LG型立式多级离心泵安装使用说明书
25LG3-10X4-多层建筑水泵说明书
25LG3-10X4型高层建筑多级给水泵一、产品概述：LG 型高层建筑多级给水泵，系立式单吸多级分段式离心泵，供输送常温清水及物理化学性质类似于清水的液体。
LG 系列泵为立式安装，电机轴与泵轴通过爪型连轴器联接，具有结构紧凑、噪音低、占地面积小等优点。
本司产品全部采用计算机设计和优化处理，公司拥有雄厚的技术力量、丰富的生产经验和完善的检测手段，从而保证产品质量的稳定可靠。
二、适用范围：主要应用于高层建筑供水，也可应用于厂矿、企业给排水以及低压锅炉循环用水。
三、产品特点：1、水力模型先进：效率高，性能范围广。
2、更少的运行、维修费用：采用优质机械密封，耐磨损、无泄漏、使用寿命长，故障率低，具有更少的运行维修费用。
3、独特部件、降低噪音：独特的水力部件设计，良好的过流性能，最大地减少流动噪音。
4、立式结构，占地面积小。
四、技术参数：流量：3.0-50m3/h；扬程：20-150m；功率：0.75-30kw；转速：2900r/min；口径：φ25-φ80；温度范围：0-+80℃；工作压力：≤1.2Mpa。
25LG3-10*4 立式多级离心泵（简称：LG多级泵），系立式单吸多级分段式离心泵，供输送常温清水及物理化学性质类似于清水的液体。
LG系列泵为立式安装，电机轴与泵轴通过爪型联轴器联接，具有结构紧凑、噪音低、占地面积小的优点，主要应用于高层建筑供水，也可应用厂矿，企业给水排水以及低压锅炉循环用水.25LG3-10*4 立式多级离心泵结构说明25LG3-10*4 立式多级离心泵为立式结构，其吸入口位于泵座上，吐出口位于后段上，呈180°水平方向布置，根据需要，吸入口和吐出口也可以呈0°90°270°布置，可根据扬程的需要选择水泵的级数。
（见泵外形安装尺寸图）25LG3-10*4 立式多级离心泵的主要零件有：泵座、中段、后段、叶轮、导叶套、导叶、后导叶、支座、电机座、轴、轴承、轴套、密封环、平衡鼓、平衡鼓套等。
LG、LG-B立式多级泵安装使用说明书
LG、LG-B立式多级泵安装使用说明书LG、LG-B立式多级泵安装使用说明书1、安装前应检查有无杂质在泵的流道内。
2、LG、LG-B型立式多级泵安装位置应尽可能靠近水源处。
3、LG、LG-B型立式多级泵与底座安装有两种方式，一种直接装在水泥基础上的刚性连接，另一种是采用JGD型减振器安装的柔性连接，具体方法见安装示意图所示。
4、直接安装中将泵放在基础上垫高30~40毫米(准备充填水泥浆之用)，然后进行校正，并穿好地脚螺栓，充填水泥砂浆，经3~5开水泥干涸后，重新校正，待水泥完全干涸后，拧紧地脚螺栓的螺母。
5、安装管路时，进、出水管路都应有各自的支承，不应使LG、LG-B型立式多级泵的法兰承受过大的管路重量。
6、LG、LG-B型立式多级泵用于有吸程场合，进水管端应装有底阀，并且进口管路不应有过多弯道。
同时不得有漏水、漏气现象存在7、在进口管路上最好装在过滤网，以防杂质进入叶轮内部。
滤网的有交面积应是进水管面积3~4倍，以保证液体的自由畅通。
8、为了维护和使用方便安全，在泵的进口管路上安装一只球阀和在泵出口附近安装一只压力表，并在压力表前面安装一只自位阀(防水锤)，以保证泵在额定范围内运行，确保泵的正常运行和使用寿命。
9、进口如需扩径连接，请选用偏心异径管道接头。
使用说明：一、起动1、LG、LG-B型立式多级泵用于有吸程场合，即进口为负压时，应先向进口路中进行灌水排气或用真空泵引水，使水充满整个泵和进口管路，注意进口管路必须密封，不得有漏气现象存在。
2、关闭出口管上的闸阀及压力计旋塞，以减小起动电流。
3、用手转动转子几圈，使轴承润滑并检查泵内叶轮和密封环动转有无碰擦，如转不动，不应起动，直至找出故障原因为止。
4、试起动，电机转向应和泵上的箭头指向一致，打开压力计旋塞。
5、当转子达到正常运转后，压力计显示出压力时，逐渐打开出口闸阀，调节至所需工况。
二、运转1、LG、LG-B型立式多级泵在运转时，必须注意观察仪表读数，尽量使泵在铭牌规定的流量扬程附近工作，严防大流量运行。
Webtrol 25ISB-M 9 06版立式系列增压不锈钢多级离心泵安装使用说明书
I n s t a l l a t i o n & O p e r a t i n g M a n u a lVertical Series BoosterStainless Steel Multistage Centrifugal PumpCongratulations On Your Choice In Purchasing This Webtrol PumpIts Quality is unsurpassed in material and workmanship and has been factory tested.If properly installed, it will give many years of trouble free service.25ISB-M 9/06 EditionIntroduction2 General Information and Warnings2 Specifications3 Sectional View4 Sectional View - Legend5 Parts Breakdown- Per Pump5 Pump Checks6 Installation6 Operation7 Motor Installation7 Motor Removal8 Disassembly Of Pump9 Mechanical Seal Replacement10 Replacement Of Pump Hydraulic Assembly10Caution:The V Series pumps with motor installed tend to be top heavy, care should be taken in handling and transporting to prevent damage or injury caused by the pump falling over.Caution:Be careful not to exceed the given specifications in the use of your products.Liquid Handled:Type of Liquid Clean WaterTemperature5° to +248°F (-15° to 120°C)Working pressure 230/360 PSI (16/25 Bar)Construction:Impeller Closed Centrifugal SealMechanical Shaft SealPump Bearing Sealed Ball Bearing / Tungsten Carbide Suction/DischargeANSI 250 Lb. 1 1/4” - 4 / 2” - 8 bolt flangeMaterials:See Sectional View Parts List Motor:NEMA C / TC FrameSpeed: 60 Hz, 3450 RPM (2 Poles)3H ftH mExamine the components carefully to ensure that no damage has occurred to the pump or motor during ship-ment. Report damage immediately to the shipping carrier or to your dealer. The Webtrol Vertical Series pump should remain in the shipping carton until it is ready to be installed. Do not drop or mishandle the pump prior to installation.Always check the pump label against the requirement to make sure you are installing the proper pump specified for the job.Make sure that the pump suction, marked by a sticker, is connected to the liquid source and that the discharge, similarly marked, is connected to the discharge line.Caution:On three phase motor installations, always check for proper motor rotation prior to starting by jogging the motor. Shaft rotation must turn clockwise when viewed from back of the motor.Make sure the motor is correctly wired, refer to instructions on motor name plate.Make sure that the pump base is firmly secured to a solid flat surface and that the suction and discharge lines are aligned and properly supported to prevent pipe strain on the pump.where necessary.Using a funnel, fill the pump body with water until it overflows and replace plug.Alternatively for installations with positive suction heads, close the discharge valve and remove the vent plug. Open the suction valve until liquid flows out the vent plug opening and then replace the vent plug securely and open discharge valve.Caution:Extreme caution should be used if priming the pump in this manner in a hot water application. Replace the coupling guards if previously removed.Warning:Operating the pump without the coupling guards in place can cause physical injury.It is recommended that a bleed valve be installed in the discharge line, or in a line from the vent port to the reservoir. This will allow the pressure in the pump to be relieved for service.Installing a bleed valve is especially necessary in hot water application to prevent injury.Pipe, valves and fittings must have a pressure rating equal to or greater than the maximum system pressure.A bypass or pressure relief valve should be installed in the discharge