Maintenance • Troubleshooting - Flotec AT251001 Manual Del Usuario

Maintenance • Troubleshooting
2. If ceramic seat will not locate properly, remove it,
place face up on bench and reclean cavity. Ceramic
seat should now locate.
3. If seat still will not locate properly, place a cardboard
washer over the polished face and use a piece of
3/4" (19mm) standard pipe for pressing purposes.
NOTICE Be sure not to scratch or mar polished
surface or seal will leak.
4. Replace slinger on end of motor shaft so that
impeller sleeve will push it into position. If slinger
shows signs of wear or damage, replace it.
5. Remount seal plate on motor. Tighten bolts to
60-80 inch-lbs. (69-92 kg/cm) torque.
6. Apply a small amount of liquid detergent to inside
diameter of rotating half of seal.
Troubleshooting
Risk of electric shock . Can shock, burn or kill.
• Disconnect power before working on pump or motor.
• Read and understand safety and operating instructions in this manual before doing any work on pump!
• Only qualified personnel should electrically test pump motor!
Issue
Failure to pump; reduced capacity or discharge pressure
Suction leaks/lost prime:
Clogged pipe/trap/impeller, worn
impeller:
Electrical:
Pump may be running too slowly
Pump may be too hot.
Mechanical troubles and noise
For parts or assistance, call Flotec Customer Service at 1-800-365-6832.
Solution
Pump must be primed; make sure that pump volute and trap are full of water. See Priming Pump.
Make sure there are no leaks in suction piping.
Make sure suction pipe inlet is well below the water level to prevent pump from sucking air.
If suction trap gasket is defective, replace it.
Make sure pump is not trying to lift water more than 10' (3m).
Make sure suction pipe is at least 1-1/2" (38mm) in diameter.
Make sure suction trap is not clogged; if it is, clean trap and strainer.
Make sure impeller is not clogged (follow instructions in Removing Old Seal; check impeller for clogging; follow
instructions in Installing New Seal for reassembly).
Impeller and diffuser may be worn. If so, order replacement parts. See Repair Parts.
Check voltage at motor terminals and at meter while pump is running. If low, see wiring instructions or consult power
company. Check for loose connections.
Check line voltage; if less than 90% or more than 110% of rated voltage consult a licensed electrician.
Increase ventilation.
Reduce ambient temperature.
Tighten any loose connections.
If suction and discharge piping are not adequately supported, pump assembly will be strained. See Installation.
Do not mount pump on a wooden platform! Securely mount on concrete platform for quietest performance.
7. Slide rotating seal member, polished carbon face out,
over impeller sleeve until rubber drive ring hits back
of impeller.
NOTICE Be sure not to nick or scratch polished seal
face; seal will leak if face is damaged.
8. Screw impeller onto shaft (clockwise); this will
automatically locate seal in seal plate.
9. Mount diffuser on seal plate; tighten screws to
10-14 inch-lbs. (11.2-16.1 kg/cm) torque.
10. Assemble motor and seal plate to pump body with
nuts, flat washers and lock washers. Torque nuts to
120-130 in-lbs. (138-150 kg/cm).
11. Prime pump according to instructions in
Priming Pump.
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