Viking VCBB360R Service Manual page 39

Service Procedures
Replacement Service Compressor (continued)
•
Thermocouple tips should be attached securely
to specific locations.
•
Do not test during initial pull down. Allow one
off cycle or balanced temperature condition to
occur before proceeding with testing.
•
Refrigerator must operate minimum of 20
minutes after thermocouples are installed.
•
Turn control to colder to obtain required on time.
•
Wattage reading must be recorded in conjunction
with temperature
operation.
•
Suction and head pressure are listed on
"Temperature and
Normally these are not required for diagnosis but
used for conformation on system which have
been opened.
Brazing
To reduce risk of personal
injury or property damage,
take necessary precautions
temperature required for brazing.
Satisfactory results require cleanliness, experience,
and use of proper materials and equipment.
Connections to be brazed must be properly sized, free
on rough edges, and clean.
Generally accepted brazing materials are:
•
Copper to copper joints; SIL-FOS (alloy of
15% silver, 80% copper, and 5% phosphorous).
Use without flux.
temperature is approximately 1400°F. Do not
use for copper to steel connection.
•
Copper to steel joints; SILVER SOLDER
(alloy of 30% silver, 38% copper, 32% zinc).
Use with fluoride based flux.
brazing temperature is approximately 1200°F.
•
Steel to steel joints; SILVER SOLDER (See
copper to steel joints.)
•
Brass to copper joints; SILVER SOLDER (See
Copper to steel joints).
•
Brass to steel joints; SILVER SOLDER (See
copper to steel joints).
Checking Electric Heater Assembly
1. Disconnect power to unit.
2. Ensure heater element is cold, then remove
suspect heater visually inspect element for
obvious damage (breaks, cracks in element, etc.)
test to confirm proper
Relationship Chart".
against high
Recommended brazing
Recommended
3. Attach ohmmeter to element leads. Check for
continuity (see tech sheet for unit under test).
If element reads open (infinite or very high
resistance): replace element.
4. Check disc type thermostat for continuity (see
tech sheet for open and closed values). If open,
replace.
Door stop adjustment:
1. Remove center grille blade from top air grille.
2. Remove top air grille by removing (4) ¼" screws
with magnetic screwdriver.
forward.]
3. Open refrigerator door so door stop arm and
shoulder screw are accessible. Shoulder screws
should be in 110° door opening position.
4. Remove shoulder screw and place shoulder
screw in the 90° or 120° door opening position.
Hinge adjustment:
Verify proper door alignment. Wait until panels are
installed for door settlement. Only the top hinge is
adjustable.
Adjust top hinge by completing the following:
1. Remove air grille blade and air grille assembly.
2. Loosen top hinge screws.
3. Align refrigerator door by lifting.
4. Tighten screws.
5. Install air grille.
6. Replace air grille assembly.
39
Pull assembly