Gree GWC09AA, Installation And Service Manual

Page: 71 / 136

GREE Service Manual GWC09AA / K5NNA6A Page 71
Service, Repair and maintenance
A permanent stand-by, the reliability of the system and the expected system effi-
ciency requires a regular preventive maintenance and professional service to
minimise the possibility of malfunction. The annual preventive maintenance and
any required service should be done by a specialised company and personnel
only (competent person).
For the required tools please note the chart on pages 130 to 134.
Directives for service and maintenance
1. Carry out any service or maintenance to the
system only if the working area is well venti-
lated. Make sure that windows and doors are
open.
2. Do not use open fires and remove any source
of ignition away from the installation/work site.
(2 m safe distance is recommended).
3. Do not use cell phones during maintenance
and advise other attendees not to use open
fires or cell phones.
4. Take precautions to avoid static charges. In
order to do so wear e.g. cotton clothing and
protection gloves made of cotton.
5. Should it be demanded to leave the room dur-
ing maintenance – for example in order to get spare parts – make sure
that no unauthorised persons enter the room during your period of ab-
sence. Use appropriate signs.
6. Make sure of a correct grounding during maintenance as demanded by
regulations.
7. In case of transporting the refrigerant cylinders, assure yourself that the
cylinder pressure is not above the allowed pressure.
8. Place cylinders only in an upright position and make sure that the cylinder
is not placed nearby heat or fire sources, sources of radiation or electric
devices.
9. In exceptional cases, it might be necessary to dismantle the system and to
bring it to an authorised service centre.
10. However, all services could be done to the unit locally.
11. Become familiar with the operation of a gas detector. Leave it turned on in
the immediate working area during maintenance in order to get an early
warning about leaking gas.
12. Before beginning maintenance ensure sufficient security- and emergency
measures are provided and ready for operation.
13. Ensure an appropriate fire extinguisher (CO
2
or dry powder) is ready for
use.