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End Suction Centrifugal
6.6.2 ELECTRICAL MAINTENANCE
Any work on the motor must be carried out with the appliance switched off and after disconnecting the
mains power supply.
- Check on a regular basis that the requirements regarding installation and electrical connections are
complied with.
- It is recommended that bearings are replaced after three years.
7. OPERATION
7.1
BEFORE STARTING THE PUMP
1. Make sure that the pipes are flushed after the installation is completed, since any impurities may lead
to faults, noise and excess wear around the mechanical closure and the other parts of the pump.
2. Check that the pump turns easily by spinning the shaft with your hand. If the movement is stiff or
irregular, check the pump because the mechanical closure may be damaged, the gasket too tight or
there might even be rust inside the pump.
3. Check the operating details of the motor, which are listed on the nameplate.
4. Do not operate the pump before priming it first. If the system is in suction mode, the pump and the
suction pipe must be filled with water via the relevant device duly installed on the delivery pipe. If the
suction is primed, the pump must be filled with water by opening the suction and delivery valves. Make
sure that no air remains inside the pump, to do this, you need to rotate the shaft by hand.
5. Check the direction of rotation of the motor, as shown below:
- Close the delivery and suction valves.
- Switch on the motor for 1 or 2 seconds, then stop it.
- Visually check that the direction of rotation is correct via the connection or the fan on the
motor. The direction of rotation is indicated by an arrow on the pump body. Generally, it is
clockwise (to the right) when the observer is facing the fan on the motor.
- After removing the coupling guard, put it back immediately after checking the rotation.
EBARA
PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005
(f) 803.327.5097
GS Series
12
rev. 03/22
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