EBARA CVU - Manual (Page 4)

EBARA Submersible Sewage Pumps DVU
Operating, Installation, and Maintenance
EBARA Fluid Handling
www.pumpsebara.com 4
(t) 803 327-5005 • (f) 803 327-5097 rev. 08/10
Installation
1. Check the following before beginning installation:
Insulation resistance measurement:
(1) For three phase motor:
With the motor and cable (excluding the power supply connections) immersed in water, use a meggar to measure the
insulation resistance between, the ground wire and each phase of the motor.
(2) For single phase motor: Use a megger to measure the insulation resistance between each wire and grounding wire
Pump Checks
1. Check the following points upon receipt of
your pump:
(1) Check the name plate to confirm that it is the pump
ordered.
(2) Ensure that the pump voltage is the same as the power
at your location.
(3) Check oil level at oil plug.
(4) Check that all plugs and fastening bolts are properly
tightened.
(5) Check that the pump has not been damaged and the
cable glands and cables are in a satisfactory condition.
(6) Check accessories and spare parts against the packing
list.
(7) Check that the impeller turns smoothly by hand.
2. Precautions when operation is suspended:
(1) If operation is to be suspended for 30 days with the pump
immersed in water, measure the insulation resistance of the
motor.
If resistance is over 1 mega ohm, operate pump to prevent
rust from developing on moving parts. Follow the instructions
under OPERATION when pump operation is to be resumed.
(2) For dry storage, clean out pump and store in a dry place.
Follow the instructions under INSTALLATION and OPERATION
when pump operation is to be resumed.
WARNING
Before insulation resistance measurement, always disconnect the power first.
All electrical work should be performed by a qualified electrician and all national and local electrical codes must
be observed.
CAUTION
When measuring the insulation resistance with meggar for motor windings do not test overload protection.
There are two different types of overload protection. One is MOTOR PROTECTION (AUTO-CUT), that is used for up to
10HP. The pump and motor could still have power to it if AUTO-CUT is kicked out.
The other is THERMAL PROTECTION (MINIATURE THERMAL PROTECTION OR MTP) that is used for 15HP to 30HP.
A MTP cable must be installed in the control circuit.
CAUTION
Measure the insulation resistance. The value should be more than 1 mega ohm. While making the measurement, keep the
power supply cable off the ground.