Zanotti uniblock SB-SP O Instructions page 10

rL
: MINIMUM TEMPERATURE MEASURED DURING rt.
Shows the minimum temperature measured by the environment probe during the time interval rt.
c0
: DELAY AFTER RESET
It delays the compressor and fan activation after the power on of the device, so to dispose the
power consumption. It also protects the compressor against repeated activations in case of
power loss.
During the delay after reset the compressor LED blinks if the compressor should be activated.
During this interval the fan LED blinks in any case.
c1
: MINIMUM TIME BETWEEN TWO COMPRESSOR POWER-ONs
It defines the minimum time to pass between two compressor activations ( it also defines the
number of activations per hour ).
The start delay after reset is defined by the previous parameter.
c2
: OFF MINIMUM TIME
It defines the time during which the compressor must be OFF after its deactivation.
c3
: ON MINIMUM TIME
It defines the minimum time the compressor must be on after its activation.
c4
: SECURITY RELAY
If the regulation probe faulty alarm becomes active, the ON time of the compressor is put to zero,
and the compressor stays active for the time c4. The OFF time of the compressor is fixed to 15
minutes ( the compressor LED blinks ). Fan act following the related parameters.
If the machine is in defrost or in continous cycle when an alarm for the regulation probe arises, the
device irreversibly exits the procedures.
If the probe alarm stops, the device comes back to the standard operation mode ( not the
operation mode it was in before the alarm ). If the compressor is OFF, a minimum OFF time is
inserted ; if it is ON, a minimum ON time is inserted.
If c4 = 0 the compressor is always OFF, if c4=100 the compressor is always ON.
DEFROST SETTINGS
d0
: DEFROST TYPE
It defines the defrost tyep ( 0=resistor, 1=heating gas, 2=resistor with time-out,3=heating gas with time-out )
If a time-based defrost is selected, the value measured by the defrost probe is ignored during defrost. Ed
alarm is never activated.
If the defrost probe results faulty, the E1 error is not displayed ( it is then possible not to connect the probe ).
dI
: DEFROST INTERVAL
Defrost is executed when this parameter time-outs. If the time is 0, defrost is never executed
(exception are a manual defrost or a defrost driven by a digital input ).
During defrost, the temperature alarms are disabled.
dt
: DEFROST-END SET-POINT
In the devices where the defrost-end temperature probe is installed, this parameter defines the defrost-
end evaporator temperature. This operation mode is active if the time-based defrost is not selected.
If the evaporator temperature is greater than the defrost-end set point when a defrost should be
started, the defrost is skipped.
In any case the defrost is stopped when the dP time finishes. This event is shown displaying the Ed
message ( defrost stopped for time-out ), if Ed message is not disabled.
dP
: DEFROST TIME
It defines the maximum duration of defrost.
In the devices where the defrost-end probe is present, or in the case where the time-based defrost
is not selected, this parameter represents the defrost time.
d4
: AFTER-RESET DEFROST
It allows to activate a defrost cycle when the device is turned-on.
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