GB - 11
38GLS…G / 38YL-…G Puron
ENGLISH
Unit maintenance
The following maintenance operations must be carried out by
qualified personnel.
Cleaning the coil
When necessary, proceed as follows for more careful cleaning of
the coil:
Switch the mains supply OFF.
Remove unit top cover by loosening holding screws and lifting
the cover.
Carefully clean the coil with a vacuum cleaner from inside to outside.
With the same vacuum cleaner, dust the inside of the fan
compartment and the fan blades. Avoid any damage to the blades
which may cause future vibrations and noise.
Replace the unit cover and tighten the screws.
After long shutdown periods and at commissioning
(for heat pump models only)
Energize the system by putting the main switch to ON without
starting the unit. (Remote control must be in the OFF position).
Do not disconnect the main switch during the unit operating season.
Check the refrigerant charge and unit maintenance
Refrigerant charge control
Heat pump unit
Cooling only unit
Cooling cycle
Heating cycle
Gas
Liquid + Gas
Liquid
Te
Ta
2
4
5
6
7
7
8
10
3
1
17
18
Te
Ta
2
11
6
14
16
18
10
15
12
4
7
5
7
17
8
13
Legend:
햲 Outdoor coil
햳 Compressor
햴 Metering device
햵 Strainer
햶 Vapor valve
햷 Liquid valve
햸 Service pressure port
햹 Additional pressure port
햻 Indoor unit coil
햽 Liquid distributor
햾 Cooling metering device
햿 Heating metering device
헀 Additional suction accumulator
헁 Reversing valve
헂 Outdoor coil sensor
헃 Crankcase heater
헄 Discharge muffler
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