1592001850 XC660D GB r3.4 04.09.2017.docx XC660D
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2ELP Electronic pressure switch threshold, compressor section circuit 2:
(-50°C÷STC2;
-58°F÷STC2; 3P04÷STC2); Pressure / Temperature value at which all the compressors
of second circuit are switched off. It has to be set some degrees above the mechanical
low pressure switch value, in order to prevent mechanical low pressure activation.
SEr: Service request:
(1÷999 hours, res. 10h; 0 = alarm excluded ) number of running hours
after
that the “A14” maintenance call is generated.
PEn: Low pressure-switch intervention numbers:
(0÷15). If the low pressure-switch is
enabled PEn times in the PEI interval, the controller is locked.
Only the manually
unlocking is possible
. See also the alarms table at paragraph 21.2. Every time the
pressure-switch is enabled all the compressor are turned off.
PEI:
Pressure-switch interventions time
(0÷255 min) Interval, linked to the Pen parameter,
for counting interventions of the low pressure-switch..
SPr
:
number of steps engaged with faulty probe
. (0÷6).
2PEn: Low pressure-switch intervention numbers for circuit 2:
(0÷15). If the low pressure-
switch is enabled 2PEn times in the 2PEI interval, the compressors of the second circuit
is locked.
Only the manually unlocking is possible
. See also the alarms table at
paragraph 21.2.
Every time the pressure-switch is enabled all the compressor are turned off.
2PEI: Pressure-switch interventions time for circuit 2
(0÷255 min) Interval, linked to the
2PEn parameter, for counting interventions of the low pressure-switch of circuit 2.
2SPr
:
Number of steps engaged with faulty probe of suction 2
. (0÷6).
PoPr Capacity engaged with faulty probe:
(0÷100%) it’s used only if CtyP=dPo.
17.9 Alarms
– fans section
LAF
:
Low pressure alarm
– fans section
: The measurement unit depends on the dEU
parameter: (FA04 ÷ HAF bar; -50.0÷HAF °C; FA04÷HAF PSI; -58÷HAF °F)
It’s
independent from the set point. When the value LAF is reached the LA2 alarm is enabled,
(possibly after the
AFd
delay time).
HAF
:
High pressure alarm
– fans section
: The measurement unit depends on the dEU
parameter: (LAF÷FA20 bar; LAF÷150.0 °C; LAF÷FA20 PSI; LAF÷302 °F).
It’s
independent from the set point. When the value HAF is reached the HA2 alarm is enabled,
(possibly after the
AFd
delay time).
AFd
:
Low and High pressure alarms delay
– fans section
: (0÷255 min) time interval
between the detection of a pressure alarm condition in the fans section and alarm
signaling.
HFC
Compressors off with high pressure (temperature) alarm for fans
no
= compressors are not influenced by this alarm
yES
= compressors are turned off in case of high pressure (temperature) alarm of fans
dHF
Interval between 2 compressors turning off in case of high pressure (temperature)
alarm for fans
(0 ÷ 255 sec)
PnF: High pressure-switch intervention numbers
– fans section:
(0÷15 with 0 the manually
unlocking is disabled) if the high pressure-switch is enabled PnF times in the PiF interval,
the controller is locked.
It can be unlocked only manually
. See paragraph 21.2. Every
time the pressure-switch is enabled all the compressors are turned off and all the fans
are turned on.
PiF:
Pressure-switch interventions time
– fans section
(0÷255 min) Interval, linked to the
PEn parameter, for counting interventions of the high pressure-switch..
FPr
Number of fans engaged with faulty probe
. (0÷#fans).
17.10 Suction superheat of circuit 1
ASH0 Differential for low superheat pre-alarm.
(
0.1 to 30.0°C/ 1 to 60°F).
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