cover, suction line connections, and valve stem glands before
repeating Step 1.
3. After about ten minutes of operation check the pool return
fittings for air bubbles. A continuous flow of air indicates leaks
in the suction line. Locate and correct any leaks immediately.
CONTROLLING THE OUTPUT.
Keep the gate valve in the
suction line fully open during operation. Should it be necessary
to control the output, use a valve in the return line.
CLEANING THE HAIR AND LINT STRAINER.
Switch off the
power. Close the valves in the suction and return lines. Remove
the Ring-Lok and cover and lift out the strainer basket. Clean
and replace the basket. Take care to seat the O-ring properly.
Place cover back on, replace Ring-Lok (hand tighten only) and
reopen valves. Put pump back into operation.
NOTE: Do not
re-tighten Ring-Lok during operation.
LUBRICATION.
The pump requires no lubrication.
DRAINING.
There is a drain plug on the pump case. Note that
the valves in the suction and return lines must be open to allow
complete draining of the pump, but that other provisions may be
necessary for draining the filter, heater, and pipe lines.
MAINTENANCE
The pump can be serviced without breaking the pipe connections.
Close the gate valves, open the disconnect switch, and remove
the fuses before starting work on the pump.
TO DISMANTLE PUMP
Remove the splash cover by taking out three self-tapping
screws. There is not need to disconnect the cord from the motor
unless the motor is to be replaced or repaired.
Remove the six bolts that hold the pump together, and withdraw
the motor, motor adapter, seal, and impeller from the pump case
as a unit. Unscrew the impeller by using a screwdriver in the slot
at the other end of the motor shaft. Remove the four long screws
that hold the motor to the adapter.
SHAFT SEAL.
Take great care while handling the shaft seal to
avoid damage to its lapped carbon and ceramic sealing faces.
Replace the complete assembly if the seal leaks; do not use old
parts.
TO REMOVE OLD SHAFT SEAL.
After dismantling the pump
and removing the impeller as already described, pull the rotating
parts of the seal from the hub of the impeller. Press or tap the
stationary ceramic seal and its rubber boot from the motor
adapter.
INSPECTION.
Inspect all parts of the pump for wear or damage,
and order replacements as necessary. Check the seal carefully.
Look for cracks in the ceramic seat. Check the rotating seal face
for wear and nicks. Flex the rubber parts and check them for
holes and cracks. Discard the complete seal if any part is
unserviceable.
TO FIT NEW SEAL.
DO NOT USE OIL OR GREASE ON THE
SEAL PARTS because either may damage the thermoplastic
material of the pump through overheating or chemical reaction.
Make sure that the pump parts are clean, but be careful not to
scratch the surfaces that come into contact with the seal parts.
Moisten the rubber cup of the new stationary seat with WATER.
Protect the sealing surface with a disc of clean cardboard, and
use a light mallet and small wooden block to tap the seat gently
into the motor adapter. Be sure that the lapped sealing surface
faces the pump. Reassemble the adapter on the motor.
Moisten the bore of the new rotating seal assembly with WATER.
Push the assembly into position on the hub of the impeller with
Defective motor bearings;
Valve in suction line partly closed;
Suction line partly plugged;
Vacuum cleaner hose plugged or
too small;
Piping causing strain on pump case;
Impeller rubbing on pump case.
LEAKAGE OF WATER AT SHAFT:
Shaft seal requires replacement.
AIR BUBBLES AT INLET
FITTINGS:
Leakage of air into suction line at
connections;
Cover of hair and lint strainer not
airtight;
Restriction in suction line;
Low water level in pool.
SHORT FILTER CYCLE:
Excessive dirt load;
Excessive swimming load;
Dirty make-up water;
Algae growth;
Excessive filter rate;
Filter not backwashed properly;
Inadequate backwash line;
Calcification of filter sand;
Coagulants or algicide added to
pool.
INADEQUATE FILTER ACTION:
Refer to SHORT FILTER CYCLE
above;
Filter rate too low;
Incorrect sand or placement of sand;
Channels in sand;
Air accumulating in filter.
DIRT RETURNED TO POOL:
Excessive filter rate;
Inadequate flushing after
backwashing;
Air accumulating in filter;
Pool water not kept in
continuous
chemical balance;
Excessive chlorination.
SAND RETURNED TO POOL:
Incorrect sand or placement of sand;
Excessive filter rate;
Calcification of sand;
Air accumulating in filter;
Broken underdrain.
ANORMAL LOSS OF POOL
WATER:
Leak inside dial valve;
Leakage from pool structure.
TROUBLE-SHOOTING
MOTOR DOES NOT START:
Disconnect switch open;
Fuses blown or thermal overload
open;
Motor windings burned out;
Defective starting switch inside
motor;
Disconnected or defective wiring.
MOTOR DOES NOT REACH FULL
SPEED:
Low voltage;
Motor windings connected for wrong
voltage;
Shaft binding or impeller rubbing.
MOTOR OVERHEATS (Protector
trips):
Low voltage;
Motor windings connected for wrong
voltage;
Inadequate ventilation.
PUMP DELIVERS NO WATER:
Pump not primed;
Closed valve in suction or discharge
line;
Suction or discharge line plugged;
Leakage of air into suction system;
Impeller plugged.
LOW PUMP CAPACITY:
Check setting of dial valve;
Valve in suction or discharge line
partly closed;
Suction or discharge line partly
plugged;
Suction or discharge line too small;
Pump running at reduced speed
(see above);
Plugged basket in skimmer or hair
and lint strainer;
Dirty filter;
Impeller plugged.
LOW PUMP PRESSURE:
Check setting of dial valve;
Pump running at reduced speed
(see above);
Discharge valve or inlet fitting
opened too much;
Leakage of air into suction system.
HIGH PUMP PRESSURE:
Discharge valve or inlet fittings
closed too much;
Return lines too small;
Dirty filter.
NOISY PUMP AND MOTOR:
Plugged basket in skimmer or hair
and lint strainer;
2
its sealing surface facing outward. Insert a screwdriver into the
slot at the other end of the motor shaft, and screw the impeller
to the shaft by hand, because normal operation tends to tighten
them together. Make sure that the gasket is properly positioned
in its groove on the face of the adapter, then reassemble the
adapter to the pump case. Apply even tension to the bolts by
tightening opposite pairs in turn. Refit the splash cover.
LES ÉQUIPEMENTS DE PISCINE CARVIN INC.
CARVIN POOL EQUIPMENT INC.
4000, boul. Casavant Ouest, Saint-Hyacinthe (Québec) Canada J2S 9E3
Tel: 450 250-4500 | Fax: 450 250-4501 | Sans-frais Toll Free: 1 866 979-4501
www.carvinpool.com
