41
Lubrication
Types and quantities of lubricants are specified in table below.
Lubricant included inside supplied actuators is intended for their entire service life. Lubricant does not need
to be exchanged and its quantity does not need to be checked over the entire service life of actuators.
Actuators with grease are identified with label stating “Filled with grease”, located on the power box on the
hand wheel side.
Note:
The Ciatim 221 lubricant is designed for the friction points of rubber bushings against metal surfaces, roller
brake, the hub of an outer cogged wheel of a planetary-gear differential of actuators 52 442 (for locations of friction
between the shaft and other surfaces).
Maintenance
Moreover, the rectilinear mechanism 11
(Fig. 1)
should be greased yearly. For this purpose, force about 50 g of
grease MOGUL LV 2-EP into grease box 12 of the rectilinear mechanism
(Fig. 1).
The threads of the nut and the
spindle are also greased with MOGUL LV 2-EP so that the upper tightening strip or ring of dust seal 13
(Fig. 1)
is
released. After removal of the dust seal, the threads should be greased through the gap that has been thereby
disclosed. This procedure should be made with the pull-rod in the CLOSED position.
In case the actuator is operated in a dusty environment its surface should be regularly cleaned from dust in order to
prevent deterioration of its cooling.
Once in two years, it is recommended to lightly smear the driving wheel gearing on the output shaft and the gear
wheel of the position sensor in the control box. Use the lubricant CIATIM 201 or PM MOGUL LU 2-3.
14. FAILURES AND THEIR REMOVAL
The actuator is in its limit position and does not start; the motor hums. Make a check for possible interrupted phase.
If the valve is wedged and cannot be moved using the hand wheel or motor, dismount the actuator and release
the closure mechanically.
Cleaning – general inspection
The electric actuators should be kept clean and attention should be paid to prevent their clogging with dirt and dust.
Cleaning should be carried out regularly and as often as required by operation conditions. Occasionally, it is necessary
to make sure that all connecting and earthing terminals are properly tightened in order to prevent their heating during
operation. The general inspection of the actuator is recommended once in 4 operating years unless otherwise specified
in the revision regulations of electric devices.
52 442
0,30
52 443
0,50
Actuator serial
number
Quantity
of lubricant
(kg)
T1
(-25 – +70 °C)
CIATIM – 201 GOST 6267-74
CIATIM – 221 GOST 9433-80
U1
(-40 – +60 °C)
Type of lubricant for specific climatic conditions and temperature
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