GENERAL OPERATING/WARRANTY MANUAL FOR CHILLER, FREEZER AND HEATED DISPLAY CABINETS
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3.1.8.3 If no more command is given within 5 seconds or press
[
SET
]
button, parameter will
be saved automatically and return to indoor temperature showing.
3.2 Function:
3.2.1 Operation of compressor:
3.2.1.1 When indoor temperature ≤ “tS”, compressor OFF: when indoor temperature ≥
(“tS”+“td”), compressor On: If the time of AC delay doesn’t arrive, compressor
OFF.
3.2.1.2 When the compressor stops, it starts to count the time of AC.
3.2.1.3 When the power supply, the compressor will delay at least one minutes to start.
(When AC=0)
3.2.1.4 During defrost time, please refer to Manual 3.2.2 about the defrost operation.
3.2.1.5 Break down operation: When E1,E2,E4,EE, the compressor starts according to
“Cr” time and operates automatically according to “CS” stopped time.
3.2.2 Manual defrost:
3.2.2.1 Calculation of defrost:
3.2.2.1.1 When the controller turns on, the first defrost period will not defrost. The
defrost will be re-calculated and start on the second period. (for example: if
“dF” sets 6 hours, the cycle of defrost will be started on the 6th hour.)
3.2.2.1.2 When the time arrives “dF” the defrost mode starts (defrost automatically): if
it is already in the manual defrost condition, the defrost time will not be
recalculated.
3.2.2.1.3 Defrost manually (in normal mode, press
[▲] and [
▼
] button for 3 seconds in
the meantime) can enter/end the defrost mode manually. It will not affect the
calculation of defrost cycle.
3.2.2.1.4 If the controller breaks down or alarms, the defrost cycle will not be affected.
3.2.2.1.5 After amending “dF”, the new setting value will be loaded in next cycle: after
amending “dt”, “dt” becomes effectively, if you miss to set the defrost during
the defrost automatically cycle or “dt” setting, it will be loaded in next cycle.
3.2.2.2 Defrost operation:
3.2.2.2.1 Electrical heating defrost : dO=0.
3.2.2.2.1.1 During the defrost mode, dt time starts to calculate, compressor Off,
fan Off, electrical heater On - and defrost light On.
3.2.2.2.1.2 When the temperature of evaporator ≥ “dS” (during the defrost mode),
electrical heater Off, the delay protection is 25 seconds : until the
temperature of evaporator < “dS” - the delay protection ends - electrical
heater On.
3.2.2.2.1.3 When “dt” time ends - electrical heater Off.
3.2.2.2.2 Hot gas defrost : dO=1
3.2.2.2.2.1 When it starts to defrost, dt time starts to calculate, compressor Off, fan
Off, after 30 seconds the four way valve On, and than after 30 seconds,
compressor On.
3.2.2.2.2.2 When the temperature of evaporator ≥ “dS” during the defrost cycle,
compressor Off, enter to 1 minute delay protection : until evaporator
temperature <”dS”, the delay protection ends, compressor On.
3.2.2.2.2.3 When “dt” time ends, compressor Off, after 30 seconds the four way
valve Off.
3.2.2.3 End of defrost :When “dt” time ends - it starts to calculate the drop period (“dr”) (If
dO=1 and AC=0, it enters to compressor protection for 30 seconds),
after drop period ends, it returns to normal operation mode : When the
drop period not finish, compressor operates.
3.2.2.4 Defrost temp. locked (“dL”)
3.2.2.4.1 When “dL”=0, after entering the defrost mode, indoor temperature shows
normally.
3.2.2.4.2 When “dL”=1, after entering the defrost mode, indoor temperature reaches
the entered defrost temperature : After finishing defrost, if indoor
temperature detection ≤ set point (“tS”) it will restore to show the normal
indoor temperature.
3.2.3 Fan operation:
3.2.3.1 During the defrost time, fan Off.
3.2.3.2 When evaporator temperature ≥ fan stopper temp. (“Ft”), fan Off.
3.2.3.3 When the drop period not finish, fan Off.
3.2.3.4 Fan select “FC”=0, the compressor will ON/OFF refer to fan.
3.2.3.5 Fan select “FC”=1, fan operates continually ON.
3.2.4 Memory shut down: When the shut down happens during the operation, after power restores,
the system will operate refer to the parameter value before shut down. (the memory doesn’t
include the defrost condition/cycle).
RS-311E Operational Manual
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