Sharp UD-P16 Bedienungsanleitung Seite 8

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Label the system when charging is complete (if not already).
Extreme care must be taken not to overfi ll the refrigeration system.
Prior to recharging the system is must be pressure tested with OFN.
The system must be leak tested on completion of charging but prior to
commissioning. A follow up leak test must be carried out prior to leaving
the site.
6. Decommissioning
Before carrying out this procedure, it is essential that the engineer
is completely familiar with the equipment and all its detail. It is
recommended good practice that all refrigerants are recovered safely.
Prior to the task being carried out, an oil and refrigerant sample
must be taken is case analysis is required prior to re-use of reclaimed
refrigerant. It is essential that electrical power is available before the task
is commenced.
Become familiar with the equipment and its operation.
Isolate system electrically.
Before attempting the procedure ensure that:
Mechanical handling equipment is available and being used correctly the
recovery process is always supervised by a competent person recovery
equipment and cylinders conform to the appropriate standards.
a) Pump down refrigerant system, if possible.
b) If a vacuum is not possible, make a manifold so that refrigerant
can be removed from various parts of the system.
c) Make sure that cylinder is situated on the scales before recovery
takes place.
d) Start the recovery machine and operate in accordance with
manufacturer's instructions.
e) Do not overfi ll cylinders. (No more than 80% volume liquid
charge).
f ) Do not exceed the maximum working pressure of the cylinder,
even temporarily.
g) When the cylinders have been fi lled correctly and the process
completed, make sure that the cylinders and the equipment
are removed from site promptly and all isolation valves on the
equipment are closed off .
h) Recovered refrigerant shall not be charged into another
refrigeration system unless it has been cleaned and checked.
7. Labelling
Equipment shall be labeled stating that it has been de-commissioned
and emptied of refrigerant. The label shall be dated and signed. Ensure
that there are labels on the equipment stating the equipment contains
fl ammable refrigerant.
8. Recovery
When removing refrigerant from a system, either for servicing or
decommissioning, it is recommended good practice that all refrigerant
into cylinders, ensure that only appropriate refrigerant recovery cylinders
are employed. Ensure that the correct number of cylinders for holding the
total system charge are available. All cylinders to be used are designated
for the recovered refrigerant and labeled for that refrigerant, i.e. special
cylinders for the recovery of refrigerant. Cylinders shall be complete with
pressure relief valve and associated shut-off valves in good working order.
Empty recovery cylinders are evacuated and, if possible, cooled before
recovery occurs.
The recovery equipment shall be in good working order with a set with a
set of instructions concerning the equipment that is at hand and shall be
suitable for the recovery of fl ammable refrigerants.
In addition, a set of calibrated weighing scales shall be available and in
good working order. Hoses shall be complete with leak-free disconnect
couplings and good condition. Before using the recovery machine, check
that it is in satisfactory working order, has been properly maintained and
that any associated electrical components are sealed to prevent ignition
in the event of a refrigerant release. Consult manufacturer of in doubt.
The recovered refrigerant shall be returned to the refrigerant supplier
in the correct recovery cylinder, and the relevant Waste Transfer Note
arranged. Do not mix refrigerants in recovery units and especially not in
cylinders.
If compressors or compressor oils are to be removed, ensure that
they have been evacuated to an acceptable level to make certain
that fl ammable refrigerant does not remain within the lubricant. The
evacuation process shall be carried out prior to returning the compressor
to the suppliers. Only electric heating to the compressor body shall be
employed to accelerate this process. When oil drained form a system, it
shall be carried out safely.
9. Fuses
The fuses below are mounted on the PWB.
FUSE 1: Walter 2010; AC 250V; T: 2A
FUSE: Walter 2010; AC 250V; T:6.3A or 5A