Pipelines - Bitzer CSH6553-35Y Instructions De Service

NOTICE
!
!
Do not overheat the shut-off valves!
Cool the valve body and the brazing adapter
during and after the brazing operation.
Maximum brazing temperature 700°C!
For welding, dismount the pipe connections and
the bushes.
When turning or mounting shut-off valves:
NOTICE
!
!
Risk of damage to the compressor.
Tighten screws crosswise in at least 2 steps to
the prescribed tightening torque.
Perform a tightness test before commissioning!
When retrofitting the ECOshut-off valve:
Information
To increase the corrosion protection, it is recom-
mended to paint the ECO shut-off valve.
4.3.3

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. These must be removed before per-
forming the strength pressure and tightness tests and
commissioning the system.
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 holding charge:
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).
SB-170-7
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. Absolutely observe the recommendations
in SH-170.
Optional pipes for liquid injection (LI) and / or econom-
iser (ECO) must first be routed upward from the con-
nection (Pipe layout of the ECO suction gas line at the
compressor). This avoids oil migration and damage to
the components through hydraulic pressure peaks (see
manual SH-170).
Fig. 3: Pipe layout of the ECO suction gas line at the compressor
1 Pulsation muffler
Fig. 4: Pipe layout for liquid injection (LI) with liquid injection valve
Information
Notice for connecting an external oil cooler, see
manual SH-170.
Information
For other examples about pipe layout, see
manual SH-170.
Additional connections for evacuation
For an optimal evacuation capacity, it is recommended
to install generously-sized, lockable additional connec-
tions on the discharge and suction sides. Sections
locked by check valves must have separate connec-
tions.
CS 65 .. CS 85
CSW95:
1
min. 20 cm
ON 110°C
OFF 100°C
TC
. . ,
min. 20 cm
33