49
In the design variant with the connector plug-and-socket, attention should be paid to the following:
a) Fix the lead-in cables at a minimum distance of 150 mm from the end of the cable inlet in the plug. The attachment
should be made to the frame on which the actuator is mounted.
b) Earth the actuator via the external ground terminals with which both the electric motor and the terminal box are fitted.
c) Before the instrument socket is disconnected from, or connected to the connector, make sure that the actuator is
disconnected from the AC mains.
d) Avoid pulling or pushing the lead-in wires during connection or disconnection.
e) Consider that disconnection or connection can be made only after the actuator earthing has been checked.
If the actuator is fitted with the local control unit
(LCU)
the control voltage should be applied to the LCU switch first
to disable remote control in the local control mode.
When mounting and/or adjusting the actuator, a proper lighting should be catered for.
ADJUSTMENT AND SETTING-UP OF ACTUATORS
The adjustment and setting-up of the actuators should be made only by a qualified technician.
OPERATION
Depending on the operating conditions, the operation of the actuators usually involves only some checks and the
transmission of pulses, as required for the individual functions.
In the event of a power supply failure, readjust the controlled device by the handwheel. If the actuator has been
connected in the circuit of automatic equipment, it is advisable that manual remote control units are connected in the
circuit so that the actuator can be controlled even if a failure of the automatic equipment occurs. It is the user’s duty to
ensure that the actuator is given the specified maintenance attention and is protected against the harmful effects of the
environment and climatic conditions. If the actuator is to be shut down for a relatively long period it is advisable to place
a bag of drying agent in the terminal box.
The actuators should not be operated with their guards removed. When the actuator has been readjusted by
the handwheel the latter should be secured by means of a screw in its hub.
(This does not apply to Type No. 52 260).
13. MAINTENANCE
The actuators are lubricated with plastic consistent lubricants. The types of lubricant and amounts are listed in
the table.
Lubricants in the drive units supplied are designed to last the entire useful life of the unit. During the time when
the drive units are in use, it is not necessary to change or monitor the amount of the lubricant.
The actuators with plastic lubricant are labelled
„Filled: solid grease“
on the power box at the side of the hand-
wheel.
Note:
Lubricant Ciatim 221 is used for lubricating places where rubber sleeves rub against metal surface and where the
collar is fitted on the output shaft of actuators 52 260 (in places of friction with the shaft and on surfaces).
The adapter of the actuator, No. 52 265 and 52 266, should be packed with 1 kg of PM MOGUL LV 2-3 grease.
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.
Any repair, maintenance or adjustment of the actuators should be made only by the qualified technician. Prior
to any repair, the actuator should be disconnected from the AC mains and secured against inadvertent
reconnection. If the actuator is fitted with the local control unit (LCU), the LCU switch should be rotated to the OFF
position.
When making repairs or adjustments, a suitable lighting of the control and terminal boxes should be provided.
Making any modifications in the actuators is strickly prohibited without manufacturer’s consent.
52 260
0,30
52 261, 52 262
0,50
52 263 – 52 266
0,70
Type number
of drive unit
Volume of lubricant
(kg)
T1
(-25 – +70 °C)
CIATIM – 201 GOST 6267-74
CIATIM – 221 GOST 9433-80
U1
(-40 – +55 °C)
Type of lubricant for specific climatic conditions and temperature