line if there is any possibility the pump may operate against a closed valve in the discharge line.Minimum flow is required for proper cooling and lubrication of the pump without which, damage and premature failure will occur.3. Position the motor, shaft down, about 1” above the pump assembly. Check the motor for balance and align-ment.4. Ensure that the motor key has been placed firmly into the motor shaft keyway.5. Align the motor key and keyway with the coupling keyway and slowly lower the motor into position ensuring that the key slides into the coupling keyway.6. Prior to lowering the motor completely, rotate the motor so that the mounting holes are aligned with the corre-sponding holes in the pump bracket. After alignment, lower the motor onto the pump head.7. Insert the four motor bolts with lock washers and tighten evenly using an alternating criss cross pattern. Tighten the set screws in the coupling.8. Replace the coupling protection guards.Installation procedures for the following pump models:V10B2S - V10B7S, V20B2S - V20B7S, V40B2S - V40B3S1. Make sure the motor protection guard is removed from the pump end.2. Carefully loosen the screws on the coupling and place motor key in the motor shaft keyway.3. Position the motor vertically over the pump with the keyways lined up on the motor shaft and coupling. Then lower the motor into place.4. With the motor positioned over the pump and the motor shaft correctly inserted in the coupling, rotate the motor so that the mounting bolt holes line up with the corresponding holes in the motor bracket. Insert the mounting bolts with lockwashers and firmly tighten using a criss crossing pattern.Warning:When lifting the pump, use appropriate crane (or hoist), check position and tightness of lift system so that weight of the pump is not unbalanced.Failure to observe this precaution can result in serious accidents.1. Remove the motor as detailed in (Motor Removal) section.2. Isolate the pump by closing the suction inlet and discharge valves.3. Carefully relieve the pressure in the pump by opening the vent or drain plugs.4. Remove the vent plug5. Remove the coupling guards with a Phillips head screwdriver.6. Using an Allen wrench (a T-handle is recommended) loosen and remove the pump coupling bolts and remove the lower coupling section.7. Using 900 snap ring pliers, engage coupling snap ring and lift up to clear end of the pump shaft.8. Loosen and remove the four tie rods.9. Rotate the tie rods counter clockwise to loosen from pump base and remove. This will allow the solid coupling to clear the end of the shaft.10. Gently tap the base of the motor bracket with a soft mallet to loosen the fit on the pump assembly.11. Turn the solid coupling half so that it is aligned with the vent pipe.12. Lift the motor bracket off of the pump assembly by tilting the bracket towards the vent pipe and lifting.13. Remove and retain the pump shaft key.14. Remove the seal plate (casing cover) vertically off of the pump shaft assembly.Caution:Extreme caution should be exercised in this operation since the pump is under system pressure at this point. Use a pressure bleed valve in hot water applications where water temperature could cause physical injury.Pump BaseMechanical Seal Replacement1. Complete disassembly of pump as detailed in previous section.2. Remove the old rotating seal assembly by lifting vertically off the pump shaft. The rotating assembly is rubber boot mounted.3. Press the old stationary seal assembly out of the seal plate from the outside of the seal plate. The stationary seat is rubber cup mounted.4. Place the rotating seal assembly retainer onto the shaft taking care not to scratch or touch the seal face. If touching the seal face in necessary, gently wipe with a clean soft tissue.5. Carefully place the rotating seal assembly onto the shaft using a non-metallic sleeve to push the assembly into place on the shaft, seating the rubber boot snugly.6. Using a non-metallic sleeve, press the stationary seal assembly into the seal plate evenly, seating the rubber boot snugly.7. Reassemble the pump as instructed in (Replacement of Pump Hydraulic Assembly) section.Replacement Of Pump Hydraulic Assembly1. Remove the old mechanical seal assembly, refer to “Disassembly of Pump for Mechanical Seal Replacement”.2. Remove the pump body from the pump casing and remove the o-ring located in the pump casing.3. Ensure that the proper replacement hydraulic (stack) assembly has been selected and provided for the appli-cable pump size.4. Lift the replacement hydraulic (stack) assembly and place it onto the pump casing ensuring that it is firmly seated. Ensure that the pump shaft keyway is aligned vertically with the drain connection on the pump casing for ease of later assembly completion.5. Using a new lower pump body o-ring, apply a light film of silicone grease to the o-ring and place it over the hydraulic assembly and into the pump casing ensuring that it is seated.6. Place the pump body onto the entire assembly and align it with the o-ring installed into the pump casing.7. Using new upper pump body lower o-ring, apply a light film of silicone grease to the o-ring and place it into the o-ring groove on the upper pump body