COMPRESSOR PROTECTIVE DEVICES
ELECTRO-MECHANICAL OIL LEVEL
The function of an Electro-Mechanical Oil Level Regulator is to
control the oil level in the compressor crankcase when used as part
of a Low or High Pressure Oil Management System.
Electro-Mechanical Oil Level Regulators can be used with Low and High
Pressure Oil Management Systems on a single compressor or on multi-
compressor racks. The S-9030 Regulators is designed to bolt directly to the
sight glass housing on the compressor crankcase. Henry Technologies
offers a wide variety of Adapters to allow use on most popular compressor
The S-9030 Electro-Mechanical Oil Level Regulator can be adjusted to
maintain an oil level between 1/4 and 1/2 sight glass. The S-9030 maintains
the oil level at any pressure differential between 5 and 300 PSI (0.35 and
The Henry Technologies' Electro-Mechanical Oil Level Regulator is suitable
for use with HFC and HCFC refrigerants and their associated oils, as well as
other industrial fluids non-corrosive to steel, brass, copper, and Teflon.
SAE flare oil and equalization connections
Supply = 24 VAC, 6 Watt
Adjustable oil level between 1/4 and 1/2 sight glass
Low level alarm circuit
Replacement parts available for all major components
Pressure equalization ports for multi compressor applications
Adapters available for most popular compress models
Patented Henry Technologies’ Design*
3 Bolt, 1-7/8” BC Compressor Connections
Maximum Working Pressure = 450 PSI (31 Bar)
Allowable Pressure Differential = 5 to 300 PSI (0.35 to 20.7 Bar)
Allowable Operating Temperature = -14°F to +212°F (-10°C to +100°C)
Henry Technologies' Electro-Mechanical Oil Level Regulator is UL and C-UL
Listed by Underwriters Laboratories, Inc.
Materials of Construction
The shell and caps are made of steel. All connections are made of plated
steel, and the protective cap is made of vinyl.
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 Oil Level Regulator should not be subjected to excessive vibration.
3. The operating differential oil pressure should be within the range of the
4. The oil level must be set and controlled in line with the compressor
5. If the alarm output is used to shut down a compressor, an external time
delay should be fitted into the circuit.
6. Full instructions are given in the Product Instruction Sheet included with
3/8 SAE Flare Inlet
3/8 SAE Equalization Port
ØA B C D E F
S-9030 3.0 3.18 6.5 4.15 2.53 2.4 4.0
REPLACEMENT PART TABLE
Solenoid Valve Kit