Sanyo MDF-393, Руководство по обслуживанию

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9. Control of compressor
Differential temperatures
When chamber temp. is set temp. -0.4
㷄
: H side compressor turns on.
When chamber temp. is set temp. -1.6
㷄
: Both H/L side compressors turn off.
: L side compressor turns on.
When H side compressor turns on
and cascade temp. is -34
㷄
: 1min.
Interval of H/L compressor ON
*Note) L side compressor turns on only when cascade temperature is reached to -34 㷄 after 1
minute elapse since H side compressor was turned on.
<Compressor control during cycle operation>
Chamber temp.
=Set temp. -0.4
More than1min Chamber temp. More than1min
Chamber temp
.= 䌓 et temp.-1.4
Cascade
temp.=-34
㷄
More than 3min
䋨
Comp. delay
䋩
=Set temp. -0.
䋴
Chamber temp
More than 3min
.=
䌓
et temp.-1.4
䋨 Comp. delay 䋩
Cascade
temp.=-34
㷄
Set temp.
Chamber
Temp.
Set temp -0.4 㷄
䌓 et temp.-1.4 㷄
Cascade
Cascade temp
temp. .=-34 㷄
ON
䌈
OFF
ON
䌌
OFF
L Comp. ON
H/L Comp. OFF L Comp. ON
H/L Comp. OFF
H Comp. H Comp.
ON
ON
H side compressor protection:
H side compressor is turned off to prevent the compressor being warmed up that is caused by
the fan motor locked.
Filter sensor temperature:
The High side compressor is turned off when the filter sensor temperature is equal or higher
than 60
㷄
. The High side compressor is turned on again when the filter sensor temperature is
equal or lower than ambient tempe10
㷄
.
10. Delay time
Compressor delay time (Initial: 3 minutes)
When the compressor seizes during cycle operation, both L/H side compressors restart with
the delay time. You can choose delay time in F05.
Power failure alarm delay time (About 3 seconds, fixed)
When the power is failed, the power failure alarm activates with about 3 seconds of delay.
The delay time is fixed.
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