HP Series Pneumatic Actuator
Installation Operation & Maintenance Manual
Document No. HUMG-HP-16 Rev0
Page 5 / 18
1.6.7.
It is a general rule to use separate lubricate oil in the actuators but not excessively. To
protect the actuators, the
ISO VG32
is recommended as the lubricate oil.
1.6.8.
Check all the bolts and correctly tighten them if necessary.
1.6.9.
Close checking and cleaning should be carried out over once a year periodically, not only
during operation but also during shutdown.
1.6.10.
If air is let out inside/ outside for a long time, the o-ring sliding parts can be damaged. So,
in case of air leakage, replace or repair immediately on discovery.
1.7.
Maintenance
For the maintenance of the actuators, there should not be any air or electrical leaks. Periodical
checking should be carried out regardless of whether joints always seemed fastened. For
optimal working life of the actuators, it is necessary to use enough lubrication oil. The inner seal
should be replaced periodically. When there is a need for repairing tools (including seals), they
can be purchased through agreed representative(s). In the case of spring return actuators, as
repeated condensed power is added on the spring, output torque is reduced due to change of
spring length in long term operation.
The spring set can be purchased at any time via the head office:
Table 1-1. HKC Co., Ltd. Contact Information
Tel.
+82 31 488 8266
Fax.
+82 31 488 8269 / 8696
Homepage
www.hkcon.co.kr
Address
Sunggokdong,155, Byeolmang-ro, Danwon-gu, Ansan-si, Gyeonggi-
do, Republic of Korea (15417)
CAUTION:
n
Turn off all power services before attempting to perform any service on the actuator.
n
POTENTIAL HIGH PRESSURE VESSEL. Before removing or disassembling your actuator,
ensure that the valve or other actuated devices are isolated and not under pressure.
Perform maintenance procedures, under normal conditions, in six month intervals. But when
conditions are more severe, more frequent inspections is advised.
1.7.1.
Ensure that the actuator is properly aligned with the valve or other actuated device
1.7.2.
Ensure that all screws are present and tight
1.7.3.
Ensure that air supply connections are installed properly
1.7.4.
Check that the supply pressure of the operating media is in the required range
1.7.5.
Check the enclosure of O-ring seals and verify that the O-rings are not pinched between
flanges
1.7.6.
Visually inspect the open/close cycle
1.7.7.
Inspect the identification labels for wear and replace it if necessary
1.8.
Lubrication Requirements
CAUTION:
Due to safety measures, alternative lubricants should not be used without the
prior written recommended of HKC Co., Ltd.
The HP-series are a totally enclosed unit with permanent lubrication in the actuator. Once
installed, lubrication should not be required. However, periodic preventative maintenance will
extend the operating life of the actuator.
1.8.1.
Lubrication Points
①
Cylinder Body
②
Piston Seals
③
End Cover Seals