ensuring that it is seated.8. Replace the rotating mechanical seal and seal assembly. Refer to “Mechanical Seal Replacement”9. Replace the stationary mechanical seal Assembly. Refer to “Mechanical Seal Replacement”10. Carefully place the seal plate over the pump shaft Be sure the seal face is not damaged during assembly (cracked, scratched, or chipped) or the seal will leak. Ensure that the vent pipe is vertically aligned with the drain connection of the pump casing.11. Install the pump shaft key into the keyway.12. Place the motor bracket onto the pump seal cover by tilting the assembly over the vent pipe. The solid cou-pling half must be turned toward the vent pipe to ensure that the pump shaft hey will slide into the coupling key-way. The motor bracket should fit snugly onto the stationary seal assembly.13. Replace four tie rods, threading them into the pump mounting base.14. Replace the tie rod washers and nuts onto the tie rods finger tight.15. Commence staggered tightening of the tie rod nuts to ensure even distribution of pressure and proper seat-ing of the seal cover plate onto pump body. Tighten all nuts to fit snugly.16. Place handle of soft mallet, or similar lever, into the pump suction so that the entire shaft may be raised slightly until the snap ring groove is above the lower lip of the pump coupling.17. With the pump shaft assembly lifted slightly, replace the pump shaft snap ring or until seated into the groove at the end of the shaft. This will lock the pump shaft into the coupling.18. Replace the lower coupling half and insert coupling bolts tightening them firmly. Ensure that coupling bolts are tightened evenly.19. Replace coupling guards and fasten with coupling guard screws tightening them evenly.20. Reinstall vent pipe plug.21. For reassembly of motor, refer to “Motor Installation”.We at Webtrol are constantly working on new products to make your job easier, while making your systems more efficient, reliable and affordable.Your opinion means a lot to us, so please let us know what you think about our Vertical Series Pump.Weber Industries, Inc. / Manufacturers of Webtrol Products8417 New Hampshire Ave. / St. Louis, MO 63123Phone:(314) 631-9200 Fax:(314) 631-3738 E-mail:********************。
离心式水泵的安装和使用
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通用安装使用说明书
◇1概述1.1概述本安装使用说明书包括深蓝泵业有限公司EAP（9、G、K、N、D、M、L、X）、ANS（Z、G）、XL、ZX、ESH、ESHK、EHG、SCS、DCS、EDS、HDD、L YA、LG、LC、LDB、HZW、PP系列产品的所有安装、试车、使用和维修的基本知识，具体各个规格产品的结构特点、使用参数、拆卸、安装见其专用安装使用说明书。
所有维修工程师和现场服务的全体专职人员在安装和试车前必须阅读本手册并且经常使用它。
订购备件及其它相关问题，请注意泵参数牌上标明的大连深蓝泵业产品的系列号、泵规格以及出厂编号。
版权属于大连深蓝泵业有限公司。
1.2质量保证产品质量保证依据定货合同执行。
1.3安全规则1.3.1使用手册的指示标志- 不注意安全规则会导致人员危险而表示的危险符号：- 电压警惕符号：- 需要注意而没注意从而导致的机械故障或运行故障的安全规则符号：注意- 直接在装置上的指示符号，如：旋转方向箭头、泵名牌、接口说明符号等，为了使用方便，要保持这些标志的完整、清晰。
1.3.2人员的资格和培训服务、维修、检查和安装的全体人员必须具有从事这种工作的资格。
每个人的责任、权限和检测范围必须固定和清楚。
如果没有一定的相关知识，可经过厂家进行必要的培训和教导。
对于使用者，还需要完全理解生产商提供的操作手册。
1.3.3安全操作说明- 泵只有在数据单中所规定的范围内运行，才能保证其正常工作。
在任何情况下，都不要超过数据单中提供的数据极限值。
- 如果辅助装置（如冷却装置、最小流量装置、润滑装置、密封冲洗装置）发生故障，会导致泵电压增高、密封失效，轴承温升增加等现象发生。
因而确保泵的辅助装置运转正常。
- 若泵零件温度很高或很低以至于会对人员造成伤害时，应采取防护措施，避免接触。
- 为防止停车时回流现象出现，必须安装止回流装置。
- 运行前必须检查安全防护装置是否可靠（如联轴器护罩）。
- 输送危险污染环境的液体要符合环境保护法。
立式多级离心泵拆卸与组装步骤
上海沈泉泵阀制造有限公司是一家专业生产，销售管道泵，排污泵，消防泵，化工泵等给排水设备的厂家，产品涉及工矿企业、农业、城市供水、石油化工、电站、船舶、冶金、高层建筑、消防供水、工业水处理和纯净水、食品、制药、锅炉、空调循环系统等行业领域。
对立式多级泵进行拆卸的目的是对该泵进行维修、检查及更换已经损坏或是快要损坏的配件。
因此除了对离心泵的日常维护外，对泵的拆卸也是必不可少的，只是拆卸不需要天天进行，频繁的拆卸也会对其他零部件造成磨损的。
但是关于立式多级离心泵拆卸与组装步骤却是有很多的用户不会，为此，上海沈泉管道离心泵厂就为大级整理出了如下内容，以下内容仅供参考。
立式多级离心泵拆卸顺序是：拆除电机，拆除电机支架，拆除泵联器，拆除密封压盖，拆除填料或机封，拆除平衡水管，拆除紧固拉杆，拆除出水段，拆除轴套锁母，拆除滑动轴套，拆除末级叶轮，拆除平键，拆除中段，重复操作直至拆除SG叶轮为止。
组装按相反的顺序操作即可。
注：在对任何泵进行拆装操作之前，一定要关闭电源。
好了，以上内容由上海沈泉泵阀制造有限公司为大家提供，希望能够对大家有所帮助。
若在对泵的拆卸过程中出现其他问题，要及时联系厂家帮助处理。
立式多级离心式管道泵使用安装说明
立式多级离心式管道泵使用安装说明多级管道泵起动前准备1、用手拨转联轴器，叶轮应无卡磨现象，转动灵活;2、打开进口阀门，打开排气阀使液体充满整个泵腔，然后关闭排气嘴;3、如输送热液体时，起动前应预热，升温速度为50℃/h，泵的预热是用所输送液体不断循环来达到，以使各部位受热均匀;4、应先用手盘动泵几圈以使润滑水进入机械密封端面;5、点动电机，确定转向是否正确。
起动与运行1、全开进口阀门，关闭吐出管路阀门;2、接通电源，当泵达到正常转速后，再逐渐打开吐出管路上的阀门，并调节到所需工况;3、注意观察仪表读数，检查轴封泄露情况，正常时机械密封泄露为3滴/分，检查电机、轴承处温度≤75℃，如果发现异常情况，应及时处理。
停车1、逐渐关闭吐出管路阀门，切断电源;2、关闭进口阀门;3、如环境温度低于0℃，应将泵内液体放尽，以免冻裂水泵;4、如长期停用，应将泵拆卸清洗，包装保管。
立式多级管道离心泵安装说明1、安装时管路重量不不应承受在泵上，否则易损环水泵;2、泵瑟电机是整体结构，出厂时已由厂家校正，所以安装时无需调整，因此安装时十分方便;3、安装水泵前应仔细检查泵流道内有无影响水泵运行的硬质物，(如石块、铁砂等)以免水泵运行时损还过流部件;4、安装进必须拧紧地脚螺栓，且每间隔一事实上时段应对泵过行检查防止其松动，以免水泵起动时发5、为了维修方便和使用安全，在泵的进出口管路上安装一只调节阀及在泵进出口附近安装一只压力表，对于高扬程，为了防止水锤，还应在出口闸阀前安装一只止回阀以应付突然断电等失去动力事故，从而确保水泵在最佳工况下运行，增长水泵的使用寿命;6、泵用于有吸程场合，应装有底阀，并且进口管路不应有过多弯道，同时不得有漏水、漏气现象，以免影响水泵的吸入性能;7、为不使杂质进入泵内而堵塞流道影响性能，应在泵进口前面安装过滤器;8、安装管路前转动水泵的转子部件，应无磨擦声或卡死现象，否则应将泵拆开检查原因。
立式多级离心泵
5.5
2900
2.4
116 1049
427
175
4.5
1.25 130.4
47
3.40
8
6.5
1.81
120
9.5
2.64
92
53 50
4.00 4.76
5.5
2900
2.4
116 1099
477
182
4.5
1.25 146.7
47
3.83
9
6.5
1.81
135
53
9.5
2.64 103.5
50
4.50 5.36
LG-B立式多级泵
LG-B 型泵产品介绍
E-mail:eastpump@
特点
LG-B型立式多级离心泵是根据我国对高层建筑给排水及国家消防局标准开发的新一代产品，该型泵由于采用了高效节能的优秀 水力模型，因此具有效率高,性能范围广等优点，更好的满足了用户的使用要求。另外，本型泵在结构上采用了立式、分段形式， 且运转安全、平稳、寿命长、占地面积小、安装维修方便。
60
2.45
3.0
2900
2.9
120
790
257
105
63
2.80
9
2.5
64
4
12
3.33
60
18
5.0
48
55
2.85
60
3.27
4.0
2900
2.9
120
865
315
130
63
3.73
9
2.5
80
5
12
3.33
75
立式多级泵操作规程(正式)
立式多级泵操作规程(正式)
Standardize The Management Mechanism To Make The Personnel In The Organization Operate According To The Established Standards And Reach The Expected Level.
