Intermatic T21000R SERIES Installation, Operation & Service Manual page 3

TO SET FILTER PUMP TIME SWITCH, follow
instructions on the right. The length of the daily filtration/
heating cycle depends on many variables such as size, shape,
geographic location of the pool, water chemistry, type of
pool equipment, usage and season of year. If not sure,
contact your local pool service professional for advice.
THE FIREMAN SWITCH (Heater Protection Mechanism),
if required, is factory set and shuts OFF the heater 20
minutes before the Time Switch turns OFF the filter pump.
The Fireman Switch requires no setting or service.
SYMPTOM
1. Time Switch will not keep
time but dial is turning.
2. Time Switch Dial stops
at ON or OFF tripper.
3. Dial stops after switch
turns OFF.
4. Load is ON at all times -
dial is turning.
5. Dead clock motor. (Clock
motor gears do not rotate).
OPERATION
Figure 2
TROUBLESHOOTING
CAUSE(S)
1a. Frequent power outages
1b. Wrong voltage/cycle
1c. Loose clock motor connections
2a. Loose tripper
2b. Bent dial
2c. Defective motor
3a. LINE leads are connected
to LOAD terminals
4a. Welded contacts
4b. Two ON trippers and
no OFF tripper on dial
4c. Defective mechanism
5a. Defective clock motor
(open coil due to lightning or surge)
5b. Loose clock motor connections
5c. Wrong voltage
3
TIME SWITCH OPERATING
INSTRUCTIONS
1. TO SET "ON" AND
"OFF" TIMES: Hold
TRIPPERS against edge of
CLOCK-DIAL, pointing
to time (AM or PM) when
ON and OFF operations
are desired. Tighten tripper
screws firmly.
2. TO SET TIME-OF-DAY:
Pull CLOCK-DIAL outward. Turn in either direction
and align the exact time-of-day on the CLOCK-DIAL
(the time now, when switch is being put into operation)
to the pointer.
• TO OPERATE SWITCH MANUALLY: Move
MANUAL LEVER below CLOCK-DIAL left or
right as indicated by arrows. This will not affect
the next operation.
• FOR MORE THAN ONE DAILY ON-OFF
OPERATION: Place additional tripper pairs on
CLOCK-DIAL (order 156T1978A).
• IN CASE OF POWER FAILURE: Reset CLOCK-
DIAL to proper time of day. See step 2 above.
CORRECTIVE ACTION
Reset dial
Change clock motor
Check connections
Check/change tripper
Check/change mechanism
Change clock motor
Reverse LINE and LOAD
connections
Change mechanism
Change tripper
Change mechanism
Change clock motor
Check connections
Change clock motor