Kaysun KMF-80 DVR5, Инструкция для владельца и по установке

Страница: 11 / 68

6
● Cylinders shall be kept upright.
●
Ensure that the refrigeration system is
grounded prior to charging the system with
refrigerant.
● Label the system when charging is
complete (if it is not already labeled).
● Take extreme care not to overfill the
refrigeration system.
● Prior to recharging the system it shall be
pressure tested with OFN. 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.
●
Before carrying out this procedure, it is
essential that the technician is completely
familiar with the equipment and all its detail.
It is recommended 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 the cylinder is situated on
the scales before recovery takes place.
g) Start the recovery machine and operate
it in accordance with the manufacturer’s
instructions.
h) Do not overfill cylinders. (No more than
80 % volume liquid charge).
i) Do not exceed the maximum working
pressure of the cylinder, even temporarily.
j) When the cylinders have been filled correctly
and the process has been completed, make
sure that the cylinders and the equipment are
removed from site promptly and all isolation
valves on the equipment are closed off.
k) Recovered refrigerant shall not be charged
into another refrigeration system unless it has
been cleaned and checked.
● 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
flammable refrigerant.
● When removing refrigerant from a system,
either for servicing or decommissioning,
it is recommended that all refrigerants are
removed safely.
● When transferring refrigerant into cylinders,
ensure that only appropriate refrigerant
recovery cylinders are used. Ensure that
the correct number of cylinders for holding
the total system charge is 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 valves and
associated shut-off valves in good working
order. Empty recovery cylinders are
evacuated and, if possible, cooled before
recovery occurs.
● Recovery equipment shall be in good
working order and have an easily
accessible set of instructions concerning
the equipment. and the equipment shall be
suitable for the recovery of all appropriate
refrigerants including, when applicable,
flammable 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 in 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 the
manufacturer if assistance is required.
● 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 will
be removed, ensure that they have been
evacuated to an acceptable level to make
certain that flammable refrigerant does not
remain within the lubricant. The evacuation
process shall be carried out prior to
returning the compressor to the suppliers.
Electric heating will only be employed
on the compressor body to accelerate
this process. When oil is drained from a
system, it shall be carried out safely.