使用备注：本文档可用在日常工作场景，通过对管理机制、管理原则、管理方法以及管理机构进行设置固定的规范，从而使得组织内人员按照既定标准、规范的要求进行操作，使日常工作或活动达到预期的水平。
下载后就可自由编辑。
一、起动前准备
1、用手拨转电机，叶轮应无卡磨现象，转动灵活；
2、打开进口阀门，打开排气阀使液体充满整个泵腔，然后关闭排气阀；
3、严禁机械密封在干磨情况下工作，应先用手盘动泵联轴器几圈以使润滑水进入机械密封端面，避免突然起动造成机械密封断裂损坏。
4、点动电机，确定转向是否正确。
二、起动与运行
1、全开进口阀门，管闭吐出管路阀门；
2、接通电源，当泵达到正常转速后，再逐渐打开吐出管路上的阀门，并调节到所需工况；
3、注意观察仪表读数，检查轴封泄漏情况，正常时机械密封泄漏为3滴/分，检查电机、轴承处温升≤70℃，如果发现异常情况，应及时处理。
三、停车
1、逐渐关闭吐出管路阀门，切断电源；
2、关闭进口阀门；
3、如环境温度低于0℃，应将泵内液体放尽，以免冻裂；
4、如长期停用，应将泵拆卸清洗，包装保管。
请在这里输入公司或组织的名字
Please enter the name of the company or organization here。
立式多级离心泵的安装规范
立式多级离心泵的安装规范离心泵的安装规范,离心泵的安装规范(1)离心泵安装前的准备①仔细检查各零件有无损伤，将配合面擦拭干净，并在配合面上重新涂上防锈油。
②仔细检查基础的情况，有关经验表明，混凝土浇注的基础是很好的，如基础为混凝土结构，且以工作缝形式隔开‘，则可使来自各方的振动减小到最小值。
③准备好安装所需的各种工具和起重器械。
(2)离心泵的安装规范①壳体部分的安装在任何情况下，都不能用吸入喇叭Vl作为泵支撑或者用喇叭口作为类似用途。
将泵安装垫板置于基础预留孔内，并在垫板下塞置垫铁，通过调整垫铁，初正垫板水平。
在喇叭口法兰配合面上均匀涂上密封胶，用M30×80的螺柱将喇叭口与外接管a连接起来。
在离心泵安装垫板上放置枕木或其他支撑物，将连接好的外接管a与吸人喇叭口置于枕木或其他支撑物上。
在外接管b下法兰面上均匀涂上密封胶，用螺栓M30×140将外接管b与外接管a连接起来，把此组件置于枕木或其他支撑物上;同样把外接管C与外接管b连接起来置于枕木或其他支撑物上;对好销孔方向，把外接管d与吐出弯管用螺栓M30×140连起来，把外接管d置于枕木或其他支撑物上;支撑板用螺柱M30×85与外接管e连起来，把此组件用螺栓M30×140与外接管d连接起来置于枕木或其他支撑物上。
吊起上述已连接好的壳体，移开支撑物，将泵安装垫板配合面清理干净，并均匀涂上一周密封胶，放下泵壳体，并用地脚螺栓初步将壳体紧固在基础上。
校正泵的水平度，使垫板水平度在0.05/1000以下。
拧紧地脚螺栓，灌浆浇固泵安装垫板。
至此，泵壳部分安装完毕。
②可抽部分的安装 只有在二次灌浆层彻底凝固后才能进行可抽部分的装配。
从主轴a的叶轮端装进两轴套，依次滑过短键槽处，在每个短键槽处装上一根812×54的键，将轴套退回至键位顶住，在每个轴套三螺孔处拧上三个Ml0×化工泵12的螺钉。
将叶轮放置在一人高左右的梁架上，在主轴a下端装上一根845×270的键，在主轴a的另一端拧上M48的吊环螺钉，将主轴a吊至叶轮上方，放下主轴a，使主轴a穿过叶轮的主轴孔，在主轴a和叶轮上装上叶轮锁环，用4组M24×60的螺栓、弹簧垫圈将叶轮锁环固定在叶轮上，然后吊起组装好的部件放人叶轮室中。
立式多级离心泵安装使用说明书
立式多级离心泵安装使用说明书系列: MVA, MVS代斯米泵业技术有限公司电话: +45 96 32 81 11传真: +45 98 17 54 99邮件: ***************网站: 说明书: T1536 语言:中文版本:A1(03/20)目录1手册说明 (4)1.1前言 (4)1.2图标和符号 (4)2担保 (5)2.1 担保条款 (5)3产品 (6)3.1 产品介绍 (6)3.2 型号说明 (6)3.3 机械密封代号 (6)3.4 额定电流 (7)4安全与环境 (8)4.1通用 (8)4.2用户 (8)4.3安全措施 (8)4.4安全保护措施 (8)4.5环境方面 (9)5用途及使用范围 (10)5.1产品特点 (10)5.2用途 (10)5.3使用范围 (10)5.4工作介质 (10)6技术参数 (11)6.1环境温度 (11)6.2液体温度 (11)6.3最小进口压力的计算方法 (11)6.4压力与温度 (12)6.5电气参数 (12)6.6电机起/停次数 (12)6.7尺寸及重量 (12)6.8噪音等级 (12)7安装及使用前注意事项 (13)7.1安装时请按照以下事项操作，以免损坏泵 (13)7.2启动泵前检查 (14)7.3启动步骤 (15)8性能参数 (16)9保养 (17)10运输储存 (18)10.1运输 (18)10.2存储 (18)11故障解决 (19)12尺寸图 (21)13爆炸图 (29)1 手册说明1.1 前言本手册包含了正确、可靠和有效操作及使用产品的重要信息。
遵守操作说明对于确保产品的可靠性和较长的使用寿命以及避免任何风险都是至关重要的。
本章包含关于本手册和一般安全的信息。
以下章节提供了关于产品的正常使用、安装、维护和修理的信息。
•熟悉手册内容。
•准确地遵循指示和说明。
•按照手册，永远不要改变操作要求的顺序。
•将本手册或本手册的副本放在产品附近的固定位置，以便所有操作人员都能使用。
GDL多级管道泵使用说明书
上海沈泉泵阀制造有限公司☆ 产品简介及特点GDL型多级管道离心泵是我单位在国内外优秀泵型之基础上结合用户的使用要求及消防有关标准，并根据JB／TQ6435-92标准设计制造的新一代产品。
本型泵采用立式节段式外加不锈钢壳体结构，使得泵的进出口位于同一水平线上且口径相同，能象阀门一样安装于管路之中，它同时集中了多级泵之高压，立式泵之占地面积小及管道泵之安装方便的优点，同时由于采用了优秀的水力模型，所以还具有高效节能，运行平稳等优点，且轴封采用耐磨机械密封，无泄漏使用寿命长。
为了能更好地满足用户的要求，本单位还开发了出水口位于上部的GDLS型，其进出口可以不同的相对位置(0°、90°、180°)安装，使用极为方便。
为了使用户能更加安全、可靠的使用该型泵，本单位特别研制了便拆式结构型，它除拥有GDL、GDLS的一切优点外，更为您更换机械密封等易损件提供了更加方便，快捷、省力的途径，使本型泵更无忧运行与维护。
应用范围本型泵主要适用于高压运行系统中冷热清水的循环和增压、高层建筑多台泵并联供水、消防、锅炉给水和冷却水系统及各种冲洗液的输送等。
工作条件1．本型泵可输送清水或物理化学性质类似于清水的液体；2．液体温度：-15℃～+120℃；3．工作压力：最大工作压力<2.5MPa，即系统压力=入口压力+闭阀工作时的压力<2.5MPa；4．周围环境的温度应低于40℃，相对湿度不超过95％；5．输送含腐蚀性介质及热液体时，请于订货时提出，以便采用特殊材质满足使用要求。
☆ 型号意义☆ 结构简图1 泵体 11 联轴器 1 泵体 11联接座 1吸入段 11 联接座2 拉紧螺栓 12 联接座 2 拉紧螺栓 12密封座 2拉紧螺栓 12 密封座3 外筒 13 气嘴 3 外筒 13轴承座 3外筒 13 复合轴承4 叶轮 14 机械密封 4 叶轮 14机械密封 4叶轮 14 轴承座5 时轮挡套 15 轴 5 叶轮挡套 15轴 5叶轮挡套 15 机械密封6 轴套 16 中段 6 轴套 16中段 6密封垫 16 轴7 密封垫 17 轴套螺母 7 密封垫 17轴套螺母 7螺母 17 中段 8 螺母 18 轴瓦 8 螺母 18轴瓦8出水段 18 轴套螺母 9 销 19 回水管部件 9 联轴器 19回水管部件9联轴器 19 轴瓦 10 电机10 电机10电机☆型谱图☆ 性能曲线图25GDL2 25GDL240GDL6 50GDL1250GDL18 65GDL2480GDL36 80GDL54100GDL72 125GDL100150GDL-160☆性能参数表流量功率(KW)型号(m3/h) (L/S) 扬程(m) 效率(％)转速(r/min)轴功率电机功率 汽蚀余量(m) 进出 口径 (mm) 高度 H (m) 重量(kg)高度h1 (m)25GDL2-12×31.4 22.4 0.39 0.56 0.67 38 36 33 23 30 32 2900 0.630.650.67 1.1 1.4 1.7 1.8 25 606 58 12525GDL2-12×41.4 22.4 0.39 0.56 0.67 50 48 44 23 30 32 2900 0.830.870.90 1.1 1.4 1.7 1.8 25 646 62 16525GDL2-12×51.4 22.4 0.39 0.56 0.67 63 60 55 23 30 32 2900 1.041.091.12 1.5 1.4 1.7 1.8 25 711 68 20525GDL2-12×61.4 22.4 0.39 0.56 0.67 76 72 66 23 30 32 2900 1.261.301.35 1.5 1.4 1.7 1.8 25 751 72 245 25GDL2-12×71.4 22.4 0.39 0.56 0.67 88 84 77 23 30 32 2900 1.461.521.57 2.2 1.4 1.7 1.8 25 816 78 28525fiDL2-12×81.4 22.4 0.39 0.56 0.67 101 96 88 23 30 32 2900 1.631.741.80 2.2 1.4 1.7 1.8 25 856 82 32525GDL2-12×91.4 22.4 0.39 0.56 0.67 114 108 99 23 30 32 2900 1.891.962.02 2.2 1.4 1.7 1.8 25 896 86 36525GDL2-12×101.4 22.4 0.39 0.56 0.67 126 120 110 23 30 32 2900 2.012.172.24 3 1.4 1.7 1.8 25 981 98 40525GDL2-12×111.4 22.4 0.39 0.56 0.67 139 132 121 23 30 32 2900 2.312.392.47 3 1.4 1.7 1.8 25 1021 102 44525GDL2-12×121.4 22.40.39 0.56 0.67152 144 13223 30 3229002.522.612.7031.4 1.7 1.825106110648525GDL4-11×3 2.844.80.781.111.33363328.532404129000.860.900.911.11.41.71.825 606 58 12525GDL4-11×4 2.844.80.781.111.3348443832404129001.141.201.211.51.41.71.825 671 65 16525GDL4-11×5 2.844.80.781.111.33605547.532404129001.431.501.512.21.41.71.825 736 72 20525GDL4-11×6 2.844.80.781.111.3372665732404129001.721.801.822.21.41.71.825 776 76 24525GDL4-11×7 2.844.80.781.111.33847766.532404129002.002.102.1231.41.71.825 861 86 28525GDL4-11×8 2.844.80.781.111.3396887632404129002.292.402.4231.41.71.825 901 90 32525GDL4-11×9 2.844.80.781.111.331089985.532404129002.572.702.7331.41.71.825 941 94 36525GDL4-11×10 2.844.80.781.111.331201109532404129002.863.003.0341.41.71.825 1011 110 40525GDL4-11×11 2.844.80.781.111.33132121104.532404129003.143.303.3341.41.71.825 1051 114 44525GDL4-11×12 2.844.80.781.111.3314413211432404129003.433.603.6441.41.71.825 1091 118 48525GDL4-11×13 2.844.80.781.111.33156143123.532404129003.723.903.9441.41.71.825 1131 122525注:1: GDLS、GDL-B、GDLS-B型除重量H尺寸稍有不同外其性能参数与GDL型相同。
