Service manual
Table Of Contents
- Important Safety Information
- I. Construction and Refrigeration Circuit Diagram
- II. Sequence of Operation and Service Diagnosis
- III. Controls and Adjustments
- IV. Refrigeration Circuit and Component Service Information
- V. Maintenance
- VI. Preparing the Appliance for Periods of Non-Use
- VII. Disposal
- VIII. Technical Information
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B. Service Diagnosis
WARNING
• The appliance should be diagnosed and repaired only by qualied service
personnel to reduce the risk of death, electric shock, serious injury, or re.
• Risk of electric shock. Use extreme caution and exercise safe electrical practices.
• Moving parts (e.g., fan blade) can crush and cut. Keep hands clear.
• Make sure all food zones are clean after the appliance is serviced.
• CRES: WARNING! A minimum of 4" (11 cm) clearance is required between the
bottom of the cooking equipment heating element and the appliance top.
• CRES: WARNING! Temperature at the appliance top must not exceed 180°F
(82°C). For optimum performance, installation of a heat shield (supplied by
others) is recommended.
• WARNING! For cooking equipment on the cabinet, do not exceed the total
maximum weight listed for your model.
Total Maximum Weight for Cooking Equipment on the Cabinet
CRES36 CRES49 CRES72 CRES85 CRES98
700 lb. (318 kg) 700 lb. (318 kg) 1,200 lb. (544 kg) 1,200 lb. (544 kg) 1,500 lb. (680 kg)
NOTICE
• The appliance is not intended for outdoor use.
• The appliance must not be located in a corrosive environment.
• Normal operating ambient temperature must be within:
CPT 45°F to 86°F (7°C to 30°C)
CRES 45°F to 100°F (7°C to 37.8°C)
• The appliance must not be located next to ovens, grills, or other high heat
producing equipment.
• The appliance must be a minimum of 1" (3 cm) from side walls.
• The factory-installed rear bumpers must be in place to ensure proper rear
clearance.
• CPT: A minimum of 10" (25 cm) clearance above the rail must be provided to allow
the rail cover to open.
The diagnostic procedure is a sequence check that allows you to diagnose the electrical
system and components. Before proceeding, check for correct installation and proper
voltage per nameplate. If the display is in alarm, see "III.D. Alarm Safeties."
Note: When checking voltage (115VAC), always choose a white (W) neutral wire to
establish a good neutral connection.
CPT Factory Default Temperature Settings:
a) Setpoint: 32°F (0°C).
b) Display Scale: °F.