Pipelines - Bitzer CSH6553-35Y Operating Instructions Manual

5.3.3

Pipelines

Use only pipelines and system components which are
• clean and dry inside (free from slag, swarf, rust and
phosphate coatings) and
• which are delivered with an air-tight seal.
Depending on the compressor versions, they are sup-
plied with blanking plates on the pipe connections or
shut-off valves.
▶ Remove the blanking plates when mounting.
Information
The blanking plates are only designed to serve
as a transport protection. They are not suitable
as a separation between different system sec-
tions during the strength pressure test.
NOTICE
!
!
For systems with rather long pipelines or for
brazing operations without protective gas:
Install the suction-side cleaning filter (mesh size
< 25 μm).
NOTICE
!
!
Risk of compressor damage!
Generously sized filter dryers should be used to
ensure a high degree of dehydration and to
maintain the chemical stability of the circuit.
Make sure to choose a suitable quality (molecu-
lar sieves with specially adapted pore sizes).
Information
Notice for mounting the suction-side cleaning fil-
ter, see manual SH-170.
Mount pipelines in such a way that the compressor is
protected from flooding with oil or liquid refrigerant dur-
ing standstill. Follow the notes given in SH-170.
56
Optional pipes for economiser (ECO) (not for CSH95),
see figure 5, page 56 and/or liquid injection (LI), see
figure 6, page 56 must first be routed upward from the
connection. This avoids oil migration and damage to
the components through hydraulic pressure peaks (see
manual SH-170).
Fig. 5: Pipe layout of the ECO suction gas line at the compressor
1 Pulsation muffler
Fig. 6: Pipe layout for liquid injection (LI) with liquid injection valve
Information
The connections for economiser (ECO) and/or
liquid injection (LI) are not provided on all com-
pressor models, see dimensional drawings.
The connections for ECO and LI on the CSK61
and CSK71 compressors are not approved for
use. These connections will no longer be avail-
able in the near future.
Information
Notice for connecting an external oil cooler, see
manual SH-170.
Information
For other examples about pipe layout, see
manual SH-170.
CS 65 .. CS 85
CSW95:
1
min. 20 cm
ON 110°C
OFF 100°C
TC
SB-170-10
. . ,
min. 20 cm