Cleveland SteamCraft 10 Service Manual page 113

Models 24-CGA-10, and 24-CEA-10
PHASE 4 TESTING
MECHANICAL DIAL TIMER TEST SEQUENCE
IT:4-1 Simultaneously start a stopwatch and turn the timer dial of the upper control panel to the 5-
minute setting.
IT:4-2 Does the burner fan motor start when the dial timer starts its countdown?
YES NO
Cleveland Range, Inc.
SteamCraft 10 Service Manual, Chapter 6
This phase of testing pertains to the components associated with timer controlled
steaming functions. After completing Phase 3 Testing, verify that the following
conditions are set to start Phase 4 testing:
• The right side and front access panels are removed and the float assembly. relays
and contractors are clearly visible.
• The Main Disconnect Switch is in the ON position and the 3-minute blowdown
cycle has stopped.
• The ON/OFF power switch is in the ON position.
• Both upper and lower compartment TIMED/MANUAL switches are in the
TIMED position.
• Both upper and lower compartment timers are set for zero minutes.
• The water in the steam generator is at pre-heat temperature. To quickly lower the
generator water temperature, run a partial blowdown cycle, as described at the
end of Phase 3.
For units with Mechanical Dial Timers, start this procedure with IT:4-1.
For units with Electronic Key Pad Timers, start this procedure with IT:4-6.
NOTE: In TIMED mode, setting a cooking time for either compartment activates
the steam valve, the condenser valve, and the burner relay (R1 or R2) for that
compartment.
NOTE: The burner relay (R1 orR2) energizes relay R3 starting the fan motor and
the burner ignition sequence. If the fan does not trigger the air prover pressure
switch, the burners do not light.
The burner ignition and control components have already been tested in Phase 3,
above. Only a failure of the TIMED/MANUAL switch and/or the mechanical timer
can prevent the burner fan from starting the burner ignition sequence.
1. Check the TIMED/MANUAL switch according to component test CT:9.
2. Check the mechanical timer according to component test CT:13.
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