KGL Operating Manual – VS 3010 BS
2018-07-02
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Signal
Pump down
time
30 sec.
Defrost
time
10..30
min.
6
Disable of the message
LP-Z2 measuring loop error
5 minutes after opening the suction line
4.15.6 Sequence of the discharge gas defrosting of Z2 cold rooms
Signal
Lead
time
Drain
heater
5..30
min.
Pump down
time
30 sec.
Defrost
time
10..30
min.
1
Drain heater Z2 cold rooms
No lead time in the event of power failure during
the defrosting
2
SV 2.2/1 and SV 2.2/2 Close suction line
3
SV3.2/1, SV3.2/2 discharge gas feed and SV1
common discharge line
4
Defrost command to Z2 cold rooms via CAN bus
4.15.7 Course of the discharge gas defrosting Z1
Signal
Unload
to one
stage
Pump
down until
suction gas
pressure at
Low LP Z1
Defrost
10..30
min.
1
SV 2.2/1 and SV 2.2/2 Close suction
line
4 minutes monitoring time for the pump down
2
SV3.2/1, SV3.2/2 discharge gas feed
and SV1 common discharge line
Disable of the Z2 cold rooms for electrical defrost. For Z1
cases, defrost termination via temperature or defrost duration.
3
Defrost command to Z1/2 cases via
CAN bus
4
Toggle setpoint Z2 circuit (no shift)
AL 300/CI 3000/CI4000 show an before the t0-Z2 setpoint
A
in the overview
5
Forced cooling of all Z2 cases via CAN
bus
6
Disable of the message
LP-Z1
measuring loop error
5 minutes after opening the suction line