20
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).
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.
13. FAILURES AND THEIR REMOVAL
Actuator in the end position does not start, with motor droning. In this case, check that no phase of the
actuatorpower-supply has been discontinued.
Self-stopping after starting of the actuator from the end position of the output shaft. In this case ensure that
the slot of the change-over gear
(Fig. 2)
stops in the end position of the actuator output shaft
(after operation of
the torque-limit switch)
before running onto the shifting device 21
(Fig. 3).
This can be achieved by turning the output
shaft round a suitable amount while the actuator is connected to the valve, or by turning the change-over gear round
a suitable amount with respect to the output shaft. For this purpose, the change-over gear is provided with two slots for
a connecting spline.
