11
English
2-7.  Checks to the refrigerating 
equipment
• 
Where electrical components are 
being changed, they shall be fi t 
for the purpose and to the correct 
specifi cation.
• 
At all times the manufacturer’s 
maintenance and service guidelines 
shall be followed.
• 
If in doubt consult the 
manufacturer’s technical department 
for assistance.
• 
The following checks shall be 
applied to installations using 
fl ammable refrigerants.
 -
The actual refrigerant charge 
is in accordance with the room 
size within which the refrigerant 
containing parts are installed. 
 -
The ventilation machinery and 
outlets are operating adequately 
and are not obstructed. 
 -
If an indirect refrigerating circuit is 
being used, the secondary circuit 
shall be checked for the presence 
of refrigerant.
 -
Marking to the equipment 
continues to be visible and legible. 
Markings and signs that are 
illegible shall be corrected.
 -
Refrigerating pipe or components 
are installed in a position where 
they are unlikely to be exposed to 
any substance which may corrode 
refrigerant containing components, 
unless the components are 
constructed of materials which 
are inherently resistant to being 
corroded or are properly protected 
against being so corroded.
2-8.  Checks to electrical devices
• 
Repair and maintenance to electrical 
components shall include initial 
safety checks and component 
inspection procedures.
• 
Initial safety checks shall include but 
not limit to:-
 -
That capacitors are discharged: 
this shall be done in a safe 
manner to avoid possibility of 
sparking. 
 -
That there no live electrical 
components and wiring are 
exposed while charging, 
recovering or purging the system. 
 -
That there is continuity of earth 
bonding.
• 
At all times the manufacturer’s 
maintenance and service guidelines 
shall be followed.
• 
If in doubt consult the 
manufacturer’s technical department 
for assistance.
• 
If a fault exists that could 
compromise safety, then no 
electrical supply shall be connected 
to the circuit until it is satisfactorily 
dealt with.
• 
If the fault cannot be corrected 
immediately but it is necessary to 
continue operation, an adequate 
temporary solution shall be used.
• 
The owner of the equipment must be 
informed or reported so all parties 
are advised thereinafter.
 
Safety Precautions