62 / 70
00U07352240-A_ EN
AHP60 14/18 kW -
Installation, Use and Maintenance
7.8. “Maintenance” check list
■ Before starting any work on equipment containing flammable refrigerant, safety checks must
be performed to minimise the risk of ignition. Take the following steps before working on the
cooling system:
Measure
Performed
Remark
1
General working environment
■ Inform all of the following persons of the type of work to be
carried out:
– All of the maintenance personnel.
– All persons near to the installation.
■ Prohibit access to the heat pump.
■ Check for flammable materials and ignition sources in the
immediate vicinity of the heat pump: remove all flammable
materials and ignition sources.
2
Check that the refrigerant is present
■ To detect a flammable atmosphere in good time: check for
refrigerant leaks in the environment before, during and after
the work using an explosion-proof refrigerant detector suitable
for R32.
This refrigerant detector must not generate sparks and must
be properly sealed.
3
Extinguisher
A CO2 or powder extinguisher must be available for the
following situations:
■ Topping up the refrigerant.
■ When welding or brazing
.
4
Sources of ignition
■
When working on a refrigeration circuit containing or having
contained flammable refrigerant, it is forbidden to use ignition
sources that could cause the refrigerant to ignite.
Remove all sources of ignition from the environment where
the installation, repair, disassembly or disposal work ie being
performed, where the risk of refrigerant leaks cannot be
excluded.
■ Check for the presence of flammable materials and ignition
sources in the immediate vicinity of the heat pump before
proceeding with the work:
Remove all flammable materials and ignition sources.
5
Ventilation of the work site
■
Perform repairs outdoors or ventilate the work area
sufficiently before working on the refrigeration circuit or before
welding or brazing.
■ Ventilation must be maintained throughout the work. The
ventilation must dilute the refrigerant that may escape to the
outside.
