Start And Operation; Maintenance; Draining - EBARA TH Series Operating Instructions, Installation & Maintenance Manual

Operating, Installation, and Maintenance

Start and Operation

STARTING – Please follow below procedure to start pump,
1. Check if the pump-motor assembly is aligned and securely fastened to the baseplate.
2. Check the piping is free of leakage, especially the suction piping.
3. Connect and run auxiliary pipelines and connections, if any.
4. Place the coupling guard and secure it to the baseplate.
5. Prime the pump. Remove the plug from the top of the casing. Fill with water or pumped liquid
through the hole. Place the plug back in place.
Note: Priming can also be performed using a vacuum system or directly when it is a positive
suction installation.
6. Check the rotation direction of the driver with a quick start. If the rotation direction is wrong, invert
the electric motor connection.
7. Close discharge valve and open suction valve, if any.
8. Start the driver.
9. Slowly open discharge valve. Check motor current. Motor power should not exceed nominal value.
Note: It is recommended, especially for single-phase small drivers, to check if the rotating
assembly is turning freely before starting the motor, to prevent unnecessary loads and
premature failure.
OPERATION – When the pump is up to operating speed, open the discharge valve to obtain desired
capacity or pressure. WARNING! DO NOT OPERATE FOR PROLONGED PERIODS OF TIME
WITHOUT FLOW THROUGH THE PUMP. THIS CAN RESULT IN DAMAGE TO THE MOTOR AND
PUMP. If there is a power failure, turn the power switch off. Otherwise the pump may start-up suddenly
when the power supply is resumed, exposing personnel to possible danger. When the pump is not in use
for prolonged periods, such as wintertime, drain all fluid from the pump to prevent freezing damage.

Maintenance

SERVICE - Keep ventilation openings clear of extraneous objects which may hinder free flow of air
through motor. Motor bearings are lubricated during manufacture. Additional lubrication is not required
during their normal lifetime.

Draining

The pump and piping should always be protected against freezing temperatures. If there is any
danger of freezing, the unit should be drained. To drain the pump, remove the drain plug at the
bottom of the volute, and remove the priming plug to vent the pump. Drain all piping.
Rev 10/2018
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WARNING
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