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www.henrytech.com

COMPRESSOR PROTECTIVE DEVICES

INFRA-RED OIL CONTROLLER

I-ROC-LV

The function of the Infra-Red Oil Controller is to control the oil level

in the compressor crankcase using proven optical sensor

technology.

Applications

The I-ROC-LV Oil Regulator can be used with Low and High Pressure Oil

Management Systems on a single compressor or on multi-compressor racks.

The I-ROC-LV Oil Regulator is fitted to the sight glass housing of the

compressor and has an integral sight glass that allows visual inspection of

the crankcase oil level. The regulator comes ready to mount to several

popular compressors using the 3 or 4 bolt, 1-7/8” BC, universal flange. Oil

Level Regulator Adapter Kits are available for additional applications. The

I-ROC-LV Oil Regulators are suitable for use with ASHRAE 34 Class A1

refrigerants and their associated oils, as well as other industrial fluids non-

corrosive to aluminum, steel, brass, and synthetic rubber.

How it works

The oil is regulated at 1/2 Sight Glass using variable pulse timing. When a

low oil condition is detected, oil begins to pulse into the compressor at the

time intervals shown in the Operation Table. As the duration of oil filling

increases, the oil pulse time increases to better meet the oil demand. If

demand is not satisfied after 2 minutes of continuous oil feed, a low level

alarm is initiated by means of a fail-safe electrical contact. During the alarm

condition the regulator will continue to pulse feed oil. The alarm will reset

automatically if the oil returns to 1/2 glass. The alarm contact may be used to

shut down the compressor in the event of a low level condition.

Main Features

Ÿ

Patented optical sensor technology*

Ÿ

SAE flare oil connection

Ÿ

Fixed oil level control at 1/2 sight glass

Ÿ

Low level alarm circuit

Ÿ

Replacement parts available

Ÿ

Adapters available for most popular compressor models

Ÿ

Universal flange compressor connection

Technical Specifications

Max working pressure: 650 PSI (45 Bar)

Max differential pressure: 350 PSI (24 Bar)

Max ambient temp: 140°F (60°C)

Max fluid temp: 176°F (80°C)

Supply voltage: 24V, 60HZ

Operating current: 0.6 Amps@24V

Alarm contact rating: 5A@240VAC, SPDT

Henry Technologies' I-ROC-LV Oil Level Controller meets the requirements

of UL 429 and is USR and CNR recognized by Underwriters Laboratories,

Inc.

Materials of Construction

The valve body is made of aluminum. The inlet connection is made of brass.

The outlet adapter is made of plated steel and the electronics enclosure is

made of molded plastic.

Installation - Notes

1. To protect the Oil Level Regulator from system debris, an Oil Strainer, Oil

Filter or Oil Filter Drier is recommended.

2. The operating differential oil pressure should be within the range of the

Regulator's specification.

3. The 1/2 sight glass oil level must be in line with the compressor

manufacturer's guidelines.

4. If the alarm output is used to shut down a compressor, an external time

delay should be fitted into the circuit.

5. The electronic module will be damaged if the 24V supply voltage is

exceeded.

6. Power to the unit should be maintained during compressor running, stand-

by and shutdown modes.

7. Full instructions are given in the Product Instruction Sheet included with

each Regulator.

Œ



Ž



1/4 SAE Flare Inlet

Universal Flange Outlet

Solenoid Valve

Electronics Enclosure

Part No

Dimensions (inch)

Weight

(lbs)

A B C D E F

OP-03-1/2 1.62 3.45 2.69 1.31 3.12 4.30 1.3

OPERATION TABLE

Oil Level Oil Fill Duration Oil Fill Pulse Timing Oil LED Alarm

Good

N/A

No oil flow

Solid No

Low 0 - 60 seconds 1.0 sec ON/1.8 sec OFF Blinking No

Low 61 - 120 seconds 2.0 sec ON/2.0 sec OFF Blinking No

Low 120+ seconds 3.0 sec ON/3.0 sec OFF Blinking Yes

A

B

C

D

E

F

1

4

2

3

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