General Instructions - Rusta 9000 Btu Gebrauchsanweisung

e) Disposal
• Ensure sufficient ventilation at the working place.
• Remove the refrigerant. If the recovery is not required by national regulations,
drain the refrigerant to the outside. Take care that the drained refrigerant will not
cause any danger. In doubt, one person should guard the outlet. Take special care
that drained refrigerant will not float back into the building:
• When flammable refrigerants are used,
a) Evacuate the refrigerant circuit.
b) Purge the refrigerant circuit with oxygen free nitrogen.
c) Evacuate again. (not required for A2L refrigerants)
d) Cut out the compressor and drain the oil.

GENERAL INSTRUCTIONS

1.1 Checks to the area
Prior to beginning work on systems containing flammable refrigerants, safety checks
are necessary to ensure that the risk of ignition is minimised. For repair to the
refrigerating system, the following precautions shall be complied with prior to
con-ducting work on the system.
1.2 Work procedure
Work shall be undertaken under a controlled procedure so as to minimise the risk of
a flammable gas or vapour being present while the work is being performed.
1.3 General work area
All maintenance staff and others working in the local area shall be instructed on
the nature of work being carried out. Work in confined spaces shall be avoided.
The area around the workspace shall be sectioned off. Ensure that the conditions
within the area have been made safe by control of flammable material.
1.4 Checking for presence of refrigerant
The area shall be checked with an appropriate refrigerant detector prior to and
during work, to ensure the technician is aware of potentially flammable atmospheres.
Ensure that the leak tection equipment being used is suitable for use with flammable
refrigerants, i.e. nonsparking, adequately sealed or intrinsically safe.
1.5 Presence of fire extinguisher
If any hot work is to be conducted on the refrigeration equipment or any associated
parts, propriate fire extinguishing equipment shall be available to hand. Have a dry
powder or CO 2 fire extinguisher adjacent to the charging area.
1.6 No ignition sources
No person carrying out work in relation to a refrigeration system which involves
exposing any pipe work that contains or has contained flammable refrigerant shall
use any sources of ignition in such a manner that it may lead to the risk of fire or
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