Water Level And Low Water Safety Control Procedures; Feedwater Pump Test - FULTON RB Series Installation, Operation And Maintenance Manual

Fulton Ltd
4.4

WATER LEVEL AND LOW WATER SAFETY CONTROL PROCEDURES

The following procedures ensure the correct functioning of the water level controls and the low
water safety controls.
4.4.1

FEEDWATER PUMP TEST

a) If the boiler is not firing and not under steam pressure, lower the water level using the main
blowdown valve:
If the pump is running:
1. Observe the water level in the water level gauge (sight glass).
2. Verify that the pump continues to run until the Pump Off level is reached and then switches
off.
If the pump is not running:
1. Check that the water level in the water level gauge is between
Pump On and Pump Off levels.
2. Lower the water level by opening the main boiler blowdown valve.
3. Verify that the pump starts to run when the water level reaches the Pump On level.
4. Close the main boiler blowdown valve.
5. Continue to observe the water level in the water level gauge and verify that the pump
continues to run until the Pump Off level is reached and then switches off.
b) If the boiler is firing and under load, lower the water level by evaporation, observing a
pump cycle:
If the pump is running:
1. Observe the water level in the water level gauge.
2. Verify that the pump continues to run until the Pump Off level is reached and then switches
off.
If the pump is not running:
1. Check that the water level in the water level gauge is between Pump On and Pump Off
levels.
2. The water level will lower through natural evaporation.
3. Verify that the pump starts to run when the water level reaches the Pump On level.
4. Continue to observe the water level in the water level gauge and verify that the pump
continues to run until the Pump Off level is reached and then switches off.
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