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Copeland OMB Series Oil Management Control (Emerson Alco)



Copeland Emerson ALCO OMB Oil Management Control

Electronic compressor crankcase oil-level protection designed to help maintain proper compressor lubrication in commercial refrigeration and air-conditioning systems.

OMB Series Oil Level Control Compressor Protection 24V Control Commercial Refrigeration

Reliable Compressor Oil Level Management

The Copeland Emerson ALCO OMB Series Oil Management Control is designed to monitor and protect the oil level in the compressor crankcase.

Adequate lubrication is essential for refrigeration compressor reliability. If insufficient oil remains in the compressor crankcase, internal compressor components may not receive the lubrication required for normal operation.

The OMB provides automatic oil-level management by monitoring the compressor oil level and controlling the supply of replacement oil when required.

How Does the OMB Oil Management Control Work?

① Monitor Oil Level The control monitors the oil level at the compressor crankcase sight-glass connection.
② Detect Low Oil When the oil level drops below the required operating level, the control responds to the low-oil condition.
③ Feed Oil to Compressor The integrated oil-control arrangement allows oil to enter the compressor until the required oil level is restored.

Why Choose Copeland OMB?

🛢 Automatic Oil Management Helps maintain an appropriate oil level in the compressor crankcase without relying solely on manual oil checking.
🛡 Compressor Protection Supports reliable compressor lubrication and helps protect against operating conditions associated with insufficient crankcase oil.
👁 Oil Level Monitoring Installed at the compressor sight-glass location to monitor crankcase oil level.
⚙ Integrated Oil Control Combines oil-level sensing and oil feed control into one compact assembly.
🔌 24V Electrical Versions OMB models are available with 24 V, 50/60 Hz electrical configurations.
🔧 Compressor Adaptability A range of mounting adapters allows the control to be used with different compatible compressor families.

Copeland OMB Series Models

Copeland currently lists the following standard OMB configurations.

Model Item / PCN Voltage Configuration Application
OMB JB24 065365 24 VAC
50/60 Hz
Junction Box Standard
OMB MO24 065366 24 VAC
50/60 Hz
Grommet With Leads Standard
OMB JB24 vs OMB MO24

OMB JB24 – supplied with a junction-box electrical configuration.
OMB MO24 – supplied with electrical leads through a grommet.

Both are part of the standard 24 V OMB oil-management-control family.

OMB vs OMC – Know the Difference

Copeland's latest oil-management documentation groups the OMB and OMC Series together, but they should not be treated as exactly the same model family.

🔵 OMB Series Traditional oil-management control configuration.

• Standard compressor applications
• 24 VAC versions
• Junction box or lead-wire configuration
• OMB JB24 / OMB MO24
🟢 OMC Series Expanded oil-management-control platform.

• Multiple voltage options
• Dual sight-glass versions
• Inlet-strainer versions
• Standard and CO₂ applications
Website Recommendation: If your stock is specifically OMB, keep your main product page named “Copeland OMB Series Oil Management Control”. Do not automatically combine all OMC models into your available-model table unless you also sell those models.


Designed for Refrigeration Compressor Oil Management

Copeland identifies the OMB as particularly suitable for several Copeland Scroll compressor families, including:

Copeland ZF Scroll
Copeland ZB Scroll
Copeland ZR Scroll
Copeland ZS Scroll
Commercial Refrigeration
Compressor Racks
Cold Rooms
Freezer Systems
Copeland also describes the OMB as suitable, with the correct mounting arrangement, for selected Copeland, Carlyle, Bitzer and other semi-hermetic compressor applications.

Typical Oil Management System

Oil Separator → Oil Reservoir → Oil Filter → OMB Oil Control → Compressor

In a typical oil-management system, oil separated from the discharge gas is stored in an oil reservoir. The OMB controls the final supply of oil into the compressor crankcase according to the detected oil level.

Use an Oil Filter for Better System Protection

Copeland recommends installation of an oil filter in the oil inlet line to provide additional protection against contaminants.

This recommendation applies even to oil-management-control configurations that incorporate an inlet strainer.

Typical Copeland Oil Filtration Products:

AOF Series – High Efficiency Oil Filter
AOFD Series – Oil Filter Drier

How to Select the Correct OMB

1. Compressor Model Confirm the exact compressor manufacturer and model before selecting the oil-level control.
2. Mounting Adapter Different compressor sight-glass connections may require a specific Copeland adapter.
3. Supply Voltage Verify that the control voltage matches the electrical system.
4. Electrical Configuration Choose between junction-box or lead-wire configuration according to installation requirements.
5. Oil System Confirm the oil reservoir, pressure differential and oil-line arrangement.
6. Refrigerant & Application Verify compatibility with the refrigeration application and operating conditions.
Important: Do not select an oil management control only by physical appearance. The compressor model, sight-glass connection, mounting adapter, voltage and oil-system arrangement should all be verified.

Why Is Compressor Oil Management Important?

Oil circulates through refrigeration systems together with refrigerant. In systems with long piping or multiple compressors, oil can migrate away from the compressor crankcase.

A properly designed oil management system helps return and maintain the required amount of lubricant in each compressor, supporting reliable compressor operation.

Simple Selling Point:

Monitor the oil level. Feed oil when required. Protect the compressor.

Copeland OMB Oil Management Control Supplier in Malaysia

Looking for a Copeland Emerson ALCO OMB Oil Management Control for your refrigeration compressor?

OMB controls provide automatic compressor crankcase oil-level management for commercial refrigeration, cold-room and compressor-rack applications.

Provide your compressor model, existing oil control model, supply voltage and sight-glass connection for suitable OMB and adapter matching.



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