77
Also take into account the following points:
■
Only use extraction equipment which is suitable for
R290.
Check the condition of the extraction equipment,
including the service record.
All electrical components of the extraction equipment
must be suitable for operation in flammable atmos-
pheres.
■
Only use refrigerant bottles suitable for R290, e.g.
special recycling bottles. The refrigerant bottles must
be correspondingly labelled.
The refrigerant bottles must be equipped with a
safety valve and permanently attached shut-off
valves.
■
Check whether a sufficient number of recycling bot-
tles is available.
■
Evacuate and cool any empty refrigerant bottles.
■
Do not mix together different refrigerants in a single
recycling bottle.
■
Have suitable transport equipment ready for the
refrigerant bottles (if required).
■
Check the availability of personal protective equip-
ment and its proper use.
■
Check whether the waste treatment areas and the
refrigerant bottles correspond to the relevant direc-
tives.
0
1.
Isolate the system from the power supply.
Danger
Escaping refrigerant can lead to explosions
that result in very serious injuries.
Do not introduce a voltage source into the
ESyCool container.
0
2.
Check whether the safety instructions for work on
the refrigerant circuit are being adhered to: See
page 3.
0
3.
Connect the refrigerant bottle to the extraction
equipment. Connect the extraction equipment to
the refrigerant circuit via a manifold.
0
4.
Extract the refrigerant from all parts of the refriger-
ant circuit using the extraction equipment.
Note
■
The refrigerant extraction must be continuously
monitored by an authorised contractor.
■
Do not overfill the refrigerant bottle, max. 80 %
of the permissible capacity.
■
Do not exceed the permissible design pressure
of the refrigerant bottle.
0
5.
Separate the refrigerant bottle from the refrigerant
circuit. Take the refrigerant bottle to the waste
treatment area.
0
6.
Clean and check the recovered refrigerant. Do not
mix the refrigerant with other refrigerants.
0
7.
Purge the refrigerant circuit with oxygen-free nitro-
gen.
■
On no account use air or compressed air.
■
Observe the permissible operating pressure of
the refrigerant circuit: See "Specification".
0
8.
Release the positive pressure.
0
9.
Evacuate the refrigerant circuit.
10.
Repeat steps 7 to 10 until there is no more refrig-
erant in the refrigerant circuit.
Note
On the final purging process, release the positive
pressure down to atmospheric pressure. Do not
evacuate further.
This is especially important if brazing/soldering
work is to be carried out on the refrigerant circuit.
11.
Affix a label to the heat pump in a clearly visible
position, containing the following information, with
date and signature:
■
Refrigerant is flammable.
■
The system has been taken out of use.
■
The refrigerant has been removed.
Maintenance
Extracting the refrigerant
(cont.)
5800 917 GB
Maintenance
