59
TROUBLE
CHECKOUT PROCEDURE & INFORMATION
...cont.
4.
Verify closing of top auger contactor; check voltage on load side of contactor. Inspect contactor
for defective points or a burned out coil.
5.
Inspect connections and check voltage applied to motor leads in motor junction box to determine
if motor is defective.
6.
Check for plugged front columns.
Top Auger Will Not Stop
When Full
1.
Check position of upper auger paddle and its switch box - paddle should be adjusted in the
"down" with switch box horizontal. Paddle must stop auger well before striking the top of the auger
cover. Paddle should rotate freely without "sticking." See Fig 4-1.
2.
Inspect for secure mounting and wiring of mercury switches in terminal box on top auger paddle
switch shaft. Include check for defective mercury switch. When dryer has filled, both mercury switch-
es should be open and supplying no voltage to top auger contactor coil.
3.
Check the Auxiliary contacts on the load auger for proper operation. Contacts which bind or
stick in the closed position will not allow the auger to stop.
Fan Motor Will Not Start
Bottom Auger Will Not
Start
Meter Rolls Will Not
Operate (SCR Drive)
Temperature or Moisture
Controller Error Messages
(Honeywell UDC 2000)
1.
Check that fan circuit breaker and fan switch are ON; also for defective switch or bad wiring con-
nections.
2.
Verify closing of fan motor contactor; check for voltage on load side of contactor and for 120V to
contactor coil. See POWER CIRCUIT and GENERAL CONTROL CIRCUIT wiring diagrams for fan
circuit details. Inspect contactor for defective points or burned-out coil.
3.
Inspect connections and check voltage applied to motor leads in motor junction box to determine
if motor is defective.
4.
If motor starts slowly, check for low voltage during starting, due to excessive voltage drop in
power supply wiring.
1.
Check that bottom auger circuit breaker is ON.
2.
Check that UNLOAD switch is set to AUTO.
3.
Verify closing of bottom auger contactor; check voltage on load side of contactor.
4.
Burner control locked out. Check for Burner Lockout light. Push burner control reset button on
the Flame Safeguard Control in the ASC box.
5.
If power was present in previous step, inspect connections and check voltage applied to motor
leads in motor junction box to determine if motor is defective.
1.
Check that UNLOAD circuit breaker is ON, SCR SPEED CONTROL is properly set, UNLOAD
switch is on AUTO and that meter rolls are not jammed (with SCR motor stalled or drive belt slipping).
2.
Check that 230V is present across the load side of the special 10 Amp rectifier fuses (terminal
nos. 60 and 62). Replace fuses if blown and determine cause (short circuit or severe voltage spikes,
etc.).
3.
Check that the unload contactor is energized and that it has closed its auxiliary contacts which
complete the switch circuit of SCR board assembly (terminals 6 and 7 on Woods SCR boards).
• Check for 230V present across AC line terminals L1 and L2 on SCR board assembly (with unload
auger operating).
• Check SCR board terminals 1 and 3 for 10V DC.
• Check SCR board terminals 2 and 3 for 1-10V DC varying with speed setting (with Unloading Switch
in manual). If no voltage or voltage does not vary, check SCR speed control pot (Manual Unloading
dial on ASC panel) or wiring to pot. If pot checks OK, replace Auto Range Module.
4.
Turn SCR speed pot fully clockwise; check DC voltage between armature A1 (+) and A2 (-) ter-
minals on SCR board. Voltage should increase from near 10V DC to 180V DC as speed control is
moved to the MAXIMUM SCR speed setting.
5.
Inspect wiring connections and check voltage applied to motor leads in motor junction box to
determine if DC motor is bad.
1. IN1RNG Error Message
SHORTED SENSOR CIRCUIT - Disconnect sensor leads form terminal strip. Using a VOM tester,
test the sensor leads for approx. 100 ohms resistance (at 32°F). If test indicates a SHORTED condi-
tion, trace wires back to the sensor and repeat the test. Replace defective sensor or correct the
wiring problem as required.
OPEN SENSOR - Disconnect sensor leads from terminal strip. Using a VOM tester, test the sensor
leads for approx. 100 ohms resistance (at 32°F). If the circuit tests OPEN, replace defective sensor
Summary of Contents for C-2130B
Page 22: ...20...
Page 36: ...34 Fig 6 3 LP vaporizer assembly Fig 6 4 ASC control panel...
Page 49: ...Fig 8 1 Power circuit 220V 3 PH for C 2130B C 2140B C 2160B only 47 4B0280A TIF...
Page 50: ...48 Fig 8 2 Power cirucit 220V Part wind start for C 2175B C 21100 models only 4B0280C TIF...
Page 51: ...49 Fig 8 3 Power circuit 440V 3 PH for all C 2100B models 4B0280B TIF...
Page 52: ...Fig 8 4 Control circuit all models except part wind start p 1 of 3 50 4B0280D TIF...
Page 53: ...Fig 8 4 Control circuit all models except part wind start p 2 of 3 51 4B0280E TIF...
Page 55: ...Fig 8 5 Control circuit part wind start models only p 1 of 3 53 4B0280H TIF...
Page 56: ...Fig 8 5 Control circuit part wind start models only p 2 of 3 54 4B0280I TIF...
Page 58: ...Fig 8 6 Safety circuit portion of control circuit all models 56 4B0280G TIF...
Page 65: ......