Air Compressor Manual

EMAX Piston Air Compressors

3. Cap tting on cylinder heads if not using pilot valve for continuous run port.

4. Make sure there is a 1/4” copper tube (unloader tube) installed from tank check valve to unloader on

pressure switch. This relieves head pressure when compressor stops for easier restart. See gure 2.

5. Use proper pulley for motor. Refer to Pulley Size Chart for correct sizing.

6. Install belts. There should be 1/2” slack for proper belt tension. See gure 3.

7. Use a exible connector between compressor tank and piping system to minimize noise, vibration, unit

damage, and pump wear.

Pulley Size Chart

(Pulley size in inches)

Pump

Model No.

Electric

Motor - Hp

1750 RPM

4 Pole Motor

3450 RPM

2 Pole Motor

Gas Engine

APP2V0313S 3 5.5 2.75 5.5 3

APP3Y0518S 3 5.5 2.75 6.5 3

APP3Y0518S 5 5.75 2.75 6.5 3

APP3Y0521T 5 7 3.5 8 3.5

APP2V0732S 5 5.5 2.75 8 3

APP2I0524T 5 7.7 3.8 11 4

APP3Y0732T 5 6 3 11 3

APP3Y0732T 7.5 7 3.5 13 4

APP4V1043T 7.5 6.4 3.2 13 3.2

APP4V1043T 10 8.8 4.4 18 4.4

APP3Y1544T 10 9 4.5 24 4.5

APP3Y2062T 15 9 4.5 28 4.5

APP4V2598T 20 9 4.5 40 4.5

APP4V2598T 25 11.5 5.8 50 5.8

NOTICE

Splash lubricated pumps require 550 RPM for proper lubrication. Be

sure to size motor and engine pulleys correctly.