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- 17 - 

EBARA 

Corporation 

 

2.Accessory

 

(1)Nameplate for ground installation 

  : 1 

(2)Discharge pipe 

  : 1 set 

Pump might be performed design change for improvement without prior notice 

 

 

Note

 

Drawings indicating the materials of individual parts are available from EBARA   

 

10  Disassembly and Reassembly 

 

Refer to the cross sectional drawing. 

1. Disassembly 

(1) Unscrew and remove the bolts (120-2),and lift up the motor part. Then lay it down carefully..   

(2) Unscrew and remove the impeller bolt (275), Pull the impeller (021) out. 

(3) Unscrew and remove the oil plug (193), Withdraw oil 

(4)  Unscrew  and  remove  the  bolts  (120-1),  and  remove  the  mechanical  seal  cover  (016)  carefully. 

(Care for flowing out oil remainder.) 

(5) Detach the mechanical seal with care lest the seal surfaces and shaft should be hurt. 

2. Reassembly 

Perform reassembly in a reverse order. Then exchange gasket, seal washer, o-ring for new ones.   

(Note 1) Screw adhesive (LOCKTITE #638) shall be applied to bolt (120-1) to prevent loosening, after 

degreasing a screw hole and screw part of bolts enough. 

(Note 2) After reassembly procedure (2), turn the impeller by hand to check that it rotates smoothly. 

When the rotating condition is not smooth, do over again according to the procedure (3) to (5).   

(Note 3) Apply the adhesive (LOCKTITE #262) to the impeller bolt in the following way for looseness 

prevention. 

1) Install the motor so that the shaft end serves as facing up from the level a little. After degreasing 

a screw hole enough, pour out the adhesive (LOCKTITE #262) until it is full of a screw hole. 

2)  An impeller bolt (275) should also degrease enough and should apply the adhesives 

(LOCKTITE #262) for screws to the whole screw part. 

(Note 4) After reassembly is completed, turn the impeller by hand through suction inlet to check that 

it rotates smoothly without rubbing against wearing ring. 

 

 

11  Limited Warranty     

EBARA warrants to the original retail purchaser (

“Customer”) the followings. 

 

(1)  During the warranty period, EBARA will repair the pump free of charge provided that: 

the trouble is due to shortcomings in design, workmanship, etc., that can be attributed to EBARA, 

and that the pump was being operated correctly and in a normal manner in accordance with the 

Instruction Manual when the trouble occurred. 

EBARA  takes  full  responsibility  to  repair  the  pump  including  parts  necessary  for  replacement, 

however, EBARA do not take any other damages caused by the trouble. 

(2)  Fees will be charged for repair and consumable items in the following circumstances: 

(a)  If the trouble occurs after the warranty has expired. 

(b)  If the trouble is caused by mal-operation, and/or caused during storage. 

Содержание DML

Страница 1: ...tenance and inspection of the pump Contents page page 1 Warning indication 2 7 Maintenance 12 2 Precautions of safety 3 1 Daily inspection 12 3 Introduction 5 2 Regular inspection 12 1 Confirmation of pump and accessories 5 3 Precautions during stop operation 13 2 Confirmation of nameplate 5 4 When motor protection activated 13 4 Product specification 6 5 Consumables 13 5 Installation 7 8 Troubles...

Страница 2: ...y the contents shall be observed in any case Description of the indication Terms of warning Description Warning Wrong handling expects to raise a danger resulting in death or serious injury of the operator Caution Wrong handling expects to raise a danger resulting in slight injury of the operator or sole physical damage Note Providing specific precautions or specifically emphasizing information De...

Страница 3: ... Disassembling repairing and modifying the pump shall be limited to a repair technician There is a possibility of injury caused by electric shock ignition abnormal functioning trouble etc Before entering inspection and repair cut OFF a power source at a main disconnect device which is equipped with an operating handle which is lockable in OFF position There is a possibility of electric shock and o...

Страница 4: ...current or by leakage of enclosed liquid from mechanical seal Do not use the pump at an important facility computer cooling apparatus cooling apparatus for refrigerator etc Since machining oil rubber releasing agent and foreign matter used in pump production line enter the handling liquid operation of the pump shall be done after fully flushing the pump to confirm the absence of foreign matter dep...

Страница 5: ...te Specifically care shall be paid on the frequency 50 Hz or 60 Hz Caution Do not operate a pump of 50Hz at 60Hz The operation at wrong frequency induces pump break caused by excess pressure and motor burn out caused by overload Do not operate a pump of 60Hz at 50Hz The pump performance deteriorates Fig 1 Name plate Name plate description Model of motor Pump name Capacity Unit L min Number of phas...

