3-Minute Timer - Cleveland steamcraft 21-CET-8 Service Manual

3-Minute Timer

• If the valve fills the generator to the high level and stops, the valve is operating
properly.
a. Reconnect the gray wire to the 3-minute timer terminal 2.
b. Set the ON/OFF switch to the ON position.
c. Test the float high level switch.
1. Set the voltmeter to the 250 VAC scale.
2. Set the ON/OFF switch to the ON position.
3. Refer to Figure 5-17, and connect the voltmeter across timer terminals 1-3
(LOAD).
4. Watch and time the meter readings a s the timer counts down. Set the ON/OFF
switch to the OFF position, and start riming the meter readings.
• If the meter reads 120 VAC across the LOAD terminals during the 3-minuie
countdown, and drops to 0 VAC after the countdown; the 3-minute tuner is
good. End this procedure here.
• If the meter reads 120 VAC across the LOAD terminals for more than the 3-
minute countdown, continue this test with step 5.
• If during the 3-minute countdown, the meter does not read 120 VAC across
the LOAD terminals, continue this test with step 6.
5. If the timer does not count down, either there is no load on the timing circuit, or
the timer is broken.
a. Check the blue wire and the white/gray wire from the timer to the fill solenoid
and rinse solenoid for continuity and secure connections. Replace or repair
faulty wiring and connections. Repeat steps 2,3, and 4.
b. Check the fill solenoid and the rinse solenoid for open coils. Replace solenoid
valves that have open coils, and repeat steps 2,3, and 4.
c. If the wiring and solenoids are good, but the 3 -minute timer does not count
down, replace the 3-minute timer.
6. Check for 120 VAC across the 3-minute timer INPUT terminals 2-3.
• If the meter reads 120 VAC across the INPUT terminals, replace the 3-minute
timer.
• If the meter does not read 120 VAC across the INPUT terminals, replace the
3-minute timer.
a. Check the gray wire and the white/gray wire between the timer and the
ON/OFF switch for continuity and secure connections. Replace or repair
faulty wiring and connections.
b. Test the ON/OFF switch.
Model 21-CET-8 Service Manual
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