Singer SDHM-10L SMART OUT, Instruction Manual

Page: 20 / 60

20
ENGLISH
• Only persons authorized by an accredited agency certifying their compe-
tence to handle refrigerants in compliance with sector legislation should
work on refrigerant circuit.
• All repairs must be carried out in accordance with the manufacturer’s rec-
ommendations.
• Maintenance and repairs requiring the assistance of other quali fi ed per-
sonnel must be carried out under the supervision of specialists in the use
of in
fl ammable refrigerants.
• Do not perforate any of the components in the refrigerant circuit. Refriger-
ant gas may be odorless.
1. Checks to the area
Prior to beginning work on systems containing fl ammable refrigerants, safety
checks are necessary to ensure that the risk of ignition is minimized. For repair
to the refrigerating system, the following precaution shall be completed prior to
conducting work on the system.
2. Work procedure
Work shall be undertaken under a controlled procedure to minimize the risk
of a
fl ammable gas or vapor being present while the work is being performed.
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 con
fi ned spaces shall be
avoided.
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 toxic or
fl ammable
atmospheres. Ensure that the leak detection equipment being used is suitable
for use with all applicable refrigerants, i.e. non-sparking, adequately sealed or
intrinsically safe.
5. Presence of fi re extinguisher
If any heat-processing operation is to be conducted on the refrigerating equip-
ment or any associated parts appropriate
fi re extinguishing equipment shall be