Flowserve RG Series Standard Actuator - Manual (Page 11)

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User Instructions RG Series Standard Actuator - AXENIM0122-00 12/09
7 Long Term Storage
It is recommended to take precautions and certain
measures when storing the actuators for extended
periods of time, more than 4 months to two years.
Potential problems and recommended protections
are as below:
6 Torque Shaft
The output shaft is recommended to have two key en-
gagements. Shaft material shall be alloy steel with mini-
mum yield strength of 85,000psi. The recommended
hardness of keys is 25-28HRc.
Recommended engagement length of the keys is as be-
low (see Fig.: 3).
Model L
k
(mm) L
o
(mm)
RG1 165 180
RG2 195 210
RG3 200 215
RG4 255 270
RG5 300 315
RG6 350 375
RG7 500 515
RG8 585 610
Potential Problem Protection
Water entry into pneumatic cylinder, degrades the cylinder, par-
ticularly in saline or corrosive environment.
Temperature swings cause condensation inside cylinders
• Store actuator in clean, dry and protected warehouse, or un-
der ventilated dust cover.
• Plug all ports after purging with dry instrument air or nitro-
gen.
• Store vertical, to avoid seal set.
Seal compression set Cycle actuator 5-6 times with clean dry instrument air or nitro-
gen, every 3 months.
Degradation of seals in excessively corrosive or hot environ-
ments
• Do not store in locations subjecting the actuator to tem-
peratures in excess of seal rating. Std seals are Nitrile, max
temp 180deg F.
• Do not store in environments harmful to resilient seals.
Physical damage to actuator or accessories. Store actuator assembly on skid, off the floor, out of pathways.
Inspect the protections every 3 months and record inspection results.
Fig.: 3 Key Length
L
k
L
o