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C C R R
Start / Stop
CAP ⇑
CAP min. 50% ⇓
CAP ⇔
Tab. 3: Infinite capacity control (CR) in the range 100% .. 50%
C C R R
Start / Stop
CAP 25% ①
CAP 50%
CAP 75%
CAP 100%
Tab. 4: 4-step capacity control (CR)
CAP
Refrigerating capacity
CAP ⇑
Increase refrigerating capacity
CAP ⇓
Decrease refrigerating capacity
CAP ⇔
Constant refrigerating capacity
Solenoid valve de-energized
Solenoid valve energized
Solenoid valve pulsing
Solenoid valve intermittent
(10 s on / 10 s off)
①
25%-step only: at compressor start (start
unloading) and for compressor models in
the low-pressure range (see application
limits SP-110)
Tab. 5: Legends
Capacity steps 75%/50%/25% are nominal values. The
real residual capacities depend on the operating condi-
tions and on the compressor design. Data can be de-
termined using BITZER SOFTWARE.
I I n n f f o o r r m m a a t t i i o o n n
In part-load operation, application ranges are
limited! See Manual SP-110 or BITZER SOFT-
WARE.
4 4 . . 5 5 H H S S . . 9 9 5 5 : : C C a a p p a a c c i i t t y y c c o o n n t t r r o o l l ( ( C C R R ) ) a a n n d d s s t t a a r r t t u u n n l l o o a a d d i i n n g g
( ( S S U U ) )
The HS.95 compressors are equipped with an infinite
capacity control (slide control). The compressor module
controls the solenoid valves. Interconnected electronic
controls allow operators to selectively activate certain
additional part-load points as needed (depending on
the application limits). For detailed explanations of ca-
10
10
Y Y 1 1
Y Y 2 2
Y Y 3 3
Y Y 1 1
Y Y 2 2
Y Y 3 3
SH
pacity control activation, see Technical Information
Y Y 4 4
ST-150.
I I n n f f o o r r m m a a t t i i o o n n
For start unloading, the compressor module
sets the capacity slider to the minimum dis-
placement. A period of approx. 5 min must be
provided for this in the system controller.
Y Y 4 4
CR(-)
CR(+)
Fig. 6: HS.95: Arrangement of the solenoid valves
SB-110-3 RUS
SB-110-3
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