多级 立式 离心泵 使用说明
多级立式离心泵是一种常用的工业设备，广泛应用于供水、加压输送、供暖、空调等领域。
在使用多级立式离心泵时，需要遵守一定的操作规程和注意事项，以确保设备的安全运行和有效工作。
下面将针对多级立式离心泵的使用说明进行详细介绍。
一、设备介绍1. 多级立式离心泵是一种由进口轴承、轴封、泵体、叶轮等部件组成的泵类设备。
它具有高效节能、流量大、扬程高等特点，适用于中小型工业和民用建筑的供水和水循环系统。
2. 多级立式离心泵可根据用户的需求选择不同的材质，例如不锈钢、铸铁、铜等，以适应不同的工作环境和介质。
3. 设备采用了先进的结构设计和制造工艺，确保了设备的稳定性和可靠性。
多级立式离心泵的安装、使用、维护都比较简便。
二、操作规程1. 在启动多级立式离心泵之前，需要先检查设备的电源接线是否牢固，电机是否正常接地。
2. 启动时，应按照设备的操作说明书操作，以免因操作不当引起损坏或事故。
3. 注意监测设备的电流、电压和运行声音，确保设备的正常运行状态。
三、设备维护1. 定期检查设备的轴承、轴封、叶轮等部件的磨损情况，发现问题及时更换。
2. 维护人员应具备一定的机械和电气知识，能够及时发现和处理设备的故障。
3. 在设备不使用时，需要及时清洗泵体内部的介质并进行防腐处理，以延长设备的使用寿命。
四、安全注意事项1. 在使用多级立式离心泵时，需保持设备周围的清洁和整洁，避免进入异物影响设备的正常工作。
2. 禁止在设备运行中进行维修和保养操作，以免发生危险。
3. 正确操作设备，避免超负荷运行，以免损坏设备和降低设备的寿命。
五、环保要求1. 多级立式离心泵使用过程中，需要注意减少设备的能耗和杜绝泄漏现象。
2. 设备使用寿命结束后，应按照环保要求进行处理，避免对环境造成污染。
六、结语通过以上介绍，我们对多级立式离心泵的使用说明有了更加全面的了解。
在实际操作中，我们需要严格依照设备的说明书和操作规程来进行操作，从而确保设备的正常运行和安全工作。
Laing无密封离心式罐装电机泵快速热水循环系统安装和操作手册说明书
Please read this manual carefully before attempting to install, operate or maintain the product described. Failure to comply with the information provided in this manual could result in personal injury and/or property damage. Retain this manual for future reference.LaingSeal-less CentrifugalCanned Motor PumpsFor Instant Hot Water Recirculating Systems About LAING PumpsLaing Recirc ®pumps have only one moving part--the rotor/impeller. The motor creates an electro-magnetic field that balances and spins the rotor/impeller on a stationary bearing ball inside thepump cavity. The motor is fully encapsulated inresin, has no moving shafts or seals, and elimi-nates conventional wear that can generate noise.Like all seal-less centrifugal circulators, the pumpcannot be run without water lubricating the bearing.The pump housing must be flooded before start-upand water must be maintained in the system duringpump operation. The unique leak-proof integrationof the motor and pump housing eliminates theneed for conventional mechanical seals or othershaft sealing devices. These components are self-lubricating and require no external lubrication.WARRANTYLaing recirculation pumps are warranted against defects in materials and workmanship for 24 months from the date of manufacture (see mfg. date label on pump) or twelve (12) months from date of user purchase,with proof of purchase, whichever is later. In order to receive warranty considerations, the product must be returned prepaid to the company from which it was originally purchased. If the pump is found defective, the pump will be replaced or in the case of wholesale customers, appropriate purchase credit will be issued.Prior to returning any defective pump to Laing for warranty consideration, contact the Laing factory for an RMA tracking number. Any claim for consequential damages resulting from a pump malfunction is not covered by the Laing warranty. Additional warranty details are available on request.(1/02)SM-303-B Models:SM-303-B SMT-303-B SM-909-B-14SMT-909-B-14UC-303-B UCT-303-B SMT-303-B with 24 hour timerSM-909-B-14SMT-909-B-14with 24 hour timerUC-303-B UCT-303-B with 24hour timerAbout Recirculation SystemsAir in the System: A properly installed system should include a method of automatically venting the air that enters the water supply line during use. Air enters the system each time fresh, cold water is introduced into the hot water heater. Air may also enter the system any time a plumbing line is opened, for instance during a faucet change or adding a sprinkler system.Water Pressure: A recirculating system is a pressurized system operating at the city waterpressure, as determined by the pressure regulator on your line, or by a well pump, if you are on a well system. In most residential plumbing systems, water pressure is set at 35 psi and above.Below 35 psi, water pressure may not be sufficient to fill the pipe diameter, leaving space for air to accumulate in the lines. If your system pressure is less than 35 psi, use the next larger pump on the Pump Selection Guide.Multiple Floors: Because the system is pressurized, the number of floors in a home is not taken into consideration in sizing the circulating pump. The pump has only to produce continuous flow at a pressure sufficient to overcome the friction losses created by the piping in the house water supply line and the return line.Oversized Pumps: Pumps should not be so large as to produce flow rates that may eventually erode holes in the pipes. According to the Copper Development Association, excessive erosion occurs at a velocity of about 5 ft. per second and higher; or about 4 GPM in 1/2” Type M copper pipe; and 8 GPM in 3/4” pipe. Use the recommended recirculation line size shown in the Pump Selection Guide. Laing pumps are sized so that flow velocities are well below these limits.Pump Selection Guide: The Laing SM and UC 303 models are designed to handle the recircula-tion requirements of residences with a pipe loop (the total length of hot water supply line plus the recirculation line) up to 250 feet while the SM-909 model pump is designed to handle the circula-tion requirements of residences and small apartment complexes with pipe loop runs to 700 or 1000feet. The chart below provides a simple rule of thumb to help you match