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5520, 5525, & 5530 WARMING CABINETS
4. Adjustments & Calibrations
TRANSFORMER
REPLACEMENT
Us
To replace the transformer, follow instructions
as outlined in Steps 1 thru 5 under Access to
Control
Box
Components
for access
to the
transformer. .
Disconnect the wires. Note location of wires for
reassembly.
Replace the transformer which
is secured to the
bottom of the control box with two bolts, nuts,
and washers.
LOW VOLTAGE POWER SUPPLY
REPLACEMENT
E
To replace the power supply, remove the con-
trol box from the Warming Cabinet as outlined
in Steps 1 thru 9 as outlined under Access to
Control Box Components.
Remove #1 wire from 2A1J and #4 wire from
2A2TB terminal strip.
Remove the four screws that secure the power
supply.
Retain
the four spacers
between
the
power supply and panel
which
must be reas-
sembled with the replacement power supply.
After replacing the power supply, calibrate it as
outlined
under
Low
Voltage
Power
Supply
Calibration.
FAN REPLACEMENT
È
Toreplace the fan, remove the control box from
the Warming Cabinet as outlined in Steps 1 thru
9 under Access to Control Box Components.
Disconnect the fan wiring.
Remove the four bolts, nuts, and washers that
secure the fan.
HEATER REPLACEMENT
1.
То replace heaters,
remove
the control
box
from the Warming Cabinet as outlined in Steps
1 thru 9 under
Access
to Control
Box
Com-
ponents.
Remove the heater cover which is secured with
three screws.
Unscrew the heaters from the heater sockets.
Replace
in
the
exact
location
from
which
removed.
THERMOSTAT REPLACEMENT
1.
To replace the thermostat, remove the control
box from the Warming Cabinet as outlined in
Steps
1 thru 9 under Access
to Control
Box
Components.
Remove wires from the thermostat.
Remove
the
thermostat
which
is secured
to
standoffs, with screws.
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