
57
A voltmeter is required for some of the following checkout
procedures. Before performing any tests, make certain to
determine if dryer power supply is 3 PH 230V or 3 PH 460V.
The general control circuit and safety circuits are 115 volt on
all model dryers. When checking these circuits, MEASURE
VOLTAGE BETWEEN THE CIRCUIT TEST LOCATION
AND GROUND.
REFER TO WIRING DIAGRAMS AND PARTS LIST FOR
IDENTIFICATION OF PARTS AND ELECTRICAL TERMI-
NALS. When right- or left-hand side of dryer is mentioned,
it is as viewed from the rear end of the dryer (opposite fan
end).
CAUTION: When making high voltage tests with
live circuits, be extremely careful to follow estab-
lished safety practices. Turn power ON for test-
ing only. DO NOT ATTEMPT TO MAKE THE
DRYER OPERATE BY USING A JUMPER WIRE TO
BYPASS A DEFECTIVE COMPONENT.
TROUBLE
CHECKOUT PROCEDURE & INFORMATION
Control Circuit
Not Energized - Shutdown
Indicator Lights OFF.
1. POWER SUPPLY - Check that MAIN POWER SUPPLY and CIRCUIT BREAKERS are turned ON.
Also check for a tripped circuit breaker.
2. FUSES - Check for blown safety circuit fuse(s). See appropriate POWER CIRCUIT diagram for
location and number used.
3. OVERLOAD RELAY - Check for tripped overload relay.
4. STOP OR START SWITCHES - Check for a defective STOP or START switch. Also check switch
wiring connections.
5. 1CR RELAY - Check for a defective 1CR relay, relay base, or faulty wiring.
Control Circuit Not
Energized - Shutdown
Indicator Light ON.
SHUTDOWN INDICATOR LIGHTS
BURNER LOCKOUT (manual reset: press button on Flame Safeguard)
LOW GRAIN (auto resets immediately)
METER ROLL MONITOR (auto resets immediately)
PLENUM HI-LIMIT (auto resets after cooling)
GRAIN HI-LIMIT (auto resets after cooling)
ASC PANEL INDICATOR LIGHTS
Meter Roll Monitor Light (auto resets immediately)
Meter rolls rotation has not been sensed for (3) min.
A. Meter roll selector switch is off
B. Meter rolls jammed
C. Meter roll drive failed
D. Meter roll proximity switch requires adjustment
NOTE: It is normal for the meter roll light to be ON when the control circuit is in the off position and
the main disconnect is powered.
Low Grain Light (auto resets immediately). Indicates Load Timer has been energized longer
than set time for the following possible reasons:
A.
Insufficient grain supply to fill dryer
B.
Load timer set incorrectly:
load time set too low
timer set to incorrect range
timer memory set incorrectly to ON
C. Failed load drive
Plenum High Light (auto resets after cooling). Indicates Plenum Hi-limit switch has reached
300°F for the following possible reasons:
A.
Plenum temperature set too high
B.
Minimum gas pressure setting too high
C.
Plenum controller failed
D.
Plenum RTD failed
E.
Plenum hi-limit switch failed
Содержание C-21100B
Страница 22: ...20 ...
Страница 36: ...34 Fig 6 3 LP vaporizer assembly Fig 6 4 ASC control panel ...
Страница 49: ...Fig 8 1 Power circuit 220V 3 PH for C 2130B C 2140B C 2160B only 47 4B0280A TIF ...
Страница 50: ...48 Fig 8 2 Power cirucit 220V Part wind start for C 2175B C 21100 models only 4B0280C TIF ...
Страница 51: ...49 Fig 8 3 Power circuit 440V 3 PH for all C 2100B models 4B0280B TIF ...
Страница 52: ...Fig 8 4 Control circuit all models except part wind start p 1 of 3 50 4B0280D TIF ...
Страница 53: ...Fig 8 4 Control circuit all models except part wind start p 2 of 3 51 4B0280E TIF ...
Страница 55: ...Fig 8 5 Control circuit part wind start models only p 1 of 3 53 4B0280H TIF ...
Страница 56: ...Fig 8 5 Control circuit part wind start models only p 2 of 3 54 4B0280I TIF ...
Страница 58: ...Fig 8 6 Safety circuit portion of control circuit all models 56 4B0280G TIF ...
Страница 65: ......