Bettis Rack and Pinion Pneumatic Actuator RPE0350U

Warning: This maintenance check requires trained personnel with PPE!

Enter the number of cycles completed by the actuator

Visual inspection of the entire actuator and control system passed?

No leaks on the actuator parts under pressure?

Pneumatic connections checked for leaks?

Manual override checked and is regular?

Pneumatic filter cartridge is sound and filter bowl cleaned properly?

Enter the power fluid supply pressure value

Warning: This procedure requires trained personnel with PPE!

Circlip (27) and thrust bearing (23) removed

Top pinion bearing (19) removed (for sizes 950 to 4000)

Pinion (18) removed by pushing it downwards

Backup ring (29), O-ring pinion top (21), cam (24) and cam thrust washer (25) removed (for Size 4000)

Pinion O-ring seals (21/22) and the pinion bearings (19/20) removed

Backup ring (29) removed (for Size 950 to 2500)

Disconnect all air supply hoses (Ports A and B or solenoid)

Disconnect all electrical wirings of the switch box

Disconnect the electrical wiring of the solenoid valve

Remove the bolts and nuts from the valve flange

Remove the bracket from the actuator

Remove the switch box and solenoid valve. Refer to the documentation of the switch box and solenoid valve for safe disassembly

Sign off on the actuator removal

1. For Double-Acting actuators, do the following:

a. Remove the screws (8) and washers (10) of the end caps (6).

b. Remove the o-ring (11) and "B" port seal (2). Discard these parts.

Double acting end caps (6) are fitted with a white warning sticker. Spring return end caps (5) are fitted with a black warning sticker.

Actuator sizes 25 to 100 have high end caps for double-acting and spring-return models.

Actuator sizes 150 to 4000 have low end caps for double-acting models and high end caps for spring return models.

2. For Spring-Return actuators, do the following:

a. Tip: For actuators with assembly code CW, turn back the right hand limit stop screw (30) 2 full turns.

For actuators with assembly code CC, turn back the left hand limit stop screw (30) 2 full turns.