Fulton Ancillary Equipment Horizontal and Vertical Return Systems - Manual (Page 17)

RTN IOM 15
Maintenance
1. Inspect all controls for proper operation.
Lubricate all moving parts as required.
2. Clean and check water gauge glass for
presence of oil. If detected, find the
source and eliminate it.
3. Make periodic inspection of the pump
mechanical seal(s) for leakage. Replace
seal if necessary folloiwn the pump
manufacturer’s instructions.
4. Pump bearings may or may not require
lubrication depending on a particular
pump. Follow the pump manufacturer’s
instructions.
5. Clean pump strainer of debris.
6. Drain and flush tank yearly.
Troubleshooting
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.
Maintenance
Problem Check
Pump rotates freely but does not pump 1. Excessive feed water temperature (normal max. 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 product 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.
6. Pump sized too small.
Pump vibrates or is very noisy 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 deposits
occur, have the water analyzed and treated by a reliable chemical treatment
company. Remove any mineral deposits from pump parts.
4. Worn bearings. Replace.
5. Pump cavitation. High water temperatures or a suction line restriction, such
as a clogged strainer, will cause cavitation. Any restriction must be
corrected immediately or severe pump damage will result.
Receiver overflows constantly 1. Make-up valve seat worn, not sealing tight. Replace valve.
2. Make-up valve float water logged or disconnected. Replace.
3. Lower the level of make-up water to allow more tank volume for condensate.
Motor Failure 1. Tripped starter overload. Reset and check motor and pump for proper
operation.
2. Improper power supply. Check voltage and motor nameplate data.
3. Incorrect connections. Check wiring diagram.
4. Mechanical failure. Check for free rotation and examine bearings.
5. Short circuited windings. Indicated by blown fuse or failure to start. Motor
must be replaced.
6. Overload. Check pump for proper operation and free rotation.
7. One phase open in three phase curcuit. Check power supply lines.
Starter overload tripped 1. Reset and inspect pump and motor for proper operation.
Motor fails to start 1. Make certain boiler level switch is functioning properly.
2. Check control circuit for continuity.
Preheat kit solenoid valve does not open 1. Check wiring to the solenoid valve and aquastat.
2 If faulty, replace solenoid and or aquastat.