AERMEC nsb Bedienungsanleitung Seite 13

General description
The alarms are divided into three cate-
gories:
Report-only alarms (only reported
on display and buzzer, report on
display, buzzer, alarm relay)
Circuit alarms (de-activate the rela-
tive circuit only, report on display,
buzzer, alarm relay)
Serious alarm (de-activates all the
system circuits, report on display,
buzzer, alarm relay)
The alarms must all be considered of
the manual reset type, except those
where specified differently.
Report only alarms:
Unit maintenance alarm
Compressor maintenance alarm
Clock card broken or disconnected
alarm
Units disconnected from network
alarm With automatic resetting
Circuit alarms:
High pressure alarm
From transducer/pressure-switch
Setting may be set for a threshold
and differential of alarm from tran-
sducer
Low pressure alarm
From transducer/pressure-switch
Delayed at compressor starting and
by the defrost end bypassed during
and after the pumpdown cycle set-
tings may be set by bypass alarm
time by cp starting and defrost end
Setting may be set for a threshold
and differential of alarm from tran-
sducer
14
Alarms
Compressor thermal alarm
From digital input
AOil differential alarm
From digital input Delayed at acqui-
sition Setting may be set for the
acquisition delay time
Fan 1-2 thermal alarm
From digital input Immediate shut-
down of fan with manual restore
Anti-freeze alarm
From temperature probe Setting by
trip threshold and differential possi-
ble
Discharge gas temperature alarm
From temperature probe Setting by
trip threshold and differential possi-
ble
Pressure differential alarm
From pressure transducers Setting
by pressure difference trip threshold
setting by delay from compressor
start possible
Enabled probes broken or missing
alarm
probes or transducers with automa-
tic resetting
Anti-freeze evaporator gas alarm
From temperature probe Setting by
trip threshold and differential possi-
ble
Serious alarms
Missing water flow alarm
Missing water flow alarm From
digital input Setting by bypass
from pump start possible Setting by
acquisition of reading when in stea-
dy state possible
Serious alarm
da ingresso digitale
a riarmo automatico
Phase monitor alarm
Phase monitor alarm From digital
input With automatic resetting
Pump thermal alarm
From digital input
Water inlet probe missing/broken
From analog reading