Maintenance; General Instructions; Refrigerant; Preventive Maintenance Programme - Parker 250 Manuel D'utilisation

6

Maintenance

a) The machine is designed and built to guarantee continuous opera-
tion; however, the life of its components depends on the maintenance
performed;
b) when requesting assistance or spare parts, identify the machine
(model and serial number) by reading the data plate located on the
unit.
c) An example of this record sheet can be downloaded from the site:
www.polewr.com.

6.1 General instructions

!
Before any maintenance, make sure:
• the pneumatic circuit is no longer pressurized;
• the dryer is disconnected from the main power supply
Y
. Always use the Manufacturer's original spare parts: otherwise the
Manufacturer is relieved of all liability regarding machine malfunctioning
Y
In case of refrigerant leakage, contact qualifi ed and authorized per-
sonnel.
Y
The Schrader valve must only be used in case of machine malfunc-
tion: otherwise any damage caused by incorrect refrigerant charging will
not be covered by the warranty.

6.2 Refrigerant.

Charging: any damage caused by incorrect refrigerant replacement car-
ried out by unauthorized personnel will not be covered by the warranty.
Z
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) = 1652,5.
!
In case of refrigerant leakage, ventilate the room.
English

6.3 Preventive Maintenance Programme

To guarantee lasting maximum dryer effi ciency and reliability
Maintenance Maintenance Interval
Activity Description (standard operating condi-
Activity
Check Service
Check POWER ON indicator is lit.
Check control panel indicators.
Check condensate drain.
Clean condenser fi ns.
Check electrical absorption.
Check refrigerant leaks.
Depressurize the dryer. Complete
drain maintenance.
Depressurize the dryer. Replace pre-
and post-fi lter elements.
Check temperature sensors.
Replace if necessary.
Dryer maintenance kit.
The following are available (see par. 8.4):
• maintenance kit
• service kit
• individual spare parts.
250

6.4 Dismantling

The refrigerant and the lubricating oil contained in the circuit must be
recovered in conformity with current local environmental regulations.
%
tions)
structural work
exchanger
pipes/headers
drain
exchanger insulation
pipe insulation
compressor
condenser
refrigerant
valves
electrical cables
Z
Recycling Disposal
steel/epoxy-polyester resins
aluminium
copper/aluminium/carbon steel
polyamide
EPS (sintered polystyrene)
synthetic rubber
steel/copper/aluminium/oil
steel/copper/aluminium
R407c
brass
copper/PVC
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