Emerson Process Management BETTIS G01 - Manual (Page 41)

Bettis P/N 124840E
Revision “B”
Page 37 of 46
5.3 PNEUMATIC POWER MODULE REMOVAL
CAUTION: Due to the weight and size of power module, heavy duty support equipment
will be required when removing power module from the actuator housing.
Refer to section 6 for Pneumatic Power Module weights.
5.3.1 Standard Outer end cap with pipe plug use step 5.3.1.1, outer end cap with extended stop
(ES) use step 5.3.1.2, G2 or G3 outer end cap with M3 or M3HW use step 5.3.1.3 and G01
outer end cap with M3 or M3HW use step 5.3.1.4.
5.3.1.1 Standard outer end cap - Remove pipe plug (3-120) from outer end cap (3-80).
5.3.1.2 ES outer end cap:
5.3.1.2.1 Loosen ES nut (3-190).
5.3.1.2.2 Unscrew ES (3-180) and remove from outer end cap (3-80).
5.3.1.3 G2 or G3 M3/M3HW outer end cap:
5.3.1.3.1 Remove socket cap screws (3-320) from M3 adapter (3-280).
5.3.1.3.2 Remove M3 adapter (3-280) from outer end cap (3-80).
5.3.1.4 G01M3/M3HW outer end cap:
5.3.1.4.1 Remove socket cap screw (3-130) from M3 keeper (3-360).
5.3.1.4.2 Remove M3 keeper (3-360) from M3 adapter (3-360) and outer
end cap (3-80).
5.3.1.4.3 Remove M3 jackscrew (3-290) with M3 adapter (3-360) from outer
end cap (3-80).
5.3.2 Using a male square drive extension, go through outer end cap (3-80) and unscrew piston
rod (3-40) from the drive module.
5.3.3 Remove hex cap screws (3-100) with lockwashers (3-110) from housing (1-10).
NOTE: When removing power module from housing (1-10) be careful not to loose o-ring seal (4-90).
5.3.4 Remove power module from actuator housing (1-10).
5.4 POWER MODULE INSTALLATION
5.4.1 Check to verify that o-ring seal (4-90) is properly seated in its seal groove located on the
housing side of inner end cap (3-10).
NOTE: G2 and G3 models (older models) confirm that the two inboard hex nuts (3-90) flats are
aligned to fit into the slot located in the end of housing (1-10).