Sotera SV Serie Manuel D'installation page 8

Symptom
1. Suction line problem.
2. Bypass valve open.
3. Vanes sticking.
5. Excessive rotor or vane wear.
6. Outlet blocked.
7. Vapor Lock
Pump won't
prime.
2. Suction line problem.
3. Bypass valve sticking.
4. Vanes sticking.
5. Excessive rotor or vane wear.
6. Hose or nozzle damage.
1. Incorrect voltage.
Pump runs 2. Vanes sticking.
slowly.
3. Wiring problem.
4. Motor problem.
1. Bypass valve sticking.
2. Low voltage.
3. Excessive rotor or vane wear.
Motor stalls.
4. Debris in pump cavity.
3. Restricted suction pipe.
4. Motor failure.
5. Pump rotor lock-up.
1.No power
2. Switch failure.
Motor
Inoperative. 3. Motor failure.
4. Incorrect/loose wiring.
5. Bad o-ring gasket.
6. Dirty shaft seal.
7. Bad shaft seal.
Fluid leakage.
8. Incompatible fluid.
9. Loose fasteners.
10. Motor Failure
Pump hums
11.Broken Key.
but will not
12. Rotor Vanes locked in SV
operate.
crystals.
Bold text indicates repairs that are not serviceable by the owner; pump must be returned to the point of purchase for repairs.
Cause
8
Cure
Check for leaks in suction line
Remove and inspect valve; must move
freely & be free of debris.
Check vanes and slots for nicks, burrs
and wear.*
Inspect rotor & vanes for excessive wear
or damage; replace if necessary.*
Check pump outlet, hose, nozzle & filter
for blockage.
Reduce vertical and horizontal distance
from pump to liquid; remove automatic
nozzle.
Check suction line for leaks or
restrictions; it may be too small, too long
or not airtight.
Remove and inspect valve; must move
freely & be free of debris.
Check vanes and slots for wear.
Inspect rotor & vanes for excessive wear
or damage; replace if necessary.*
Replace hose or nozzle.
Check incoming line voltage while pump
is running.
Inspect vanes and slots for nicks, burrs
and wear.*
Check for loose connections.
Return to place of purchase.
Remove and inspect valve; must move
freely & be free of debris.
Check incoming line voltage while pump
is running.
Check rotor & vanes for excessive wear
or damage.*
Clean debris from pump cavity.
Remove and clean pipe.
Return to place of purchase.
Clean and check pump rotor and vanes.
Check incoming power.
Return to place of purchase.
Return to place of purchase.
Check wiring.
Check all o-ring gaskets.
Clean seal & seal cavity.
Replace seal.
Refer wetted parts list to fluid
manufacturer.
Tighten fasteners.
Return to place of purchase.
Remove any debris and replace key.
*
See detailed explanation on page 9.