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CABLE CONNECTION OF MOTOR TO CONTROL PANEL

4

5

(1) D.O.L. CONNECTION

7 LEAD CABLE OR 4+4 LEAD CABLE 

R, Y, B 

:  Power Lead 

:  Moisture Lead 

T1, T2 

:  Thermistor Lead 

:  Earthing Lead 

L1, L2, L3  :  Incoming Supply

(2) STAR-DELTA CONNECTION

10 LEAD CABLE OR 

4+4+4 LEAD CABLE 

A1, B1, C1  :  Power Lead 

A2, B2, C2  :  Power Lead 

:  Moisture Lead 

T1, T2 

:  Thermistor Lead 

:  Earthing Lead 

L1, L2, L3  :  Incoming Supply

(3) A.T.S. CONNECTION

4 CORE POWER CABLE & 

4 CORE CONTROL CABLE 

R, Y, B 

:  Power Lead 

:  Moisture Lead 

T1, T2 

:  Thermistor Lead 

:  Earthing Lead 

L1, L2, L3  :  Incoming Supply

(4) A.T.S. CONNECTION 

2 PARALLEL POWER CABLE

4 CORE POWER CABLE & 

4 CORE CONTROL CABLE 

R, Y, B 

:  Power Lead 

:  Moisture Lead 

T1, T2 

:  Thermistor Lead 

:  Earthing Lead 

L1, L2, L3  :  Incoming Supply

Ni-Hard Submersible Pump

Ni-Hard Submersible Pump

© 2018 mbh pumps (gujarat) pvt. ltd.

© 2018 mbh pumps (gujarat) pvt. ltd.

 MAINTENANCE

Practically ‘MBH’ Ni-hard submersible pumpset is totally maintenance free. However 

oil in seal chamber has to be checked every six months and needs to be replaced  

if quality gets deteriorated or it is to be changed after one year or 5000 working hrs. 

whichever is early. List of standard oil types is as under.

u

  BPCL - Hydrol 46 / Turbol 46  

u

  HPCL - Hylube-30 / Milcy-40  

u

  IOC - Servo super 10

 WARNING

•  Ensure that pump set rotates in the correct direction of rotation.
•  Always operate pumpset with the original control panel supplied by the manufacturer.
•  Never bypass any protection like Thermistor, Moisture sensor & Level controller.
  In case the pump set stops due to above protection, remove the pump set from sump  

  and correct the defect.
•  Protect the cable from damage.
•  Ensure proper earthing of the pump set before starting.

  PROCEDURE OF OIL CHANGE

Position the pump horizontally as shown in Fig.
Place a suitable receptable under the threaded 

plug. Remove the plugs with ‘O’ ring and drain 

the oil. If the oil is between light yellow and white 

in colour this means the seal is intact and the 

oil change can proceed. However, if there is 

more water than oil in the chamber you must 

inspect the mechanical seals and fit new ones 

if necessary Screw the threaded plugs, with ‘O’ 

ring back in.

  CORRECT INSTALLATION

•  A good water to slurry ratio.
•  Sump level control - If the sump empties, 

  the pump should switch itself off via the 

  automatic control panel. The pump will 

  switch  on  via  a  float  switch  or  timer  when 

  the level rises.
•  Pump should not exceed 20 starts per hour.
•  The pump should be suspended by chains at  

  least 200 mm from base of the sump to  

  ensure maximum concentration of solids  

 pumped.

Summary of Contents for Ni-HARD Series

Page 1: ...Ni HARD SUBMERSIBLE PUMP Instruction Installation Operation and Maintenance Manual A Mark of Quality A Mark of Quality 2018 mbh pumps gujarat pvt ltd ISO 9001 Certified Company ...

Page 2: ...able installation it results in increased friction losses Use the shortest possible delivery line 6 Protect cable from damage during storage transportation and operation A damaged cable may give shock or burn the motor 7 Always earth the unit before starting 8 Never hoist the pumpset up or down by the connecting cable 9 Use NRV if pipe length is more than 4 5 mtrs PRECAUTION FOR LONG STORAGE Clean...

Page 3: ...Hydrol 46 Turbol 46 u HPCL Hylube 30 Milcy 40 u IOC Servo super 10 WARNING Ensure that pump set rotates in the correct direction of rotation Always operate pumpset with the original control panel supplied by the manufacturer Never bypass any protection like Thermistor Moisture sensor Level controller In case the pump set stops due to above protection remove the pump set from sump and correct the d...

Page 4: ...th reference to duty point correctness of submergence Defective Ammeter Replace with new one The insulation resistance of the winding is inadequate The minimum resistance in warm condition during operation should be 1000 ohms volt of operating volt Please consult our works Defective radial bearing in the motor Please consult our works Vibration caused by improper installation Correct the installat...

Page 5: ...il marketing mbhpumps com exports mbhpumps com Website www mbhpumps com marg 08 2018 ISO 9001 Certified Company A Mark of Quality A Mark of Quality POLDER PUMP HORIZONTAL SPLIT CASING PUMP SUBMERSIBLE SEWAGE PUMP CENTRIFUGAL BACKPULL OUT PUMP PORTABLE SUBMERSIBLE PUMP SUBMERGED CENTRIFUGAL PUMP This is the property of ...

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