The OLC-K1 is optical level cintrolling device, monitoring oil level in compressors.

It consists of a screw-in prism unit and an optical level detection device. The prism unit is installed in the compressors oil chamber. The level detection device and be replaced without opening to the pressureized part of the compressor. Detection of the level is via infrared light. There is a built-in monitoring system for correct installation.

The relay in OLC-K1 is used in the safety chain for the compressor and will open and lock-out in case of a failure.

At start-up, the OLC-K1 will flash shortly with the LED. After approx. 3 seconds the relay will be activated. For the OLC-K1 monitoring starts when the D1 signal is applied and atfer the 90 seconds delay time the level is evaluated.

If the oil level is too low or there is afilure ,the relay will be opened and the LED will signal the failure.

• LED off: oil level good, no failures.
• LED on: oil level low
• LED flashing: OLC not correctly mounted, or supply voltage too low, or internal failure.