the pump to your system.Housing Codes:BS 1/2 - 1/2” Sweat BT 1/2 - 1/2” Female NPT BS 3/4 - 3/4” Sweat BF - Flanged Total Pipe Loop Recirc Line Pump Model Building Size (Supply & Return)Pipe Size SM-303, UC-303(BS 1/2” or BT 1/2”)Residential 250 ft.1/2”SM-909-B14 (BS 1/2 or BS 3/4)Residential 700 ft.1/2” or 3/4”SM-909-B-18, 909-B-26Large residential,1000 ft.3/4”(BS 3/4” or BF)hotel, apartment orcommercial buildingPump Selection GuidePump Data Model HP RPM WattVolt Phase Cycle Amps SM/SMT-303, UC/UCT-3031/1503400331151600.3SM/SMT-909-141/503400651151600.6SM/SMT-909-181/203400981151600.9SM/SMT-909-26About Plastic PipingIn many cities throughout the U.S. Polybutylene and CPVC plastic piping is approved for use in residential water systems for both hot and cold water supply lines. However , it is not clear as to the plastic pipe manufacturer’s position relative to the approved use of their pipe when there is always hot water in the hot water lines such as would be the case with a hot water recirculation system. Evidently having hot water in the lines intermittently is acceptable (timer operated pump)but not constantly. As a result Laing cannot offer any recommendations for or against the use of plastic pipe until such time as the plastic pipe manufacturers themselves establish a clear position in this regard. Check your local codes on the permissibility of plastic piping for your hot water recirculation system.Note: provide upward slope of piping from thepump to the water heater.Installation and Start Up1. Select the sink under which to connect the recirculation line (the sink where the hot water takes longest to arrive which is usually the sink farthest from the water heater).2. Plan your installation. Decide on the course of the recirculation pipe (also determin-ing the length of the pipe required) and whether the return line should be connected to the water heater cold water inlet line (tee fitting required) or to the bottom water heater drain valve (“Y” type fitting required to fit to existing drain valve outlet). See figure 1 and 2 for the installation schematic.Above diagrams are for single line returns only. For multiple branched supply line installa-tions, a recirculation line should be installed for each branch.Note: The pump must always be installed below the water level of water heater so that the pump flow is always upward or directly horizontal and not downward. Do not mount the pump above the water heater.3. Purchase materials required.• Laing Recirc® Pump (SM-303/UC-303 or SM-909)• (1) 1/2” or 3/4” swing check valve • Copper pipe or tubing• (1) 1/2” or 3/4” hose bib • Tee for under sink connect• (1) Auto air vent • Tee or “Y” fitting connection to water heater• Misc. nipples and fittings • (2) 1/2” or 3/4” shut-off valves • Pipe insulationA. Return into Cold Water Line at Top of WaterHeater fig. 1B. Return to Drain Valve at Bottom of Water Heater Shut-Off Valve (allows isolation of water in the tank in the event of pump servicing).Hose Bib (allows venting of air from system at start-up).Auto Air Vent (allows continuous venting of air bubbles that intrude into all hot water circulating systems during operation).4. Shut off the water to the house.Or, if the Rotor/Impeller cannot be removed using forefinger and thumb,carefully lever offevenly with twoscrewdrivers.5. Drain the plumbing lines by opening the faucets in the house. Drain the water heater if you plan to make the connection at the botom of the water heater, which requires removal of the drain valve.6. Connect the return line at the last faucet riser and run to the water heater. Tee the return line as close to the end of the hot water supply line as possible and run the return line back to the water heater.7. Install the pump and other components required in accordance with the diagrams provided in fig. 1 or 2 and connect the return line to the water heater (also see fig. 3).For SM(T) and UC(T) 303 ModelsCheck pump operation before youbegin. Unscrew the pump housing fromthe motor (fig. 4) and run the pumpfor a few seconds to make sure it isoperational. Remove the rotor (see fig.5) and add a little water to the bearingball for lubrication. Do not usegrease or oil to lubricate the pump.Fig. 5303-Models - Rotor/Impeller Installation: To remove the rotor unit, grasp the top of the unit and gently pull straight up. Do not pull up on one side only or push the rotor sideways. If the rotor sits too tightly, carefully lever it off with a screwdriver on each side of the rotor. When re-installing the rotor, use enough force to hear the rotor “click” on to the ceramic bearing and spin the rotor with your fingers to insure that it turns freely.For SM(T) - 909 ModelsThis unit may be installed into the pipe system without disassembling the pump.However, it is recommended that the motor section be disassembled from the pumphousing by removing the two pump housing screws so that the system may be flushed as noted in paragraph 9.Remove the Rotor/Impeller by usingforefinger and thumband pulling upward.Fig. 4Remove the motor unit and o-ring from the pump housing into the plumbing line. Do not sweat the housing into the plumbing line with the motoror o-ring attached.Arrows on thepump housingindicate the direction of water flow.Caution: Only hand tighten the screw ring. Do not overtighten! Do not use plumbers putty