Refrigeration Service Operations (Rev 6/98)
84
FILTER DRIER
Removal
1.
Pump down the refrigeration system and equalize the
pressure to slightly positive.
2.
Disconnect the nuts at the ends of the drier.
3.
Loosen the mounting hardware and remove the drier.
Installation
1.
Place the new O-rings in the ORS fittings on the ends
of the drier.
2.
Install the new drier and tighten the mounting screws
and nuts.
3.
Install and tighten the inlet nut. Hold the drier with a
back-up wrench on the hex behind the inlet fitting.
4.
Release a small amount of refrigerant to purge the air
through the drier. Then tighten the outlet nut.
5.
Pressurize the system and inspect for leaks. If no leaks
are found, open the refrigeration valves and place the
unit in operation.
EXPANSION VALVE ASSEMBLY
Removal
1.
Pump down the low side and equalize the pressure to
slightly positive.
2.
Open the left side door and remove both evaporator
access doors.
3.
Remove the feeler bulb from the clamp. Note the posi-
tion of the feeler bulb on the suction line.
4.
Disconnect the equalizer line from the suction line.
5.
Disconnect the inlet liquid line and unsolder the distrib-
utor from the expansion valve.
6.
Remove the expansion valve mounting bolt and remove
the expansion valve from the unit.
Installation
1.
Install and bolt the expansion valve assembly in the
unit.
2.
Connect the inlet liquid line and solder the distributor
to the expansion valve.
3.
Connect the equalizer line to the suction line.
4.
Clean the suction line to a bright polished condition.
Install the feeler bulb clamps and the feeler bulb on the
side of the suction line in its former position. The feeler
bulb must make good contact with the suction line or
operation will be faulty. Wrap with insulating tape.
5.
Pressurize the low side and test for leaks. If no leaks are
found, evacuate the low side.
6.
Replace the evaporator access doors.
7.
Open the refrigeration valves and place the unit in oper-
ation.
8.
Test the unit to see that the expansion valve is properly
installed.
Location of Expansion Valve Bulb
Summary of Contents for Super II SR+
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Page 10: ...ii ...
Page 14: ...4 ...
Page 22: ...Unit Description Rev 6 98 12 Front View AEA1350 ...
Page 23: ...Unit Description Rev 6 98 13 Right Side Door Open AEA1351 ...
Page 24: ...Unit Description Rev 6 98 14 Left Side Doors Open AEA1352 ...
Page 26: ...Operating Instructions Rev 6 98 16 Control Box Cover AEA1354 ...
Page 34: ...24 ...
Page 42: ...Electronic Controls Rev 6 98 32 SOFTWARE REVISION 04XX ALARMS AEA1358 ...
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Page 141: ...131 Schematic Diagram SBIII SII RMNII 30 SR MPIV ...
Page 142: ...132 Wiring Diagram SII SBIII RMN30 SR MPIV Page 1 of 4 ...
Page 143: ...133 Wiring Diagram SII SBIII RMN30 SR MPIV Page 2 of 4 ...
Page 144: ...134 Wiring Diagram SII SBIII RMN30 SR MPIV Page 3 of 4 ...
Page 145: ...135 Wiring Diagram SII SBIII RMN30 SR MPIV page 4 of 4 ...