DeLUX DPX12T, Installation & Operation Manual

Page: 83 / 383

SECTION 9
9-15
01/01/2014
B2. IF FAN #1 DOES NOT PULL IN AND VOLTAGE IS PRESENT
AT TERMINAL #53 (120 VOLTS), CHECK LOAD SIDE OF
STARTER COIL FOR PRESENCE OF VOLTAGE WHEN FAN
SWITCH (SW2) IS DEPRESSED. IF VOLTAGE IS PRESENT AT
LOAD SIDE OF COIL ON STARTER (S1), THE HOLDING COIL
IS DEFECTIVE AND MUST BE REPLACED. CHECK ALL COILS
ON OTHER FAN STARTER(S) (S2, S3, S4) IN SEQUENCE TO
FIND DEFECTIVE COIL AND REPLACE. NOTE: WHEN
CHECKING COILS ON FAN STARTER(S) (S2, S3, S4) THE
STARTER INTERLOCK(S) (SW15, SW16, SW17) ON THE
PREVIOUS STARTER MUST PULL IN AND THE FAN TIMER(S)
(K13, K14, K15) MUST TIME OUT TO SEE VOLTAGE
PRESENT ON THE NEXT STARTER.
B3. IF FAN #1 PULLS IN, CHECK LOAD SIDE OF INTERLOCK
(SW14) FOR PRESENCE OF VOLTAGE WHEN FAN SWITCH
(SW2) IS DEPRESSED. IF VOLTAGE IS PRESENT AT LOAD
SIDE OF INTERLOCK (SW14) CHECK OPPOSITE SIDE OF
INTERLOCK (SW14). IF NO POWER IS PRESENT THE
INTERLOCK (SW14) IS DEFECTIVE, REPLACE. CHECK ALL
INTERLOCKS ON OTHER FAN STARTER(S) (S2, S3, S4) IN
SEQUENCE TO FIND DEFECTIVE INTERLOCK AND REPLACE.
NOTE: TO CHECK INTERLOCK(S) (SW15, SW16, SW17) ON
OTHER FAN STARTER(S) (S2, S3, S4) STARTERS MUST BE
PULLED IN.
B4. IF FAN #1 PULLS IN, CHECK LOAD SIDE OF FAN TIMER
(K13) ON TERMINAL #2 (A1) LOCATED ON FAN TIMER
PLUG-IN BASE. IF VOLTAGE IS PRESENT (120 VOLTS)
THEN CHECK TERMINAL #3 LOCATED ON FAN TIMER (K13)
PLUG-IN BASE, REMEMBER TO ALLOW THE TIMER TO TIME
OUT BEFORE CHECKING VOLTAGE ON TERMINAL #3, IF
VOLTAGE IS NOT PRESENT THE FAN TIMER (K13) IS
DEFECTIVE, REPLACE. NOTE: TO CHECK OTHER TIMER(S)
(K14, K15) FOLLOW THE SAME PROCEDURE.
C1. IF SOME OR NONE OF THE FAN PROVEN LIGHTS STAY LIT
CHECK TO SEE IF THE FAN(S) ARE ROTATING IN THE
CORRECT DIRECTION. WHEN ELECTRICAL SERVICE IS
INSTALLED, ATTENTION MUST BE PAID TO PROPER
PHASING. ALL MOTORS HAVE BEEN PHASED AT THE
FACTORY. IN THE EVENT PHASES ARE REVERSED, SHUTOFF
POWER ON MAIN BREAKER, REVERSE L1 AND L3 AT MAIN
BREAKER. (WILD LEG MUST BE ON L2)
C2. IF VOLTAGE IS PRESENT ON TERMINAL #53 (120 VOLTS)
THEN CHECK FOR VOLTAGE ON TERMINAL #54 (120 VOLTS)
WHILE THE FAN(S) ARE LOCKED INTO OPERATION. IF NO
VOLTAGE IS PRESENT THE FAN AIR SENSOR (AS1) IS
DEFECTIVE, REPLACE. IF VOLTAGE IS PRESENT ON
TERMINAL #54 THE FAN PROVEN LIGHT (DS13) IS
DEFECTIVE, REPLACE.
C3. IF VOLTAGE IS PRESENT ON TERMINAL #54 (120 VOLTS)
THEN CHECK FOR VOLTAGE ON TERMINAL #55 (120 VOLTS)
WHILE THE FAN(S) ARE LOCKED INTO OPERATION. IF NO
VOLTAGE IS PRESENT THE FAN AIR SENSOR (AS2) IS
DEFECTIVE, REPLACE. IF VOLTAGE IS PRESENT ON