Massive Contamination; Rehinging Door; Door Adjustment - Traulsen UHT48 Service Manual

VI. SERVICE PROCEDURES & ADJUSTMENTS (cont'd)
WARNING: CERTAIN PROCEDURES IN THIS SECTION REQUIRE ELECTRICAL TEST OR MEASUREMENTS WHILE
POWER IS APPLIED TO THE MACHINE. EXERCISE EXTREME CAUTION AT ALL TIMES. IF TEST POINTS ARE
NOT EASILY ACCESSIBLE, DISCONNECT POWER, ATTACH TEST EQUIPMENT AND REAPPLY POWER TO TEST.
VI. g - SYSTEM CLEAN UP/INTRODUCTION (cont'd):

MASSIVE CONTAMINATION

The replacement compressor MUST NOT be installed
until after system clean-up procedures have been com-
pleted.
1) Remove the burned-out compressor as outlined
under "COMPRESSOR" in "Section V. m".
2) Remove the capillary tube and drier.
3) Purge nitrogen through the high and low sides of
system until moisture and contaminated oil has been
removed from the remaining components of the sys-
tem.
4) Reassemble refrigeration system and add an CW052
style liquid drier and a suction line drier.
5) Purge nitrogen through the high and low sides of
system for 5 minutes.
6) Evacuate refrigeration as outlined under "EVACU-
ATING SYSTEM" for 30 minutes. Repeat nitrogen
purge and evacuation two more times.
7) Charge system as outlined under "CHARGING SYS-
TEM". Allow for the increased liquid capacity of the
liquid line drier.
8) Reconnect power and check for proper operation.
9) Disconnect power and install any panels removed.
10) Return between 24 and 48 hours to recover gas,
replace liquid line drier with a CW032 style drier. Re-
move the suction drier, but do not replace.
11) Evacuate and charge system as outlined under
"EVACUATING SYSTEM" and "CHARGING SYSTEM".
VI. h - DOOR ADJUSTMENT:
WARNING: UNPLUG UNIT BEFORE SERVICING.
1) Open the door and loosen the hinge plate screws
enough to move the hinges if desired, but the door is
still held in place.
2) Center the door in the opening.
3) Level the top hinge plate and tighten the screws.
4) Level the lower hinge plate and tighten the screws.
VI. i - REHINGING DOOR:
WARNING: UNPLUG UNIT BEFORE SERVICING.
1) Remove the door as outlined in "Section V. e."
2) Remove the hinge plate pin and plastic bushing from
the top hinge plate.
3) Remove the top hinge plate from the cabinet and
set aside for use as the lower hinge plate.
4) Remove the plug button from the top of the door.
5) Lay the door face down on a padded flat surface.
6) Remove the screw that secures the bottom hinge
plate to the hinge mechanism and set aside for use as
the top hinge plate.
7) Remove the hinge mechanism, filler screws and
square plug from the bottom of the door.
8) Remove enough foam from the new location of the
hinge mechanism to allow for insertion of the hinge
mechanism without compressing the foam.
9) Install the hinge mechanism into the bottom of the
door where the square plug was removed and install
the plug and filler screws in the remaing locations.
10) Use the hinge plate to turn the hinge mechanism
past the point of being spring loaded. This will allow
the stem to be inserted into the square hole in the hinge
plate. For LH hinge, turn clockwise or for RH hinge,
turn counterclockwise.
11) Install the plastic bushing, the spring and the sec-
ond plastic bushing on the hinge mechanism stem.
Attach the hinge plate to the hinge mechanism. NOTE:
The lockwasher is critical and must be installed.
12) Remove the plastic buttons (turn counterclockwise,
do not pull) from the hinge plate mounting positions
on the opposite side of the cabinet.
13) Install the top hinge plate to the cabinet.
14) Install the plug button and hinge plate pin in the
top of the door.
15) Install the door as outlined under "DOOR" in "RE-
MOVAL AND REPLACMENT OF PARTS."
16) Adjust the door as outlined under "DOOR ADJUST-
MENT."
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