Blue Angel Pumps SBS50BOOST - Manual (Page 5)

5
Operating Instructions and Parts Manual SBS50 Boost
Troubleshooting Chart
ELECTRICAL PRECAUTIONS - Before servicing a pump, always shut off the main power breaker and then unplug
the pump. Make sure you are not standing in water and are wearing insulated protective sole shoes. Under
fl ooded conditions, contact your local electric company or qualifi ed licensed electrician for disconnecting electrical service prior
to pump removal.
Symptom Possible Cause(s) Corrective Action
Pump won’t start or run
at full speed 1. Blown fuse or open circuit breaker 1. Replace fuse or close circuit breaker. See wire
chart for proper breaker/fuse size
2. AC power is OFF 2. Turn power on
3. Incorrect voltage 3. Low voltage
a. Voltage must be within ± 10% of motor rated
voltage. Check incoming voltage. Contact
power company
b. Motor voltage is set for 120V AC. System is
not designed for 240V service.
4. Defective motor 4. Replace motor
5. Pump internal components clogged/
worn/ damaged
5. Replace worn parts or entire pump. Clean parts if
required
Pump operates, but
delivers little or no water 1. Valves plumbed into system restricting
fl ow
1. a. Check valves on pump inlet and discharge sides
of system. Be certain they are opened com-
pletely to allow fl ow to and from the pump.
b. Bleed trapped air in pump. (Normally due to
closed valve in discharge plumbing).
2. In-line fi lter restricting fl ow 2. Check all in-line fi lters to be sure they are not
plugged or restricted
3. Low line voltage 3. See low line voltage corrective action (above)
4. Inadequate water supply to booster
pump
4. Check pressure on inlet side of booster to be sure
positive pressure is maintained to the booster
pump at all times
5. Undersized piping 5. Replace undersized piping
6. Leak on inlet side of system 6. Make sure connections are tight. Repair leaks as
needed
7. Worn or defective pump parts or pump 7. Replace worn parts or entire plugged impeller.
Clean parts if required
8. Suction lift to great 8. Pump should be operated under fl ooded suction
only. See Corrective Action 4 above.
9. Pump not primed 9. Prime pump. Make certain inlet pipe connections
are tight and pump and pipe are full of water
Excessive noise while
pumping 1. Pump not secured to fi rm foundation 1. Secure properly
2. Piping not supported 2. Make adjustments
3. Restricted inlet line 3. Clean, correct, or eliminate restrictions
4. Cavitation (pumping marbles) 4. Increase inlet pipe size
5. Worn motor bearings 5. Replace motor
Pump leaks 1. Worn mechanical seal (leaks at shaft) 1. Replace shaft (rotary) seal
2. Damaged o-ring seals 2. Replace square ring rubber gasket
www.blueangelpumps.com