Climate Control Duplex

Please read and save these instructions. Read carefully before attempting to assemble, install, operate or maintain the product described. Protect yourself and others by observing all safety information. Failure to comply with instructions could result in personal injury and/or property damage! Retain instructions for future reference.

Features

•Guaranteed low oil carryover rate of less than 2 PPM

•Three year warranty on compressor pump

•High efficiency motors

•UL listed controls

•R134A Air Dryer (Optional)

The AD-XXX Series Powerex Duplex Air Compressors have been designed, broken-in and tested to meet the most demanding specifications for low oil carryover and long life in the pneumatic climate control industry.

The units consist of two equally rated motor-compressor assemblies mounted on a single ASME tank. The compressor motors are NEMA Class B design. The AD-XXX Series Compressors are ideal for instrumentation systems requiring an alternate compressor for standby or overload capacity. See Table 1 for motor sizes and air delivery capacities available.

Compressor assemblies are available with or without a factory mounted basic or deluxe alternator/motor starter package. An unloading feature is included on all compressors to provide loadless starting. Models with an alternator are prewired and ready for operation. Internal wiring allows for shutdown of either compressor for repair while the other compressor is running.

An alternating type operation is desirable for many reasons. When a duplex air compressor is alternated, the temperature of both units is kept above the ambient dew point to minimize moisture deterioration and corrosion. Also, the reduction in on- time provides a lower average head temperature with reduced oil entrainment potential and improves the motor life by holding down the average heat rise.

Figure 1 - AD-XXX Series 2 Hp Duplex Air Compressor

with Optional Deluxe Alternator Package

Specifications

 

Product

 

 

AD-XXX Series Powerex Duplex Air Compressors

 

Performance

 

 

 

 

 

Specifications

 

 

See Table 1

 

Models & Options

 

 

See Table 2

 

 

 

 

 

 

 

Lubrication

 

1/2 Through

 

 

 

 

 

10 Hp Models

Splash Lubrication System

 

 

 

 

 

 

 

Operating

1Ø

115/230 Volts, 60 Hz

 

 

 

 

 

 

 

Voltages

3Ø

208-230/460 Volts, 60 Hz

 

Compression

 

1/2 Through

 

 

 

Cycle

 

10 Hp Models

Single-Stage

 

 

Motor Overload

 

1Ø and 3Ø

Overloads (Supplied with all Factory Mounted

 

Protection

 

 

Alternators; Otherwise Field Supplied)

 

 

 

Lead

Cut-In: Factory Set at Approximately 70 psig (490kPa)

 

Pressure Switch

 

 

Cut-Out: Factory Set at Approximately 90 psig (630 kPa)

 

Settings

 

Lag

Cut-In: Factory Set at Approximately 60 psig (420kPa)

 

 

 

 

Cut-Out: Factory Set at Approximately 80 psig (560 kPa)

 

 

Overpressure

 

 

ASME Safety Valve Factory Set and Sealed at

 

Protection

 

 

Approximately 115 psig (805 kPa)

 

 

 

 

 

 

 

Outlet Air

 

 

1/2" NPT on 30 and 80 Gallon Tanks;

 

Connections

 

 

1" NPT on 120, and 200 Gallon Tanks

 

 

 

 

 

 

 

Tank Sizes

 

 

See Table 2

 

 

California

 

 

 

 

 

Ordinance 462 (L)(2)

 

 

Meets requirements of this Ordinance

 

Isolation Mounts

 

 

Vibration pads are included with each unit

Powerex • 150 Production Drive • Harrison, OH 45030 • USA

IN259702AV 3/05