STA-RITE SCC10300320M-01 Manual Del Usuario página 5

Operation / Maintenance
OPERATION
Hazardous voltage. Disconnect electrical
power when working on or handling pump for any rea-
son. Do not use automatic reset controls with this pump.
Accidental rotation of the impeller with
hands in the impeller area can cause loss of fingers.
An automatic overload protector in the motor will protect
motor from burning out due to overheating/ overloading.
When motor cools down, overload protector will auto-
matically reset and start motor.
If overload trips frequently, check for cause. It could be a
stuck impeller, wrong/low voltage, bad thermal overload
protector, or an electrical failure in motor. If an electrical
failure in the motor is suspected, replace stator and shaft
assembly.
Lubrication: The motor bearings are of the sealed type.
Not equipped with thermostats or leak sensor probe.
Check the seal condition quarterly in heavy duty service
or annually in light duty service.
NOTE: Failure to monitor the seal condition voids war-
ranty. Motors damaged by flooding of motor cavity due to
seal or O-Ring failure may not be covered under warranty.
NOTE: Reduce the number of bends in discharge piping
to keep outlet flow as smooth as possible.
Verify the capacity of the pump, by checking the dis-
charge. Verify that the pump is free from any vibration
and noise.
For continuous operation, liquid level must be at least
14" to prevent motor overheating.
Do not allow pump to run in a dry sump. It will void the
warranty and may damage the pump.
Pump is permanently lubricated. No oiling or greasing is
required.
MAINTENANCE
Only qualified mechanics with proper tools and knowl-
edge should attempt to service this pump.
NOTICE: Whenever bearing bracket is being removed
for service, remove oil and replace with new oil at
reassembly. Use only oil listed in parts list (Part No.
U197-8A). When filling with new oil, DO NOT overfill.
To allow room for expansion, use exactly 1.8 pints
(0.77 liters) of oil with a cold bearing bracket.
The Key numbers given in these procedures refer to the
exploded view (Page 8).
Heavy parts. Use a hoist to lift and con-
trol the pump during repair.
NOTE: Be prepared to deal with a large quantity of oil
when draining the bearing bracket. Inspect the O-Rings
and castings for damage or evidence of leaks; check for
pinched or damaged wires.
Disinfect the Pump
1. Disconnect the electrical power supply.
2. Disconnect the discharge piping (this step is not nec-
essary if you have a guide-rail lift-out system).
3. Hoist the pump out of the pit using the lift-out sys-
tem or the handle (not the cord) and place the pump
in a suitable area where it can be cleaned.
4. Remove all scale and deposits from the pump.
Risk of infection from pathogens (such
as hepatitis) which can collect on pump during nor-
mal operation. Submerge the complete pump in a
disinfectant solution (chlorox or chlorine) for at least
one hour before disassembly.
Seal Change
Impeller Removal
1. Follow Steps 1 through 4 under "Disinfect the
Pump", above.
2. Unscrew the 4 cap screws holding the volute (Key
No. 26) to the seal bracket (Key No. 23). Tap around
the volute with a mallet or lead hammer to loosen it.
Lift the pump off of the volute.
NOTE: BE SURE you have the correct capscrews –
the wrong ones will release the seal plate from the
bracket and also release a lot of oil!
3. Lay the pump on its side and use an air wrench to
remove the impeller cap screw and impeller washer
(Key Nos. 55G and 53F).
4. With two screwdrivers, work the impeller (Key No.
27) down the shaft until it is free. Remove it.
5. The impeller key (Key No. 46) should come off the
shaft with the impeller. If not, remove it.
6. Reverse steps 2 through 5 to reinstall the impeller.
Seal Replacement
1. Follow Steps 1 through 4 under "Disinfect the
Pump", above.
2. Follow Steps 2 through 5 under "Impeller Removal",
above.
3. Remove the oil seal and shaft washer (Key Nos. 25
and 53E) from the top of the impeller.
4. With the pump on its side, remove the fill plug (Key
No. 55M) to drain the seal bracket. Put the oil into a
clean container and check for water in the oil and
for opacity (dirtiness) of the oil.
NOTE: Water is heavier than oil. Look for water at
the bottom of the oil. It will appear as tiny bubbles.
If there is water present in the oil, the shaft seal and
the oil will need to be replaced. If the oil is dirty,
replace it with new oil.
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