Bitzer HS.8551 Mode D'emploi page 24

• Loosen the four screws (4) on the flange (3) of the
maintenance connection for the oil filter. Pull the
flange upward by 15 mm and turn it 20° clockwise.
Remove the entire unit upwards. Remove oil filter
(1).
• Clean the oil filter chamber.
• Replace flat gasket (5) and O-rings (6) and insert a
new oil filter (1). Position the flat gasket in the hous-
ing according to the alignment pin (9).
• Fix the entire unit in the three grooves (10), turn it
20° counterclockwise and press it down, while fixing
the alignment pin (9) in the hole provided for it on the
lower side of the flange.
• Insert the four screws (4) into the flange (3) and
tighten them crosswise (80 Nm).
• Evacuate compressor and oil filter chamber.
8 8 . . 6 6 O O i i l l c c h h a a n n g g e e
N N O O T T I I C C E E
!
!
Damage to the compressor caused by degraded
ester oil.
Moisture is chemically bound to the ester oil and
cannot be removed by evacuation.
Proceed with extreme care:
Any penetration of air into the system and oil
drum must be avoided under all circumstances.
Use only oil drums in their original unopened
state!
W W A A R R N N I I N N G G
Oil separator and oil cooler are under pressure!
Serious injuries are possible.
Depressurize oil separator and oil cooler!
Wear safety goggles!
The listed oils, see chapter application ranges, page 5,
are characterised by their particularly high degree of
stability. An oil change is generally not required when
appropriate suction-side fine filters are mounted or
used.
• In case of compressor or motor damage, it is recom-
mended performing an acid test.
If necessary, arrange for cleaning:
• Mount a bidirectional acid-retaining suction line gas
filter and change oil.
• Purge the system on the highest point of the dis-
charge side and collect the refrigerant in a recycling
cylinder.
24 24
• If necessary, change filter and oil again after several
operating hours and purge the system.
Oil types see chapter Application ranges, page 5
Dispose of waste oil properly.
9 9 D D e e c c o o m m m m i i s s s s i i o o n n i i n n g g
9 9 . . 1 1 S S t t a a n n d d s s t t i i l l l l
Leave the oil heater switched on until disassembly.
This prevents increased refrigerant concentration in the
oil.
W W A A R R N N I I N N G G
Risk of refrigerant evaporation from the oil.
Increased risk of flammability, depending on the
refrigerant!
Shut-down compressors or used oil may still
contain rather high amounts of dissolved refri-
gerant.
Close the shut-off valves on the compressor
and extract the refrigerant!
9 9 . . 2 2 D D i i s s m m a a n n t t l l i i n n g g t t h h e e c c o o m m p p r r e e s s s s o o r r
W W A A R R N N I I N N G G
The compressor is under pressure!
Serious injuries are possible.
Depressurize the compressor!
Wear safety goggles!
Close the shut-off valves on the compressor. Extract
the refrigerant. Do not deflate the refrigerant, but dis-
pose of it properly!
Loosen screwed joints or flanges on the compressor
valves. Remove the compressor from the system; use
hoisting equipment if necessary.
9 9 . . 3 3 D D i i s s p p o o s s i i n n g g o o f f t t h h e e c c o o m m p p r r e e s s s s o o r r
Drain the oil from the compressor. Dispose of waste oil
properly! Have the compressor repaired or dispose of it
properly!
When returning compressors that have been operated
with flammable refrigerant, mark the compressor with
the symbol "Caution flammable gas", as the oil may still
contain refrigerant.
SB-110-3 RUS SB-110-3