28
C. COMPRESSOR INSTALLATION
A.
Make sure the machine is disconnected from the
electrical supply before removing any panels for
servicing.
B.
Install the four rubber mounts on the compressor.
C.
Install the compressor into the machine, fitting the
base over the four bolt holes.
D.
Install the four washers and nuts onto the bolts and
tighten securely.
E.
Remove all tubing plugs from the replacement
compressor.
NOTE
The compressor plugs protect the compressor from
moisture in the air. Do not remove the plugs until
you are ready to install. The compressor must not
be opened to the atmosphere for more than 10 min-
utes.
F.
Leave the suction and discharge ports open to
prevent pressure buildup. Braze the suction and
discharge line to the compressor.
G.
Connect the wires to the compressor terminals.
H.
Replace the drier per the instructions in Section
5.9.
I.
Evacuate the system per the instructions in Section
5.2
J.
Recharge the system per the instructions in Section
5.3.
K.
Replace the insulating tubing on the suction line.
5.5 CONDENSER
The E131 and F131 come with either an air-cooled or a
water-cooled condenser. The capacity of the machine is
directly related to keeping the condenser clean and free of
debris.
The air-cooled condenser is a copper tube and aluminum fin
type. The machine must have a minimum of 3” of clearance
on both sides for proper air flow.
The water-cooled condenser is a tube and shell type. This
condenser requires cool, clean water to function properly.
Inlet and discharge lines must be 3/8” ID minimum.
CONDENSER TESTING
The condenser can be checked for leaks using the bubble
test or using a leak detector.
5.6 VALVES
A. AUTOMATIC EXPANSION VALVE (AXV)
The Automatic Expansion Valve (AXV) is used to meter the
refrigerant to the freezing cylinder evaporator. It does so by
maintaining a constant pressure in the evaporator. The self-
regulating AXV is preset by the manufacturer and adjust-
ment is not recommended. Figure 5-4.
AXV TESTING & ADJUSTMENT
When testing an AXV, isolate the evaporator from the other
evaporators:
To test the left side AXV, place the right side freezing
cylinder switch in the OFF position and disconnect the
solenoid for the hopper evaporator.
If checking the right side AXV, place the left side freezing
cylinder in the OFF position.
A.
Connect a gauge to the Schrader valve on the
suction line next to the evaporator.
B.
Connect a thermocouple to the suction line next to
the evaporator.
C.
Immediately before the refrigeration cycle ends,
the gauge should read 22-24 psig. This reading is
based on a full load in the freezing cylinder and an
ambient temperature of 70ºF.
D.
If the pressure reading is higher than expected,
check to see if there is an overcharge of refrigerant.
E.
If the pressure reading is lower than expected,
check to see if there is a low refrigerant charge or
if there is a restriction in the system.
Figure 5-4 AXV
Summary of Contents for Stoelting E131-OT2
Page 1: ...Model E131 OT2 F131 OT2 SERVICE MANUAL Manual No 513648 Rev 0 https appliancetechmanuals com ...
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Page 26: ...20 Figure 4 2 IntelliTec Control Menu Settings https appliancetechmanuals com ...
Page 52: ...46 8 2 AUGER SHAFT AND FACEPLATE PARTS https appliancetechmanuals com ...
Page 60: ...54 8 9 REFRIGERATION DIAGRAM WIRING DIAGRAM 01 2 3 3 3 3 https appliancetechmanuals com ...
