2.04
components
Defrost Processing
The refrigeration units in the 320 cabinets are defrosted
by the refrigeration control system at regularly scheduled
intervals based on the Defrost Interval, starting from the
Defrost Time selected in MasterMenu™ . A defrost cycle
will begin with the compressor and condenser fan turned
off and the defrost heater on.The heater will remain on
until the Defrost Thermal switch indicates that the
temperature of the air around the refrigeration coils has
reached the desired temperature. The compressor will
then be turned on two minutes later. Normal refrigeration
processing then resumes. A Defrost cycle will also occur
75 minutes after the door is closed in a Frozen cabinet or
45 minutes after the door is closed in a Food cabinet. If
the cabinet is a Food cabinet and the compressor has not
yet reached Pull down, the Defrost cycle will be delayed
until it reaches Pull down. Another Defrost Cycle will occur
either 6 or 8 hours later where 6 or 8 is the number of
hours specified in the Defrost Interval field of the Setup
Defrost Menu Item in MasterMenu™ . If a scheduled
defrost is to occur before 4 hours after the Power Up
defrost is complete, it will be delayed until 4 hours after
the Power Up defrost is complete. All subsequent
scheduled defrosts will occur at their normal times.
Manual Forced Defrost
Enter Master Menu, Configuration Menu, Setup Defrost menu item for specific cabinet, Press F2, compressor will turn off
and a defrost cycle will begin following the sequence above.
Normal Temperature Operation:
With temperature set at -15°F, the following three conditions indicate a correctly operating refrigeration unit:
1) Unit should reach that temperature within 1 hour.
2) After reaching that temperature, Compressor On cycle should not exceed 35 minutes.
3) During a defrost cycle, cabinet temperature should not rise above 0°F.
Current Readings:
120V Operation
230V Operation
Stand-by 1.5A ± .5A .75A ± .5A
Compressor On 12A ± 1A 7A ± .5A
Defrost Cycle 7A ± .5A 2.5A ± .5A
Defrost Heater
Resistance 23 ohms ± 3 85 ohms ± 6
30
45˚
8-12
Summary of Contents for 310
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Page 46: ...5 01 310 control module cabinet ...
Page 48: ...5 03 310 control module door ...
Page 50: ...5 05 310 swing panel ...
Page 52: ...5 07 310 board and power box assembly 21 24 ...
Page 54: ...5 09 310 power supply box ...
Page 56: ...5 11 320 inside door ...
Page 58: ...5 13 320 thermal window 4 6 2 8 5 12 10 11 14 1 15 13 7 16 3 17 18 ...
Page 64: ...5 19 320 baffle door assembly 8 7 6 6 4 3 5 2 1 10 9 11 ...
Page 66: ...5 21 320 baffle motor assembly 7 8 9 6 5 20 5 19 12 3 2 1 4 18 17 15 16 14 13 11 10 ...
Page 68: ...5 23 320 refrigeration assembly and components 7 6 5 12 10 13 1 4 3 11 8 ...
Page 72: ...5 27 320 junction box side wall mount 14 21 9 2 4 1 17 7 20 6 3 8 5 19 15 ...
Page 74: ...5 29 320 8 select spiral shelf 18 16 17 10 9 11 16 13 14 12 11 9 10 1 15 8 3 2 7 5 4 6 ...
Page 76: ...5 31 320 conveyor shelf 7 4 5 14 13 17 12 10 8 9 6 11 16 2 16 3 1 15 ...
Page 78: ...5 33 320 conveyor module 1 5 4 6 13 14 16 8 7 11 12 17 3 12 20 9 15 2 8 18 19 10 16 ...
Page 80: ...5 35 310 trim Top Trim or Trim Insert Trim Outside Vertical Trim Lower Horizontal Bottom Trim ...
Page 82: ...5 37 310 panels Lower Panel Upper Panel Top Insert ...
Page 89: ...6 01 trouble shooting chart ...
Page 90: ...6 02 trouble shooting chart ...
Page 91: ...6 03 trouble shooting chart ...
Page 94: ...6 06 electrical connections ...
Page 95: ...6 07 electrical connections P7 Default Refrigeration Jumper HI Refrigerated LO Frozen ...
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