KRIWAN Industrie-Elektronik GmbH · Allmand 11 · D-74670 Forchtenberg · phone (+49) 7947 822 0 · fax (+49) 7947 1288 · e-mail: [email protected] · home: www.kriwan.com
Technical changes reserved
Pr
oduct gr
oup S
Edition: 710.00566.0
INT280-60
®
INT280-60
®
INT280-60
Wiring diagram
Dimensions in mm
PE
N
L3
L2
L1
F1
F2
Q1
H1
Alarm
1
2
3
4
5
INT280-60
M
3 AC
169
93.9
29.5
Ø50
Ø47.6
Ø6.7
Ø58.5
112°
90°
34°
45°
60
97
32
111.5
9
Application
The INT280-60 is a further development of the reliable KRIWAN oil level
regulators.
The oil level regulator INT280-60 monitors and controls the oil level in
the refrigerant compressors. The problem of poor oil distribution in
multi-compressor packs has been overcome by actively supplying oil
from the oil reservoir. This minimizes the risk of operating without
enough oil in the compressor.
Functional description
If the oil level is too low, the intelligent filling algorithm controls the oil
refill. To do this, the integrated solenoid valve is opened cyclically.
The oil level regulator switches the compressor off through the internal
relay if the oil level remains too low after an extended period of time. Oil
refilling continues after this.
When the oil level is sufficient the relay tightens, the compressor can
start again.
The reactions are time delayed, to prevent unnecessary switching in
response to temporary fluctuations in the oil level.
The INT280-60 has its own monitoring system of the optical sensor. In
the event of malfunctions or soiling, the relevant warning or error will be
notified.
The integrated LED signals the current status.
For operation in the specified manner, the supply voltage has to be on
permanently on the INT280-60.