Start Up The Pump; Shut Down The Pump; Checks To Be Made While The Pump Is Running - Boulton Pumps ESK Series Instruction For Operation And Maintenance

2.4.1.4. Checking the direction of rotation
ESK type pumps rotate in clockwise when it is looked from coupling to the pump. This direction is already indicated on
the pump nameplate by an arrow. Check this by switching the pump on, then off again immediately. Fit the coupling
guard back in place if you took it out.

2.4.2. Start Up the Pump


Check if the shut off valve in the suction line is open and the shut off valve in discharge line is closed.

Switch on the circuit breaker and run the motor.

Wait until the motor reaches the full speed (on star-delta running motors wait until it switches on delta).

Open the discharge valve slowly while watching the ampermeter on the control panel (if the discharge line is empty
do not turn on the valve fully open on first start up. Turn it on slowly to maintain the value on the ampermeter is
under the rated current value of the motor).

When the valve is if fully open, check the pressure on the manometer and see it is the same with the duty point
pressure. If the pressure on the pressure gauge is lower than duty point pressure brings them to the duty point value
by slightly closing the valve. If it is higher value, check your installation, particularly head again.
The pump should be shut down at once and the trouble should be corrected if the pump is running at
it rated speed and found any of the following faults:
- Pump doesn't deliver any liquid.
- Pump doesn't deliver enough liquid.
- Flow is going down.
- Discharge pressure is not enough.
- Driver overloaded.
- Vibration on pump.
- High noise level.
- Bearing overheating.

2.4.3. Shut Down the Pump


Slowly close the shut-off valve in the discharge line.

You may shut down the pump without closing the shut-off valve if there is a device for water hammer protection on
the discharge line or the water hammer is not a considerable level.

Switch off the driver. Ensure the pump set runs down smoothly and quietly to a standstill.

Shut off external sealing liquid supply, if supplied, to relieve stuffing box pressure.

If the set is to remain out of services for a long time close the shut-off valve in the suction pipe. Close off the auxiliary
connections. In the event of frost and/or prolonged standstill, drain the pump or otherwise protect against freezing.

2.4.4. Checks to be Made While The Pump is Running


The pump must run smoothly, quietly and free from vibration at all times.

The pump must never run dry.

Never run the pump for along period against a closed discharge valve (at zero flow).

The bearing temperature may exceed the ambient temperature by up to 50º C. But must never rise above 80º C.

The valves in the auxiliary lines must remain open while the pump is running.
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