Technical Bulletin (TB 0006) · BITZER’s OLC-K1 is an electronic oil sensor that monitors the oil...

Technical Bulletin (TB-0006)

Optical Oil Sensor - Oil Level Monitoring Using OLC-K1

Overview

BITZER’s OLC-K1 is an electronic oil sensor that monitors the oil supply in a compressor by means of an infrared light.

It consists of two parts, a prism unit to focus the light beam and an electrical unit to produce it. The prism is screwed directly into the outer cover of the oil supply area for the bearings, and the electri-cal unit is then screwed into the prism unit.

This setup allows for oil monitoring without an external control module.

BITZER is now offering the OLC-K1 oil level sensor for all C3 & C4 compressors with centrifugal lu-brication. This includes all compressors from 4C0770S to 4C2397S.

Part Number Voltage Thread

347318-06 230V M20

347318-07 115V M20

347318-07-NPT 115V 1/2" NPT**

347318-06-NPT 230V 1/2" NPT**

BITZER Part Numbers

** - US versions prior to October 2008

Revision 2 (8/12/2011)

Main Phone: Web: Email: Additional BITZER U.S. Contact Info: BITZER U.S.: 770-503-9226 www.bitzerus.com [email protected] [email protected] BITZER Canada: 514-697-3363 www.bitzer.ca [email protected] [email protected] BITZER Mexico: +52 (81)1522 4500 www.bitzermexico.com [email protected] 24 Hour Quickship Hotline: (888) 462-4893

Optical Measuring Principal

Centrifugal Disc

Oil Sump

Oil Case

Oil Duct

For additional technical information and mounting instructions, please visit ww.bitzerus.com to download

BITZER bulletin KT-180-2. Our Application Engineering Department can be contacted at [email protected] for more information.

Signal path when oil is present

Test signal (infrared light) is absorbed

by oil in the compressor

Red LED light remains off

Status - Good - Oil is present

Signal path when oil is not present

Test signal (infrared light) is reflected

back to the LED unit

Red LED light activates on unit

Status - Compressor shuts off

LED indications:

· LED is off: Sufficient oil supply

· LED is on (red): Insufficient oil sup-

ply (presently)

· LED is flashing (red): Fault

(Voltage or installation)

Manual Reset

Interrupt power supply for at least 5

seconds.

Note: Always try to diagnose the is-

sue in the event of an oil trip instead

of repeatedly resetting it. (Tip: View

the red LED indicator to see if oil is

intermittently dropping out)

Delay Times OLC-K1

After Compressor Starts 90s

In Operation 5s


OLC-K1 Wiring


BITZER bulletin KT-180-2. Our Application Engineering Department can be contacted at

[email protected] for more information.

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OLC-K1 Wiring


BITZER bulletin KT-180-2. Our Application Engineering Department can be contacted at

[email protected] for more information.


Technical Bulletin (TB 0006) · BITZER’s OLC-K1 is an electronic oil sensor that monitors the oil...

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