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4.6 Alarms management
4.6.1
Digital input alarms
ID
CODE LED
DESCRIPTION
High pressure alarm from pressure
HPI
ID1
L5
switch
Low pressure alarm from pressure
LPI
ID2
L6
switch
tP
ID3
L7
Pump thermal cutout alarm
Water tank low water level alarm / No
LL
ID4
L8
water fl ow
Compressor protection alarm /
PII
ID6
L9
Phases monitor
4.6.2
Allarmi da ingressi analogici
AI
CODE
DESCRIPTION
Tank water outlet water high tempera-
HAI
ture alarm
B1
Tank water outlet water low tempera-
LAI
ture alarm
StI
Sensor open circuit or short circuit
Evaporator water outlet water high
HA2
temperature alarm
B2
Evporator water outlet water low tem-
LA2
perature alarm
St2
Sensor open circuit or short circuit
HA3
High ambient temperature warning
LA3
B3
Low ambient temperature warning
St3
Sensor open circuit or short circuit
4.7 Automatic restart
In the event of a power failure, when power is restored the chiller will
assume theOn-Off statusheld at themoment the power was lost.
PCW040-160
5
Maintenance
a) The machine is designed and built to guarantee continuous opera-
tion; however, the life of its components depends on the mainte-
RESET
nance performed.
b) When requesting assistance or spare parts, identify the machine
M
(model and serial number) by reading the dataplate located on the
unit.
M
c) An example of this record sheet can be downloaded from the site:
www.polewr.com.
M
5.1 General instructions
A
!
Before performing any maintenance, make sure the power to the
refrigerator is disconnected.
M
Y
Always use the Manufacturer's original spare parts: otherwise the
Manufacturer is relieved of all liability regarding machine malfunction-
ing.
RESET
Y
In case of refrigerant leakage, contact qualifi ed and authorized
Warning
personnel.
Y
The Schrader valve must only be used in case of machine mal-
A
function: otherwise any damage caused by incorrect refrigerant charg-
ing will not be covered by the warranty.
M
5.2 Preventive maintenance
Warning
To guarantee lasting maximum chiller effi ciency and reliability, carry out:
Z
a)
every 6 months - clean the condenser fi ns and make sure
A
compressor electrical absorption is within the dataplate values;
Z
M
b)
kit for maintenance (par.7.5)
Warning
• kit for maintenance;
• service kit;
Warning
• individual spare parts.
M
5.3 Refrigerant
Z
Charging: any damage caused by incorrect charging carried out
by unauthorized personnel will not be covered by the warranty.
Y
At normal temperature and pressure, the R407C refrigerant is a
colourless gas classifi ed in SAFETY GROUP A1 - EN378 (group 2 fl uid
according to Directive PED 2014/68/EU);
GWP (Global Warming Potential) = 1774.
!
In case of refrigerant leakage, air the room.
5.4 Dismantling
The refrigerant and the lubricating oil contained in the circuit must be
recovered in conformity with current local environmental regulations.
%
frame and panels
steel/epoxy resin polyester
tank
aluminium/copper/steel
pipes/collectors
copper/aluminium/carbon steel
pipe insulation
NBR rubber
compressor
steel/copper/aluminium/oil
condensator
steel/copper/aluminium
pump
steel/cast iron/brass
fan
aluminium
refrigerant
R407C (HFC)
valve
brass/copper
electrical cable
copper/PVC
6/8
Recycling
Disposal
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