DeLUX DPX12T, Installation & Operation Manual

Page: 73 / 383

SECTION 9
9-5
01/01/2014
A2. IF VOLTAGE IS PRESENT ON TERMINAL #28 (120 VOLTS)
THEN CHECK FOR VOLTAGE ON TERMINAL #29 (120 VOLTS)
WHILE HOLDING THE POWER SWITCH (SW1) IN THE "ON"
POSITION. IF NO VOLTAGE IS PRESENT, THE PLENUM HIGH
LIMIT MAY HAVE TRIPPED FROM EXCESSIVE HEAT IN THE
PLENUM CHAMBER, RESET. IF VOLTAGE IS PRESENT ON
TERMINAL #29 (120 VOLTS) THE PLENUM HIGH LIMIT
LIGHT (DS2) IS DEFECTIVE, REPLACE.
(FOR ALL MODELS,
REFER TO THE “AUTOMATIC TEMPERATURE CONTROL”
SECTION FOR OPERATION AND A TROUBLE SHOOTING GUIDE
FOR THE TEMPERATURE/HIGH LIMIT SYSTEM)
A3. IF VOLTAGE IS PRESENT ON TERMINAL #29 (120 VOLTS)
THEN CHECK FOR VOLTAGE ON TERMINAL #30 (120 VOLTS)
WHILE HOLDING THE POWER SWITCH (SW1) IN THE "ON"
POSITION. IF NO VOLTAGE IS PRESENT, ONE OR MORE FAN
STARTER OVERLOADS (S1 THRU S4) MAY HAVE TRIPPED
FROM A MOTOR DRAWING HIGH AMPERAGE. DETERMINE WHICH
ONE IS OPEN. RESET TRIPPED OVERLOAD.
IT WILL BE
NECESSARY TO DETERMINE IF A SHORT CIRCUIT OR
OVERLOAD CONDITION EXISTS IN THIS SYSTEM AND WHAT
CORRECTIVE STEPS NEED TO BE TAKEN TO RESOLVE THIS
CONDITION.
IF VOLTAGE IS PRESENT ON TERMINAL #30
(120 VOLTS) THE FAN OVERLOAD LIGHT (DS3) IS
DEFECTIVE, REPLACE.
A4. IF VOLTAGE IS PRESENT ON TERMINAL #30 (120 VOLTS)
THEN CHECK FOR VOLTAGE ON TERMINAL #31 (120 VOLTS)
WHILE HOLDING THE POWER SWITCH (SW1) IN THE "ON"
POSITION. IF NO VOLTAGE IS PRESENT, ONE OR MORE
CONVEYOR STARTER OVERLOADS (S5 THRU S8) MAY HAVE
TRIPPED FROM A MOTOR DRAWING HIGH AMPERAGE.
DETERMINE WHICH ONE IS OPEN. RESET TRIPPED
OVERLOAD.
IT WILL BE NECESSARY TO DETERMINE IF A
SHORT CIRCUIT OR OVERLOAD CONDITION EXISTS IN THIS
SYSTEM AND WHAT CORRECTIVE STEPS NEED TO BE TAKEN
TO RESOLVE THIS CONDITION.
IF VOLTAGE IS PRESENT ON
TERMINAL #31 (120 VOLTS) THE CONVEYOR OVERLOAD
LIGHT (DS4) IS DEFECTIVE, REPLACE.
A5. (NOTE: THE FEEDROLL MONITOR IS MEANT TO OPERATE
WHILE THE METERING SYSTEM IS OPERATING. IF NOT, THE
FEEDROLL MONITOR SELECTOR SWITCH (SW7) SHOULD BE IN
THE “OFF” POSITION. ALSO, POWER IS NOT SUPPLIED TO
THE FEEDROLL MONITOR SELECTOR SWITCH (SW7) UNTIL
THE UNLOAD LOAD SWITCH (SW5) IS “ON”.)
WITH THE
FEEDROLL SELECTOR SWITCH IN THE “OFF” POSITION, IF
VOLTAGE IS PRESENT ON TERMINAL #31 (120 VOLTS) THEN
CHECK FOR VOLTAGE ON TERMINAL #32 (120 VOLTS) WHILE
HOLDING THE POWER SWITCH (SW1) IN THE "ON"
POSITION. IF NO VOLTAGE IS PRESENT, ONE OR BOTH OF
THE TIME DELAY RELAYS (K10 & K11) ARE DEFECTIVE.
REPLACE. WITH THE METERING SYSTEM OPERATING AND THE
FEEDROLL MONITOR SELECTOR SWITCH (SW7) “ON”, IF
DRYER SHUTS DOWN WITHIN 60 SECONDS, CHECK VOLTAGE
(120 VOLTS) ON TERMINALS #62 AND #63. VOLTAGE
SHOULD BE PRESENT ON EACH TERMINAL ABOUT EVERY 2 TO