DeZurik MO Handmatig - Pagina 6

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DeZURIK

MO Manual Override for Rotary Diaphragm Actuators

Installing the Manual Override

1. If the manual override was removed from the diaphragm cover, apply a bead of non-hardening

sealant such as Loctite Permatex Form-A-Gasket #2 to the mating surfaces of the manual

override housing and diaphragm cover, then fasten the manual override to the diaphragm cover.

2. For DR40 actuators: Mount the diaphragm cover to the spring case with screws, nuts, and

washers. Place the caution tag and washer under one of the screws. Tighten the screws evenly

until the rubber diaphragm is in contact with the cover and the spring case. Then tighten the

screws in a crisscross pattern to 80 ± 2 inch pounds (9.0 ± 0.2 Nm).

For DR55 and DR85 actuators: Mount the diaphragm cover to the spring case with screws,

nuts and washers. Place the caution tag and washer under one of the screws. Tighten the

screws evenly until the rubber diaphragm is in contact with the cover and the spring case. Then

tighten the screws in a crisscross pattern to 12 ± 2 foot pounds (16 ± 3 Nm) for the DR55, or

18 ± 2 foot pounds (24 ± 3 Nm) for the DR85.

3. Connect the actuator piping.

4. Pipeline flow may now be restored.

D10114

Page 6

August 2012