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English
Please read this booklet carefully.
It has been produced to provide details and advice on the correct method of installing and
using this unit so as to maximise reliability, efficiency and long life.
DESCRIPTION
The GM units are a series of air cooled (water cooled available as an option) condensing
units built on the monoblock principle. They consist of:
-
condensing unit (on outside of cold room)
-
evaporating unit (on inside of cold room)
-
control panel, fitted to condensing unit
OPERATING PRINCIPLE
The GM series are refrigeration units incorporating hermetic compressors powered by
electrical mains supply (single or three phase) and using HFC or HCFC refrigerant.
The refrigerant is pumped through the evaporator inside the room where it absorbs heat
thereby cooling the cold room. The refrigerant then passes to the condenser where the
absorbed heat is dissipated into the ambient air giving back its refrigerating capacity. The
cycle is then repeated.
There is also an automatic defrosting phase which is pre-programmed but adjustable by
the user. Its frequency is cyclic.
INSTALLATION
For a correct installation please read :
3.1
Mounting of unit on the cold room
3.2
Fitting remote panel (optional)
3.3
Electrical connection
3.4
Water connection (in the case of a water cooled condenser)
In order to obtain optimum functioning of the unit ensure the following :-
A)
Position the unit in a well ventilated location and away from other heat
sources
B)
Limit the number of door openings
C)
Ensure the unit has a good fresh air supply to the suction side (front) and a
good removal of air from the discharge side (top)
D)
Fit a drain line to the defrost water drain connection inside the condensing
unit
N.B. For GM 1-2-3 models fitted with automatic evaporation of defrost water this is
76-504-0914
just a precaution in case of overflow.
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