Fulton Ancillary Equipment SteamPac Unfired Steam Generators - Manual (Page 49)

Fulton Thermal Corp.*SteamPac Unfired Steam Generators Manual* Version 2010-0201
Page 49
9. Troubleshooting
a) The following troubleshooting guide will assist in the diagnosis and correction of minor
field problems. In any case requiring additional assistance, contact your local authorized
Fulton Representative.
b) Feedwater Pump
1. Problem: Pump rotates freely but does not pump.
Check:
1. Excessive feed water temperature (normal maximum
180°F) will result in flashing at
pump inlet. This is usually caused by leaky
check valve between pump and boiler or
failure of steam traps to close tightly. Repair
or replace defective equipment at once
before causing damage to pump.
2. Obstruction in suction line. This can be determined by a
visual check or installing a
compound gauge (reading vacuum and pressure) in the
pump suction line close to the pump. An unrestricted line
will produce a pressure reading on the gauge of
approximately 1 PSIG while the pump is running. A
vacuum reading on the gauge indicates an obstruction,
which must be eliminated. Be sure to remove strainer
basket, scrub clean and reinstall.
3. Motor not up to rated speed. Check speed with
tachometer.
4. Wrong direction of rotation. Check arrow on pump
casing.
5. Broken pump shaft. Check shaft at both ends.
2. Problem: Pump vibrates or is very noisy.
Check:
1. Misalignment of pump and motor. Check coupling and
piping strain.
2. Bent or broken shaft.
3. Pump impeller binding. Check for foreign
matter in pump, bent impeller, or mineral
deposits on impeller, channel ring or spacer. If mineral