29
NOTE
The AXV is the LAST component to adjust in the
refrigeration system.
F.
The AXV can be adjusted after the steps above are
completed. When adjusting, do not turn the valve
over 1/4 turn (90°). Turn the valve stem clockwise
to decrease the evaporator pressure or
counterclockwise to increase the evaporator
pressure.
AXV REMOVAL
A.
Disconnect the machine from electrical supply
before removing any panels for servicing. Remove
the the front panel.
B.
Recover refrigerant charge per instructions in
Section 5.2.
C.
Leave the suction and discharge ports open to
prevent pressure buildup during AXV removal.
D.
Remove any insulation from the AXV and immediate
surrounding lines.
E.
Apply a heat sink (wet cloth) to the valve dome
(Figure 5-5).
F.
Unsweat the AXV and remove.
AXV REPLACEMENT
To replace the AXV, perform the following procedures:
A.
Position the AXV, with a heat sink, into the
system.
B.
With the suction and discharge ports open, braze
the AXV into the system.
C.
Remove the heat sink from the AXV.
E.
Replace insulation to the AXV and surrounding
lines.
F.
Replace the drier per the instructions in Section
5.9.
G.
Evacuate the system per the instructions in Section
5.2.
H.
Recharge the system per the instructions in Section
5.3.
B. CHECK VALVE
The machine has 3 magnetic check valves (Refer to Figure
5-6). Each valve is positioned in the suction line and
prevents backflow of refrigerant into the evaporator. If there
is reversed flow, the product in the freezing cylinder softens
and liquid refrigerant can flood into the compressor on
startup.
If a check valve needs to be replaced, use a heat sink (wet
cloth) when installing the new valve to prevent damage.
C. HIGH PRESSURE CUTOUT
The high pressure cutout stops the compressor in water
cooled machines if the discharge pressure reaches 445
psig.
HIGH PRESSURE CUTOUT TEST
A.
Connect a gauge to the Schrader valve on the
discharge line.
B.
Disconnect cooling by shutting off the water supply.
C.
High pressure cutout should trip when pressure
reaches 445 psig ±9.
HIGH PRESSURE CUTOUT REMOVAL
A.
Remove the left side and font panels.
B.
Recover refrigerant charge per instructions in
Section 5.2.
C.
Leave the suction and discharge ports open to
prevent pressure buildup during removal.
D.
Unsweat capillary tube from suction line.
E.
Disconnect terminals from high pressure cutout.
Figure 5-6 Check Valve
Figure 5-5 AXV Removal
Summary of Contents for Stoelting E131-OT2
Page 1: ...Model E131 OT2 F131 OT2 SERVICE MANUAL Manual No 513648 Rev 0 https appliancetechmanuals com ...
Page 2: ...https appliancetechmanuals com ...
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Page 16: ...10 https appliancetechmanuals com ...
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 ...
