Profroid QUIETOR GQH ZB190 T5TWIN H N P Notice D'instructions page 31

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MAINTENANCE
Warning, this apparatus restart automatically.
Before any intervention on apparatus, operator must put a deposit on main switch of apparatus.
OPERATING INSTRUCTIONS FOR MAINTENANCE
For all maintenance operations, the following instructions must be followed:
- Unit door must only be opened after the main switch has been cut-off and the fans have stopped completely.
- The safety HP and LP switches, fans speed control and control LP switch can be accessed when the door is opened.
- Then, access to pressure plug for connecting the pressure gauge is possible. Pressure gauge cables go across holes on the housing.
Following these instructions allows unit tests to be carried out with the door closed while ensuring operators' safety as well as the correct
running of the device avoiding any air by-pass phenomenon.
RECOMMENDATIONS
If the unit is stopped for long periods of time, the fan motors should be run for at least two hours each week.
. Every month:
Carry out an operating check on:
- Pressures and temperatures in the compressor,
- Intensity in compressors and fan motors,
- Safety cut-off points of HP/LP safety pressure switches,
- Good functioning of remote electronic controller (condensing control),
- Oil levels,
- Moisture in the circuits (through sight-glass or by analysing oil),
- Check for leaks in the refrigeration circuit,
- Cleanliness ofcoil,
- Position of rotors in ferrules ( tightness on shaft, state of blades, ...).
.Every year:
- Carry out analysis ofoil
- Clean thecondenser.
Instructions or recommendations appearing in the various technical advice notes and manufacturer's service manuals should be followed
precisely ; please contact our Technical Department for any additional information
CLEANING
Coils should preferably be cleaned with:
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Compressed air
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By brushing with non-metallic materials
Avoid all aggressive detergents which may cause eventual corrosion.
FAN MOTOR CHANGE
This operation can only be undertaken once the electrical supply has been switched off (put a deposit on main switch). The access flaps
can only be opened when this is the case.
PROTECTION OF COMPRESSOR
In the case of compressor protection is ensured by fuses 14*51 : fuses must have obligatory a mechanical system in view to cut the compressor
supply.
REPLACEMENT PARTS
References of replacement parts are given by After sales department (33 04 42 18 05 00).
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