EN -
30
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.com
Reference 8_1522 - UMAAPRK0 - 07/20
IT
EN
DE
FR
ES
INSTRUCTION MANUAL
RACKON: RACK & PINION PART TURN PNEUMATIC ACTUATOR
RK10 - RK480
C) Equipment technical specification:
Max operating pressure
8 bar (116 psi)
Ambient temperature T6
-50°C ≤ T
a
≤ 60°C (-58°F≤T≤140°F)
Ambient temperature T5
60°C < T
a
≤ 75°C (140°F≤T≤167°F)
Ambient temperature T4
75°C < T
a
≤ 110°C (167°F≤T≤230°F)
Ambient temperature T3
110°C < T
a
≤ 150°C (230°F≤T≤302°F)
Max working frequency
1 Hz
Materials
All aluminium alloys used contain less than 7,5% magnesium (Mg) by mass
Seals
NBR (Standard version)
FKM (High Temperature version)
FVMQ (Low Temperature version)
12. ACTUATORS SPECIAL VERSIONS
OMAL manufactures and supplies special actuator configurations for specific use and environment.
External protections
.
All standard version could be supplied with different external protection according to ambient working condition (see OMAL catalogue
or contact our sales department).
13. STORAGE
OMAL actuators packaging is designed to provide protection during shipment, however, they can be damaged in transport. Before to
store them, verify eventual shipping damages. Keep actuators in their original packaging during storage.
It is recommended to keep actuators in a dry and clean environment at temperatures -10°C÷60°C (14°F÷140°F).
Actuators have two air ports, which are closed by labels for prevent dust or solid particles incoming during storage.
If actuators should be stored for a long period before installation, it is recommended to stroke them periodically to prevent seals
damages.
14. TROUBLE SHOOTING
Potential effect of failure
Potential cause of failure
Solution
Loss or reduction of the supplied
torque
Lack of supply
Verify actuator connection to pneumatic
supply line
Air supply not enough to produce
required torque
Verify that supply pressure value
corresponds to operation requirements
(see actuator label)
Leaks from the stem upper or lower
seals
Stem O-ring damage
Seals replacement (see section 10)
Cylinder damage
Contact us for repair
Shaft damage
Leakage form cylinder caps
Seals damage
Seals replacement (see section 10)
Leakage from the ports afte
manoeuvre
Piston seal damage
Pistons seals replacement
(see section 10)
Cylinder damage
Contact us for repair
Leakage form plate
Seals damage
Seals replacement (see section 10)
Insufficient valve rotation
Increase of valve manoeuvre torque
Verify valve release torque and
replacement possibility
Air supply not enough to produce
required torque
Verify that supply pressure value
corresponds to operation requirements
(see actuator label)
Incorrect adjustment
Adjust the actuator (see section 8)
Wrong connection between actuator and
valve stem
Check connection elements between
valve and actuator
