15
IMO-218 EN - Issue 8/2020
j.
Ensure both the pistons are engaged in the same position.
Same amount of gap between the face of each piston and the
end of the body will confirm this.
k. For spring return actuators, insert the springs.
NOTE:
• While assembling springs and end caps on spring return
actuators, it is necessary to have the actuator body in the
vertical position. This is required to ensure that springs remain
properly aligned and centered during assembly.
q. Fix the seals #16 on the left and right end caps and install
on to body. Ensure the air ports on the end caps are aligned
properly. Ensure uniform tightening sequence of the bolts
1 – 3 – 2 – 4.
r.
Install stroke adjustment screws #5A and 5B with o-rings #23,
washers #24, and lock nuts #13.
s. Apply air to Port A to move pistons to the extended 90 degree
position.
t.
Adjust stroke adjustment screw #5A for the 90 degree position,
turning clockwise until the screw is barely touching the piston.
Tighten the lock nut.
u. For spring return actuators, release the air pressure, for double
acting actuators, apply air to Port B. This will bring the pistons
back to the 0 degree position.
v. Adjust the stroke adjustment screw #5A for the 0 degree
position, turning clockwise until the bolt is barely touching the
piston. Tighten the lock nut.
w. Apply air as required to stroke the actuator several times to
confirm that the stroke adjustment screws are set correctly and
ensure that there is no air leakage from any of the seals.
x. Re-install or repack for storage (see section 11 for Packaging
and Storage).
y. For flower spring structure follow the instructions same as that
of concentric structure.
z. For positioning of flower spring structure please refer fig.
WARNINGS
• Use only genuine spares parts supplied by Neles.
• Use only the recommended accessories and lubricants.
• Install, operate and maintain as per the instructions and
recommendations of this manual.
• No metal should fall on actuator body to ensure no spark
generation in actuator body.
• All accessories should have explosion protection or
intrinsically safe.
• Any deviation from the above warnings will cease the
responsibilities of Neles.
Summary of Contents for Easyflow RNP Series
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