Страница 6: ...ll be done after fully flushing the pump to confirm the absence of foreign matter depending on the facility Limit the handling liquid to water Do not handle oil seawater organic solvent etc other than water These liquids cause trouble of pump to result in electric leak and electric shock The pump is a submersible sewage pump Do not operate the pump for a long period of time or under vigorous start...

Страница 7: ... immersed in water If the insulation resistance at the respective sections is 20MΩ or more there is no problem During the measurement keep the power source connection section of cables distant from the ground 2 Installation Warning On handling and installation work of the pump assure safety by confirming the mass and the shape of the pump referring to the appearance this instruction manual drawing...

Страница 8: ...automatic operating system as shown in Fig 3 Water levels H1 and H2 are shown in the following table 8 When using electrodes for automatic operating system incorrect actuation may occur caused by scum and oil attached on the electrodes Frequency 2 2kW 3 7kW 5 5kW 7 5kW 11kW 15kW 22kW DML 50Hz H2 mm 547 627 724 724 778 778 841 H1 mm 279 279 310 310 329 329 342 DML 60Hz H2 mm 547 627 707 707 771 771...

Страница 9: ...evice also needs to be provided in the final installation It is recommended to use a circuit breaker as main breaker that is suitable for isolation according to appropriate legal standard EN60947 2 and is equipped with an operating handle which is lockable in OFF position and complies with the other requirements of appropriate legal standard EN60204 1 clause 5 3 Caution Assure the tightening of co...

Страница 10: ...ely conducted conforming to the Technology Standard of Electric Facilities b For the cases of long cable or other situations the ground fault breaker is actuated in spite of fully grounding of motor checked by a megger The phenomenon occurs from an electrostatic capacity between the cable and the ground Specifically a rush current at start of pump likely induces the actuation of the ground fault b...

Страница 11: ...peated the pump life becomes short Once the Auto cut is actuated the motor does not start until it is cooled Even during the period of Auto cut functioning the power is supplied up to the pump Since the pump will restart without indication the inspection shall be given after cut OFF the power source 3 Operate the pump within the range given in the chart 4 Frequent start stop operations damage the ...

Страница 12: ...ts are used they may lead to serious failures of water leak seizing and break of pump parts For regular inspection parts replacement and related works request the matter to the supplier or EBARA If inspection of pressure discharge rate voltage current etc finds any difference from those of normal state the phenomenon is a sign of accident Therefore it is important to give quick action to the matte...

Страница 13: ... it at a dry site temperature of storage 5 40 C On reusing the pump follow the instructions of 5 Installation and 6 Operation 4 When motor protection is activated Check causes that motor protection is activated After removing the causes start the operation again 5 Consumables 1 Replace the parts when they enter the following described condition Consumable parts Mechanical seal Sheet packing Seal w...

Страница 14: ...e the bearing Repair or replace the mechanical seal The pump can be operated but it stops after a while Prolonged dry operation induced the functioning of Auto cut High liquid temperature induced the functioning of Auto cut Raise the water level Lower the water level Thermal protector is actuated High liquid temperature Long dry operation Eddy current Lower the liquid temperature Raise the stoppin...

Страница 15: ...nspect the connection section and the magnet switch Check the nameplate Establish the correct rotational direction refer to 6 2 2 Narrow the opening of the gate valve If no gate valve is used replace the pump with the one having lower head Disassemble the pump to remove the foreign matter Repair or replace the bearing Pump vibrates generating large noise Pump is in reverse rotational direction Pum...

Страница 16: ... 801 ROTOR 1 275 IMPELLER BOLT 1 211 AIR VENT VALVE 1 193 OIL PLUG 1 174 DISCHARGE PIPE 1 135 WASHER 1 135 2 WASHER 4 135 1 WASHER 1 120 7 BOLT 4 120 6 BOLT 3 120 5 BOLT 2 120 4 BOLT 4or6 120 3 BOLT 4 120 2 BOLT 8 120 1 BOLT 4 117 2 SEAL WASHER 1 117 1 FLANGE GASKET 1 115 4 O RING 1 115 3 O RING 1 115 2 O RING 1 115 1 O RING 1 111 MECHANICAL SEAL 1 107 WEARING RING 1 080 BUSHING 1 039 KEY 1 021 IM...

Страница 17: ...rocedure 3 to 5 Note 3 Apply the adhesive LOCKTITE 262 to the impeller bolt in the following way for looseness prevention 1 Install the motor so that the shaft end serves as facing up from the level a little After degreasing a screw hole enough pour out the adhesive LOCKTITE 262 until it is full of a screw hole 2 An impeller bolt 275 should also degrease enough and should apply the adhesives LOCKT...

Страница 18: ...t addresses are listed at the end of this Instruction Manual with the information about the description given on the nameplate and the condition of the failure abnormality Note Packing materials after installation and wasted lubricant oil and grease and parts after inspection and repair shall be transferred to a qualified waste treatment contractor observing the applicable laws and the regional re...

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