EN -
10
OMAL S.p.A.
Headquarters
: Via Ponte Nuovo, 11 - 25050 Rodengo Saiano (BS) Italy •
Production Site:
Via Brognolo, 12 - 25050 Passirano (BS) Italy
Ph.
+39 030 8900145 •
Fax
+39 030 8900423 • [email protected] •
www.omal.it
Rif. UMA800081A - 02/18
INSTALLATION, USE AND MAINTENANCE MANUAL
PNEUMATIC ACTUATOR “DA08”
IT
EN
Replacing the seals
a) Disassembly
The disassembly operations must be performed when the actuator is disconnected from all the electric
and pneumatic connections and from the valve. Verify that there is no pressure in the actuator. Check that
the ports 2 and 4 are free. Use appropriate tools only.
a. Loosen the cap screws (ref.16) crosswise and remove the caps (ref.3) and replace the seal (ref.8).
b. Keep the actuator blocked with a clamp while turning the stem until the pistons (ref.2) are not released
from the grooved housing on the shaft (ref.4), therefore slide out the pistons from the cylinder (ref.1). Do
not use compressed air to remove the pistons from the cylinder, for it may cause injuries.
c. The O-rings (ref.12) and the rollers (Ref.7) are to be checked before replacing them. Do not use sharp
tools to remove the O-rings and the rollers from the piston for they could get scratched or damaged.
d. The disassembled parts must be carefully cleaned and checked before being greased and reassembled.
If the seals are worn out, they are to be replaced with new ones from the spare parts Kit.
2
4
1
7
12
Summary of Contents for DA08
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