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heatcraft-refrigeration-p h-im-79d User Manual

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Page of 36
3 5
Service Record
Date of Start-up
Location Address
CONDENSING UNIT
MODEL #
SERIAL #
COOLER UNIT
MODEL #
SERIAL #
FREEZER UNIT
MODEL #
SERIAL #
ELECTRICAL
•
Check Primary Supply voltage.
If 208 V, change transformer wiring in the
Cooler and Freezer to the 208 V tap
YES
• Check Compressor Amps for COOLER and
FREEZER compressors. Should match
nameplate.
YES
NO
PIPING
• Is suction line trapped at the Cooler?
YES
NO
• Is suction line trapped at the Freezer?
YES
NO
DRAIN LINES
• Are drain lines sloped properly?
YES
NO
• Is drain line trapped outside the Cooler?
YES
NO
• Is drain line trapped outside the Freezer?
YES
NO
• Is heat tape wrapped along entire length of
the drain line in the Freezer?
YES
NO
• Is heat tape plugged in and heating the drain
line?
YES
NO
INSULATION
• Are Liquid lines fully insulated?
YES
NO
• Are Suction lines fully insulated?
YES
NO
SETTINGS
• Check Beacon II board settings for the
following:
FREEZER
Refrigerant Type
R404A
Box Setpoint Temp.
-10
°
F.
Superheat
8
°
F.
No. of Defrost/Day
4
Defrost End Temp.
65
°
F.
COOLER
Refrigerant Type
R22
Box Setpoint Temp.
35
°
F.
Superheat
8
°
F.
No. of Defrost/Day
2
Defrost End Temp.
50
°
F.
SYSTEM CHECKS
• Check Compressor Superheat for the
COOLER (Should be between 20
°
F. & 30
°
F.)
YES
NO
• Check Compressor Superheat for the
FREEZER (Should be between 20
°
F. & 30
°
F.)
YES
NO
• Force unit into a Defrost Check heater amps.
Should match nameplate amps.
YES
NO
• Check LPS Time Delay Relays. Should be
set at 1 minute for both the COOLER and
FREEZER.
YES
NO
• Check Low Pressure Switch on FREEZER. Should
be set at 0 psig Cut-out/10 psig Cut-in.
YES
NO
• Did FREEZER and COOLER cycle off on LPS at
Setpoint Temperature?
YES
NO
• Is the sight glass free of bubbles?
YES
NO
• Are the COOLER and FREEZER fans at proper
speeds?
YES
NO
• Check system for refrigerant leaks. Are there any
leaks on the COOLER, FREEZER, CONDENSING
UNIT or INTERCONNECTING PIPING?
YES
NO
• Check system piping for unusual vibration or noise.
Is there any unusual vibration or noise on the
COOLER, FREEZER, CONDENSING UNIT or
INTERCONNECTING PIPING?
YES
NO
• Start the FREEZER only. Does the compressor
start and evaporator fans run for this FREEZER?
YES
NO