Southbend 20108RSB - Manual (Page 12)

12 Printed in USA 12/02 Refrigerated Base-Remote © 2002
CORRECTIVE MAINTENANCE
Replacement of the Condensing Fan i
1. Disconnect all electrical power to the unit.
2. Remove the condensing unit from the condensing unit
compartment.
3. Remove the protective wire shroud from around the
motor.
4. Using an allen wrench, loosen the set screw on the
blade hub and slide the blade from the shaft.
5. Reverse the procedure to reassemble.
Replacement of the Anti-Condensate Heater
NOTE: The anti-condensate heater is located behind the
front edge of the vinyl breakers in the door opening.
1. Disconnect all electrical power to the cabinet.
2. Remove vinyl breakers by exerting pressure at the
front edge toward the center of the door.
3. Disconnect anti-condensate heater wiring connection.
4. Remove heater from recessed rail.
5. Replace new heater in rail and reconnect electrical.
Replacement of Drawer Gasket
1. Remove the gasket by pulling it out of the snap-in
track.
2. Clean the gasket track and the immediate area.
3. Snap new gasket into retainer.
Replacement of Power Switch
1. Shut off all electrical power going to the unit.
2. Remove the front air grill.
3. Using a flat blade screwdriver, remove the cover plate
with the switch attached.
4. Remove the wires connected to the switch.
5. Unscrew the lock washer and remove the switch.
6. Reverse the process when installing the new switch.
Replacement of the Drain Line
NOTE: To replace the vinyl drain line, it is necessary that
there be access to the rear of the cabinet.
1. On the cabinet exterior, remove the rear tubing cover
using a 1/4" nut driver.
2. On the interior of the cabinet, remove the drain line
cover.
3. From the inside of the cabinet, pull the drain from the
evaporator shroud fitting.
4. From the drain exit location, pull the drain through the
penetration of the cabinet.
5. At the bottom of the condensing unit compartment, cut
the drain line retaining strap. The drain line should
now be free.
6. To install the new drain line, reverse the process.
CHARGING THE REFRIGERATION SYSTEM i
1. Connect service gauges to the suction and discharge
service valves then open valves one full turn.
2. If the system is pressurized slightly, open both manifold
gauge valves and purge the service line gauges.
3. With manifold gauge valves closed, start refrigeration
system.
4. Attach a drum of refrigerant to the suction service side
of the manifold gauges and add refrigerant until the
liquid sight glass is clear of bubbles.
RECALIBRATING THE THERMOMETER
1. To recalibrate the thermometer, remove it from the
cabinet. Using a small, flat screwdriver, remove the
lens. Prepare an ice water bath and immerse the
thermometer bulb at least two inches into the ice bath.
Within 30 seconds the indicator dial should read 32
degrees Fahrenheit. If it does not, it needs to be
recalibrated. Do this by placing your index finger on
the opposite side of the needle that needs to move.
Then, using a flat screwdriver, turn the screw at the
center of the dial 1/4 of a turn in the direction you want
to move the dial. Repeat the procedure until the
needle is on 32 degrees. See Figure 4.1.
i If supplied with a condensing unit