Areas Of Application On Hc And Lg Compressors; Refrigerants; Oil Charge - Danfoss BOCK HG88e Operating Manual

4 | Areas of application
Maximum admissible
frequency: 60 Hz
5 | Areas of application at HC and LG compressors

5.1 Refrigerants

• Hydrocarbons:
• HFO refrigerants:
5.2 Oil charge
The compressors are factory-charged with the following oil type:
• HC compressors:
• LG compressors:
5.3 Operating limits
ATTENTION Compressor operation is possible within the operating limits.
Maximum admissible
frequency: 60 Hz
© Danfoss | Climate Solutions | 2023.10
Maximum admissible operating
pressure (LP/HP)
R290, R1270 (Recommendation quality 2.5 (< 50 ppm H
R1234ze, R1234yf, R455A, R454C
BOCK lub G68
BOCK lub E55
BOCK lub E85 (from t
These can be found in Bock compressor selection tool (VAP) under
vap.bock.de. Observe the information given there and the follo-
wing notes:
- Minimum superheating ∆t
In order to guarantee the required minimum superheating of ∆t
= 20 K, an internal heat exchanger IHX may have to be installed.
(only at HC compressors)
- Min. pressure gas temperature ≥ 50°C (min. 20K over condens-
ing temperature). Suction gas superheating on compressor ent-
rance should be min. 7 - 10 K, must be increased if necessary
(only at LG compressors)
- Min. oil temperature ≥ 30°C.
- Operation in the vacuum range is not permitted.
During operation in the vacuum range, there is a danger of air
entering on the suction side. This can cause chemical reactions,
pressure rise in the condenser and an excessive pressure gas tem-
perature as well as shifting of the refrigerant ignition limit into the
critical range. Avoid absolutely any entry of air!
Use a low pressure switch! Select a shut-off point min. 50 Pa higher
than the prevailing surrounding pressure!
Maximum admissible operating
pressure (LP/HP)
LP = Low pressure
1)
: 19/28 bar
1)
HP = High pressure
> 15°C, must be specified in the order)
O
= 20 K (only at HC compressors)
Oh
LP = Low pressure
1)
: 19/32 bar
1)
HP = High pressure
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