Checking And Replacing Fuses - Conair Thermolator TW-1 User Manual

This procedure covers the factory-installed fuses on the unit's
motherboard. If you have installed an electrical disconnect or
emergency stop switch, additional fuses and/or breakers may
have been used elsewhere in the main power circuit.
To replace a blown fuse:
1
Disconnect and lockout the main power.
2
Open the electrical enclosure door.
Turn the screw on the front panel counterclockwise to
open.
3
Replace the fuse.
board and are labeled and identified on the orange shield.
4
Close the electrical enclosure and restart the unit.
If fuse continues to fail:
r Verify that the unit is receiving the correct voltage.
Check the voltage, phasing and amperage ratings on the
unit's nameplate.
r Verify that the unit's transformer is operating correctly.
Check for proper voltage (120V ±10%) to the voltage
sensing device for the fuse location.
r Check all wiring referencing the fusing location for
loose connections, damage or improper grounding.
Verify that the correct device is being used for this fuse
location. See Disabling or Enabling Output Monitors,
Section 5.
Fuse 1
Control
power
OFF
1 2 3 4 5 6 7 8
UGH025-0504
The fuses are located on the mother-
3 PHASE INPUT
F5
UNLDR 1/ VENT 2 SOL
UNLDR 1/ VENT 2 SOL
UNLDR 2/ COOL 1 SOL
UNLDR 2/ COOL 1 SOL
F4
PUMP
PUMP
PUMP OL
PUMP OL
F2
PMP AUX
PMP AUX
1FS/ COMP AUX
1FS/ COMP AUX
PUMPDOWN
PUMPDOWN
HEAT/COMP
ON HEAT/COMP
CONFIGURATION HTS/COMP OL
DIP SWITCH HTS/COMP OL
F3
NC
ALARM
NO
110V
LLS/PURGE 3SOL
LLS/PURGE 3SOL +
PURGE 4SOL
PURGE 4 SOL +
F6
TCPL'S
SUP RET
1 2 3 4
Thermolator TW Series
Fuse 5
+ 4
Vent valve
3
+
2
1
Fuse 4
4
Cooling valve
3
2
1
Fuse 2
Pump
6
5
4
3
2
1
4
3
2
1
Fuse 3
6
N
5
Heater
C
4
3
2
C
1
4
3
Fuse 6
2
1
Purge valve
C
HECKING AND
R
EPLACING
F
USES
IMPORTANT:
refer to the wiring dia-
grams that came with
your Thermolator to
locate specific electrical
components. Illustrations
in the User Guide are
intended to be represen-
tative only.
T
ROUBLESHOOTING
Always
6-19