Panasonic CS-FZ25UKE - Page 14

14
Safety precautions
9. Charging procedures
• In addition to conventional
charging procedures, the following
requirements shall be followed.
- Ensure that contamination of
different refrigerants does not
occur when using charging
equipment.
- Hoses or lines shall be as short
as possible to minimize the
amount of refrigerant contained
in them.
- Cylinders shall be kept upright.
- Ensure that the refrigeration
system is earthed prior to
charging the system with
refrigerant.
- Label the system when charging
is complete (if not already).
- Extreme care shall be taken
not to over fi ll the refrigeration
system.
• Prior to recharging the system it
shall be pressure tested with OFN
(refer to #7).
• The system shall be leak tested on
completion of charging but prior to
commissioning.
• A follow up leak test shall be carried
out prior to leaving the site.
• Electrostatic charge may
accumulate and create a hazardous
condition when charging and
discharging the refrigerant.To
avoid fi re or explosion, dissipate
static electricity during transfer by
grounding and bonding containers
and equipment before charging/
discharging.
10. Decommissioning
• Before carrying out this procedure,
it is essential that the technician
is completely familiar with the
equipment and all its details.
• It is recommended good practice
that all refrigerants are recovered
safely.
• Prior to the task being carried
out, an oil and refrigerant sample
shall be taken in case analysis is
required prior to re-use of reclaimed
refrigerant.
• It is essential that electrical power
is available before the task is
commenced.
a) Become familiar with the
equipment and its operation.
b) Isolate system electrically.
c) Before attempting the procedure
ensure that:
• mechanical handling equipment
is available, if required, for
handling refrigerant cylinders;
• all personal protective equipment
is available and being used
correctly;
• the recovery process is
supervised at all times by a
competent person;
• recovery equipment and
cylinders conform to the
appropriate standards.
d) Pump down refrigerant system,
if possible.
e) If a vacuum is not possible,
make a manifold so that
refrigerant can be removed from
various parts of the system.
f) Make sure that cylinder is
situated on the scales before
recovery takes place.
g) Start the recovery machine and
operate in accordance with
manufacturer’s instructions.
h) Do not over fi ll cylinders. (No
more than 80 % volume liquid
charge).