D R I S T E E M R e t r o f i t a c t u a t o r i n s t r u c t i o n s • P a g e 3
A c t u a t o r r e m o v a l i n s t r u c t i o n s
Note: Personal working on an actuator replacement
should wear safety glasses at all times during this
changeout.
Remove existing actuator and linkage — MP55XX electronic
hydraulic actuator
1. Disconnect all wiring attached to actuator.
2. Disassemble actuator from valve body by unscrewing actuator
from extension.
3. Remove extension from valve body.
4. Using channel locks, compress the spring and square washer
on top of spring. Using a flat head screwdriver, turn the brass
square nut counter-clockwise to release the washer.
CAUTION
: Spring is under compression and brass square
nut and/or spring could be propelled from valve body if not
firmly held.
Note
:
Remove spring, washer, and brass extension attached to
valve stem.
5. See Figure 4-1 on page 4.
Remove existing actuator — existing DuraDrive actuator
1. Disconnect all wiring attached to actuator.
2. Disassemble actuator from linkage. Loosen the nuts on the shaft
clamp and the anti-rotation shaft.
3. See Figure 5-1 on page 5 for a 2-way valve (STS®, Ultra-sorb® and
steam injection humidifiers). Or see Figure 6-1 on page 6 for a
3-way valve (LTS®).
