Kolin KAG-110RSINV, User Manual, Page: 26 / 31

should be kept sufficiently far away from the site of installation, repairing, removing
and disposal, during which flammable refrigerant can possibly be released to the
surrounding space. Prior to work taking place, the area around the equipment is to
be surveyed to make sure that there are no flammable hazards or ignition risks. No
smoking signs shall be displayed.
•
Ventilated area
Ensure that the area is in the open or that it is adequately ventilated before
breaking into the system or conducting any hot work. A degree of ventilation shall
continue during the period that the work is carried out. The ventilation should safely
dispense any released refrigerant and preferable expel it externally into the
atmosphere.
•
Checks to the refrigeration equipment
Where electrical components are being changed, they shall be fit for the
purpose and to the correct specification. At all times the manufacturer’s
maintenance and service guideline shall be followed. If in doubt consult the
manufacturer’s technical department for assistance.
The following checks shall be applied to installations using flammable refrigerants:
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;
Refrigeration 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 suitably protected against being so
corroded.
•
Checks to electrical devices
Repair and maintenance to electrical components shall include initial safety
checks and component inspection procedures. If a fault exists that could
compromise safety, then no electrical supply shall be connected to the circuit until it
is satisfactory dealt with. If the fault cannot be corrected immediately but it is
necessary to continue operation, an adequate temporary solution shall be used.
This shall be reported to the owner of the equipment so all parties are advised.
Initial safety checks shall include:
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.
7. Repairs to sealed components
•
During repairs to sealed components, all electrical supplies shall be
disconnected from the equipment being worked upon to any removal of sealed
SAFETY OPERATION OF FLAMMABLE REFRIGERANT
- 23 -