on the screw ring.Ultracirc ModelsThe UC and UCT-303 models incorporate a shut off valve and check valve into the brass pump housing eliminating the need to install these components.These models are supplied with 1/2” union fittings. These fittings should be removed from the pump housing before soldering to avoid damaging the internal valves.U.L. CautionThis pump has been tested using water only. Its suitability for use with liquids other thanwater is the end user’s responsibility.Incorrect InstallationDo not mount in these orientationsPump Mounting Positions fig. 3Correct Installation8. Close the shut-off valve on the inlet side of the pump and turn the water supply to the house back on.9. Flush system of debris. Before reattaching the pump motor, open the shut-off valve on the inlet side of the pump housing and let water flow through the housing. Use a bucket to catch the water. Let the water run long enough to clear all sand, solder pellets, plumb-ers tape flakes, etc. from the lines. Close the inlet shut-off valve when finished.10. Connect the pump motor to the housing. Make sure the rubber o-ring is in place in the housing and the screw ring is securely hand tightened (for 303 models) or that the top housing screws are firmly in place and tightened (909 models). Reopen the shut-off valve or valves and let the water flood the pump housing.11. Purge air from the supply line. Turn on the faucet or shower farthest from the water heater. Open the line until you get a good, steady stream of water without sputter or evidence of air.12. Purge air from the return line. Connect the pump to the electrical supply. With the pump running, open the hose bib and let water run until the pump is running quietly and there is no sputtering or other evidence of air coming from the hose bib. Close the hose bib. Your system is now in operation. Allow a few minutes for instant hot water to recircu-late to all of your faucets.SAFETY PRECAUTION: Remove the handle from the hose bib(s) to prevent a small child from mistaking it for a cold water faucet.Insulating both the hot water supply and recirculation lines is strongly recommended.13. If you have an SMT or UCT timer pump, set your timer in accordance with the instructions on the following page.Do• install an air vent mounted in a vertical position (if provided).• use 1/2” recirculation line tubing.• check to be sure there are no crimps or sharp bends in the recirculation line that would restrict the flow.• be sure the check valve is installed in the proper direction of the flow.• be sure all air is purged from the system prior to starting the pump.• use a water conditioner if you have hard water.• be sure the gate valves are open before turning on the pump.• install the pump pumping in upward direction only.Do Not• use grease or oil to lubricate the pump - it is self-lubricating.• over tighten the screw ring (SM-303 models).• install the pump with the motor above the pump housing.• install the pump pumping away from the water heater nor pumping downward.• start the pump before the system is full of water and purged of air.• allow the water heater temperature above 140ºF.• install the pump in the supply line to faucets.• use any pipe size other than 1/2” for SM-303 or UC-303 models.• position the pump at the top of the water heater.Notes:Keep The Hot Water Temperature Below 140ºF: Higher temperatures can cause calcium and magne-sium elements to come out of solution and create solids which could not only cause damage to the pump but also reduce water heater efficiency and premature failure of the water heater.Hard Water Conditions: Use a water conditioner. Hard water can cause scale build-up and eventuallyreduce the life of the pump and other system components.If timer controlled operation is desired, the timer may be programmed to allow the system to operate during the hours desired (i.e. “ON” from 7:00 a.m. to 9:00 p.m. and “OFF” from 9:00 p.m. to 7:00 a.m.)as follows:•Open the timer cover and rotate the dial clockwise until the correct time is aligned with the pointer (Ǡ) on the dial face. If the indicator cannot be located on the face of the timer, there is an additional arrow indicator (Ǡ) on the side of the timer. Be certain to choose the correct “AM” or “PM” time.•Pull all the tabs upward or outward during the timeyou want the system to operate automatically. (Pullthe tabs “upward” on Timer Version A or push thetabs outward on Timer Version B).•On Timer Version A, each tab is a 30-minuteincrement. On Timer Version B, each tab is a 15-minute increment. As an example, if the desiredtime of operation is between 7:00 a.m. and 9:00p.m., all of the tabs between 7:00 a.m. and 9:00 p.m.should be pulled upward or pushed outward.