Checks, Regulations And Adjustments; Starting; Wiring; Maintenance And Repairs - Zanotti AS Rotary Manual De Uso Y Mantenimiento

WARNING
Loads connected to the normally closed contacts of the relays are always
supplied and under voltage, even if the instrument is in stand by mode.
Alarms and signals
Probe alarms "P1" and "P2" start some seconds after the fault in the related probe; they automatically stop some
seconds after the probe restarts normal operation. Check connections before replacing the probe.
Temperature alarms "HA" and "LA" automatically stop as soon as the thermostat temperature returns to normal
values and when defrost starts.
9

Checks, regulations and adjustments

9.1

Starting

1) Connect the supply cable to the unit plug: on the panel the light of the " B "switch will turn on
indicating supply connection.
2) The unit is now pre-heating. We advise to keep the unit at this stage for at least 2 hours.
3) After pre-heating press the "B" (2) switch to position 1: the unit is now working.
N.B.: Each time mains supply is turned off for more than 24 hours, it is necessary to repeat the pre-
heating stage to restart the unit.
ATTENTION
24 hours after starting check evaporator state. If ice has formed, defrost frequency should
be increased. In low temperature units the evaporator condition should be checked every
week during the first month of operation.
10.

Wiring

A wiring diagram, specific for the units of the AS series, is enclosed with these use and
maintenance instructions.
11.

Maintenance and repairs

Suitable maintenance is crucial for obtaining longer life, perfect working conditions and high
efficiency of the unit as well as for ensuring the safety features provided by the manufacturer.
12

Routine maintenance

Good operation of the unit requires the condenser to be cleaned periodically (frequency of
cleaning depends on the environment where the unit is installed).
Turn off the unit and clean it by blowing air from the inside outwards. Should no air jet be
available, use a long-haired brush and work on the outside of the condenser.
Message
"P1"
"P2"
"HA"
"LA"
"dA"
Before turning the unit on, check that:
- locking screws are tight
- electrical connections have been carried out correctly.
In the event that the unit has been opened:
- no tools were left inside
- assembly is correct
- there are no gas leaks
- front cover is secured correctly
Cause
Room probe failure
Evaporator probe failure
Maximum temperature alarm
Minimum temperature alarm
Door open
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