M411429 21
Section 3 Troubleshooting
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect electric power to the tumbler before servicing.
• Close gas shut-off valve to gas tumbler before servicing.
• Close steam valve to steam tumbler before servicing.
• Never start the tumbler with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the tumbler is properly grounded.
W002
WARNING
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20. TUMBLER RUNS BUT NO STEAM TO COILS — STEAM MODELS
21. WATER IN STEAM LINE — STEAM MODELS
POSSIBLE CAUSE TO CORRECT
Valves closed. • Check all valves in supply and return lines, make sure
they are open.
Blocked steam trap. • Remove trap and clean. Replace if inoperative.
Inoperative solenoid valve. • Check operation of solenoid valve.
Incorrect installation of check valve. • Check for inlet and outlet markings on check valve, and
invert if necessary.
Clogged strainer. • Remove strainer and clean.
Inoperative timer or thermostat • Test timer or thermostat. Replace if inoperative.
POSSIBLE CAUSE TO CORRECT
Incorrect installation of steam piping. • Refer to Installation Manual (supplied with tumbler) for
steam requirements.
Trap functioning improperly. • Check trap for size and capacity. If trap is dirty or sluggish
clean thoroughly or replace. Check return line for high
back pressure.
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