P. 4
23833A587 Bag #18812A108
P. 5
23833A587 Bag #18812A108
STARTING PUMP - S33A (AUTOMATIC)
1. These pumps have an integral mechanical (mercury-free) ball oat switch as shown on installation drawing. “Vertical switch”
models have a vertical actuated cylinder oat.
2. Plug cord into a 115 volt GROUNDED RECEPTACLE.
3. Run water into sump until pump starts.
4. Allow pump to operate through several on-off cycles to be sure operation is satisfactory.
5. If shut-off valve is used in discharge line, be sure valve is open.
6. If pump does not operate properly, see trouble service chart for remedy. NOTE: TETHER LENGTH OF SWITCH CORD ON BALL
FLOAT MUST BE MINIMUM OF 3-5/8" AS NOTED IN INSTALLATION STEP 1, PAGE 4.
USING THE S33M SUMP PUMP FOR MANUAL OPERATION
The pump cord for these units can be plugged directly into proper GROUNDED RECEPTACLE for continuous pump operation.
CAUTION: THIS TYPE OF OPERATION SHOULD BE USED ONLY FOR EMERGENCY USE OR WHERE A LARGE VOLUME OF WATER
IS TO BE PUMPED, SUCH AS FLOODED BASEMENT.
PUMP MUST NOT BE RUN CONTINUOUSLY OUT OF WATER. NOTE: RUNNING PUMP CONTINUOUSLY WILL VOID WARRANTY.
DO NOT USE WITH EXTENSION CORD.
AUTOMATIC/MANUAL MODEL
The Model S33 sump pump can be changed from one style, Automatic or Manual, to the other by interchanging only the plug ends
of the oat control with the manual plug. The ball oats must be tethered with a cable clamp, as shown. DO NOT REMOVE THE
MOTOR CAP.
HOW MECHANICAL SWITCH FLOAT OPERATES
This level control uses a mechanical switch sealed in a polypropylene oat cylinder. The switch is not position sensitive; that is, it will
operate regardless of position.
When level rises in the sump, the cylinder oats up with the level. When the cylinder position is at an angle of about 45º, the steel
ball rolls over a detent and actuates the switch. This starts the pump motor.
As the sump level draws down, the cylinder oats down and when it is again at an angle of about 45º, the steel ball drops away,
deactivating the switch and the motor stops.
BE SURE CYLINDER FLOATS FREELY IN SUMP BASIN WITHOUT TOUCHING THE BASIN WALLS. ADJUST PUMP POSITION IN
SUMP IF NECESSARY.
PUMP MOTOR
NEVER REMOVE MOTOR HOUSING OR UNSCREW PUMP IMPELLER. Warranty on pump is void if motor housing, impeller or seal
have been removed. Any repair on motor must be done by an authorized Myers service center.
MAINTENANCE AND SERVICE
If pump does not operate properly, follow steps shown on servicing chart. If trouble cannot be located with these steps shown, call
Myers service dealer, or take pump to Myers authorized service center.
CAUTION: FOR ANY WORK ON PUMP OR SWITCH, ALWAYS UNPLUG POWER CORD.
CLEANING FLOAT
If pump becomes inoperative because of accumulation of trash on the oat, remove from sump and clean oat.
1. Wipe all water and dirt from pump and oat and also the vertical rod on vertical models.
2. Be sure oat operates freely after cleaning.
CLEANING IMPELLER AND VOLUTE CASE
1. Remove (3) screws that hold bottom plate to volute case.
2. Remove (4) screws that hold volute case to metal motor housing.
3. Use screwdriver to pry plastic case from metal housing. Use care not to gouge groove in the plastic. Pry in several spots to loosen.
4. Remove volute case and clean impeller and volute passage.
5. Be sure impeller turns freely after cleaning.
6. Clean out holes in plastic pump base and wash thoroughly before replacing.
7. DO NOT UNSCREW IMPELLER.
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