Charging Procedures - Panasonic U-4LZ2E5 Installationsanleitung

CHARGING PROCEDURES

CAUTION
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 overfill the refrigeration system.
Prior to recharging the system, it shall be pressure-tested with the appropriate
purging gas.
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 or discharging the refrigerant.
To avoid fire or explosion, dissipate static electricity during transfer by grounding
and bonding containers and equipment before charging / discharging.
DECOMMISSIONING
CAUTION
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 recovered 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 instructions.
h) Do not overfill cylinders. (No more than 80% volume liquid charge).
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