Friulinox REACH-IN BLAST, Service Manual

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FRIULINOX ALI GROUP S.R.L. A SOCIO UNICO
70 Translation of the original instructions
Via Treviso 4, 33083 Taiedo di Chions (PN) - Italy
Service
M
an
u
al
10.1.1. Chamber Probe Alarm
A probe failure triggers a Camera Probe Alarm and the buzzer and alarm relay are activated.
With the Faulty Camera Probe, however, it is possible to start or continue a program of:
•
Timed Blast Chilling (the Compressor is checked on the Needle Probe with a delta Conf44 with respect to the SetPoint, as the
measurement on the Needle Probe is colder than on the Chamber Probe).
•
Temperature Blast Chilling not yet started switches to Time at Start.
•
Temperature Blast Chilling in progress, switches to Time if the Needle Probe is not inserted. The Compressor is checked on the
Needle Probe instead of on the Cell Probe.
•
Temperature Blast Chilling in progress with the Needle Probe inserted, switches the compressor on and off based on the set
times (
Conf65 , Conf66 if with positive cycles, or with Conf67 , Conf68 if with negative cycles)
see
par.
4.1
see
par.
8.2.2
see
par.
8.1.2
see
par.
4.5
par. 8.2.2
see
par.
4.5
par. 8.1.2
The alarm may be caused by the interrupted cell probe or out of calibration or by the card analogue input
Access the electronic card where the “B1” cell probe is connected
Check the probe connection to the card
If the connection is loose, connect the probe again and check that the alarm does not appear on display
If there is oxide on the connection, remove it and check that the alarm disappears
If the alarm remains, invert the B1 cell probe with the “B2” evaporator probe
If the “ Evaporator Probe Alarm ” flashes on the display, the “B1” air probe is faulty
→
replace the probe
If by inverting the B1 cell probe with the “B2” evaporator probe the alarm remains, it means that the problem is
the analogue input of the electronic card
→
replace the card
It is possible to identify the cause of the alarm by checking the probe with the multimeter
If, with multimeter set in Ω , the probe is interrupted or the resistive value is not within the range
of use (see tab. PTC)
→
replace the probe
If, with multimeter set in Ω , the resistive value of the probe matches the temperature inside the
chamber (see tab. PTC)
→
replace the card