•Slide the switch bar to “timer”.The timer mode will provide the most cost effective method of operation and can be programmed to run only during the time periods when hot water is most frequently required.Version A Version BProtected by one or more of the following Patents:4580335, 4615662, 4822256, 4834628,5094593, 5143049, 5749715, 6149407, 6227235Do’s and Do Not’sTimer Controlled OperationSystem MaintenanceStandard Dry Run Thermostat OperationEach SM(T)-303 and UC(T)-303 model pump has a built-in 200ºF thermal cut-off in order to protect against overheating, which could cause damage to the pump motor. In the event that disruption of your immediate hot water supply is noticed it is possible that the pump has or is running dry and the internal dry run thermal protector has shut down the pump motor. In this event, it is important that the dry run condition be corrected (otherwise the pump will fail prematurely) by following the procedure below:1. Disconnect power to the pump motor.2. Close the shut-off valves on each side of the pump.3. Remove the pump motor/rotor assembly from the pump housing.4. Dry off the pump motor/rotor assembly. Remove the rotor and check for any calcium build-up,foreign matter or any signs of wear. If these signs are not present, put the rotor back in place on the ceramic ball.5. Hold the pump motor/rotor assembly upright and plug in the unit for about 10 seconds to see if the rotor spins evenly and quietly. If the motor does not go on, allow a few more minutes for the thermo-stat to reset as the unit cools down.6. If the rotor spins properly, unplug the motor and reinstall the assembly into the pump housing.7. Turn both shut-off valves to the on position, reconnect the electrical supply to the pump motor, and be sure that air is properly purged from your system.130ºF On-Off Thermostat Option “C”Pumps with the letter “C” in the model are provided with a factory option “C” internal thermal cut-off which automatically shuts the pump down when the temperature of the water passing through the pump housing reaches 130ºF +/- 10ºF and turns the pump on at 110ºF +/- 10ºF (SM/SMT 909-14 only).Variable Setting On-Off Thermostat Option “R”Pumps with the letter “R” in the model designation are provided with a factory installed internal thermal cut-off with an adjustable On-Off temperature dial located on the outside of the motor. This dial can be rotated by placing a thin screw driver in the dial slot which allows the pump to turn off automatically when the water temperature passing through the pump housing reaches the dial setting selected-between 95ºF and 140ºF. The pump will turn back on automatically when the water temperature cools down to 10ºF below the set temperature (SM/SMT-303 only).•Do not attempt to lubricatethe pump. The pump is self-lubricating.•Prevent the pump fromrunning dry.•Flush the system of anydebris and re-purge all airfrom the system in the eventof any water supply interrup-tions in plumbing line.•Prevent heavy scale build-upby keeping the hot watertemperature 140ºF or less.•Don’t over salt your waterconditioner.Replacement PartsPlease provide the followinginformationwhen ordering:• Model number• Serial number SM-303-B SM-909-B-14Housing “O” Ring Rotor Assembly MotorAssembly Screw Ring UC-303-B Housing “O” Ring Rotor Assembly Motor AssemblyScrew RingTrouble ShootingNoise in the System: The pump should be virtually noiseless during operation. The rotor may make a brief but hardly perceptible fluttering noise immediately after the pump is turned off. During normal operation, an occasional air bubble may pass through the pump housing causing a momentary gurgling noise. However, if noise at the pump persists for any prolonged period, correct the problem (see below).• The check valve is mistakenly installed on the inlet side of pump or in the wrong direction.• The inlet side shut-off valve is closed or clogged.• There is air is trapped in the pump housing (turn the pump on and off several times to see if the air pocket can be “bumped” out of the pump and if not, then open the hose bib for manual venting).• There is debris blocking the rotor.• The rotor bearing has worn due to dry running causing the rotor to wobble during operation.• If the return line connects to the cold water supply at the top of water heater, the warm water may be creating back pressure in the cold supply line. If so, add a check valve on the cold supply line above the return line tee connector.Pump Operating Intermittently or Not at All:• No power to the pump.• There is debris or foreign matter in the pump.• The thermostat is not functioning properly (see page 6 on thermostat operation). If wanted, the thermostat may be easily disconnected. Contact the Laing factory for details.Water Taking Too Long to Get to Faucet:• The hot water supply from the water heater is exhausted.• The faucet involved may be on a branch line off the main hot water supply line in which case there may be a slightly longer wait for hot water to arrive than atfaucets directly off the main supply line.• The check valve is installed backwards.• The pump is not operating.• The timer is not operating properly.Signs of Dry Run:Dry run results from inadequate water supply to the pump, which prevents lubrication of the bearing ball. It may be caused by operating the pump without water in the plumbing lines, which may occur with frozen pipes, or by failing to turn the pump off when thesystem is drained for servicing. It can also occur as the result of large air bubbles collect-ing in the pump housing and preventing the flow of water over the bearing ball. If the problem is air in the system, check that the air vent is functioning, that the system isproperly purged of air and that the pump and various system components are installed in accordance with the diagrams shown on page 3.Laing Thermotech, Inc.2295 Main Street, San Diego, CA 92154-4702Phone: (619) 575-7466 Fax: (619) 575-2739U L C US®。