Danfoss BOCK HG44e Series Operating Manual page 31

8| Accessories
WARNING
ATTENTION
Special accessories are only premounted in the factory if ordered specially by customer. Retrofitting is
possible in full compliance with the safety instructions and repair instructions enclosed with the kits.
Information about the use, operation, maintenance and servicing of the components is available in the
printed literature or on the internet under www.bock.de.
For the capacity regulator a step protection is
optional available, Art-Nr. *097B81449.
* Please note that the legacy BOCK code numbers
are without 097B
© Danfoss | Climate Solutions | 2024.07
Several capacity regulators cannot switch at the same time during
compressor operation! Otherwise the sudden change in load can
damage the compressor! Comply with the switching interval of 60 s.
• Comply with the switching sequence:
Swiching on CR1
Swiching off CR2
Capacity-regulated operation alters the gas speeds and pressure
ratios of the refrigerating plant: Adjust the suction line routing and
dimensioning accordingly, do not set the control intervals too
close and do not let the system switch more than 12 times per
hour (refrigerating plant must have reached a state of equilibrium).
Continuous operation in the control stage is not recommended as
the gas velocity in the plant system under certain circumstances
does not guarantee sufficient oil return to the compressor with
activated capacity regulator.
We recommend switching to unregulated operation (100% capac-
ity) for at least 5 minutes per capacity-regulated operating hour.
An assured oil return can also be realised by a 100% capacity
requirement after each compressor restart.
Electrical actuation of the solenoid valve: Normally open, (cor-
responds to 100 % compressor capacity).
60s CR2
60s CR1
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Fig. 22