rotork The Remote Control RCE-SR Instruction Manual page 4

TROUBLE SHOOTING AND MEASURES
1. Cavitation
This will not occur with the correct maintenance.
2. The pump is sucking air (noise occurs)
a. Oil level too low. Fill up with oil.
b. Loose suction tube. Tighten the same.
c. Faulty shaft sealing by the pump. Replace shaft
sealing.
3. Pressure too low (the valve only opens partially)
a. Pressure restriction valve is incorrectly
adjusted. The sealing must not be broken.
Contact the supplier.
b. Pressure restriction valve is worn. Contact the
supplier.
c. Motor or pump is faulty. Replace each unit.
Check the shaft connection.
Note: The hydraulic unit has 2 pcs pressure
restriction valves.
d. Dirt in the pressure relief valve. Clean.
4. No pressure (the valve does not open).
a. Oil level too low. Fill up with oil.
b. O-ring sealing faulty between hydraulic pump
and intermediate piece. Replace O-ring.
c. Pressure restriction valve incorrectly adjusted.
Contact the supplier.
Note: The hydraulic unit has 2 pcs pressure
restriction valves.
d. Motor or pump faulty. See 3 c.
e. Dirt in the solenoid valve. Must be cleaned.
f. Broken coil. Replace coil.
g. Dirt in the pressure relief valve. Clean.
h. Oil strainer clogged. Clean.
www.rotork.com www.remotecontrol.se
ROTORK SWEDEN AB
Box 80, Kontrollvägen 15, SE-791 22 Falun, Sweden
Tel: +46 (0)23-587 00 • Fax: +46 (0)23-587 45 • falun.info@rotork.com
5. Opens slowly
a. See points 3, 4 e and 4 f.
b. The speed restrictor is incorrectly adjusted
(note: only modulating design). Must be
adjusted.
c. Oil strainer clogged. Clean.
6. Closes slowly or not at all
a. The directional valve does not shift gear.
Must be cleaned.
b. The speed restrictor is incorrectly adjusted.
Must be adjusted.
c. The manual / emergency handwheel has not
been manually reset after forced opening. See
Maintenance Instruction point 5.
d. See point 4 e.
7. Oil flow in the indication tube.
a. Leakage in piston sealing. Contact the supplier.
b. Worn cylinder. Contact the supplier.
8. If the fault cannot be found or corrected after
reading points 1-7: Contact the supplier.
- 4 -
We reserve the right to
make changes without notice
Ref No 493A / Art No 980493