4.
Tighten clamping nut [4] and end stop nut [5] using screws [3]. Respect specified
tightening torque!
Table 7:
Tightening torque for screws [3]
Tightening torque [Nm]
Gearbox
35
GS 315
70
GS 400
70
GS 500
5.
Check whether O-ring at protective cap is in good condition, replace if damaged.
6.
Fit protective cap [2] and fasten screws [1] crosswise.
Information: We recommend applying a surface sealing agent to the mounting
faces.
Information
If the gearbox is mounted to a multi-turn actuator, the limit switching for end position
OPEN must be set first in compliance with the operation instructions of the multi-turn
actuator.
6.2.
Seating in end positions via multi-turn actuator
This chapter supplies basic information and instructions which should be heeded in
addition to the operation instructions of the multi-turn actuator.
●
End position seating must be set in compliance with the operating instructions
pertaining to the multi-turn actuator.
●
Part-turn gearboxes of GS 315 – GS 500 type are supplied separately from the
actuator. End stop setting of gearbox and setting of limit and torque switches
must be performed by the valve manufacturer or at the latest on site by special-
ised staff.
●
When setting the torque switching within the multi-turn actuator, make sure that
the tripping torque for both directions does not exceed the max. gearbox input
torque (refer to technical data or name plate).
●
Set the torque switching within the multi-turn actuator to the following value to
prevent damage to the valve:
Tripping torque = valve torque/factor (refer to name plate)
●
Determine overrun of actuator for both directions, i.e. how much does the valve
move after the motor has been switched off?
6.3.
Set mechanical position indicator
End position CLOSED
1.
Move valve to end position CLOSED and check setting.
➥
The setting is correct if the mark aligns with the symbol CLOSED.
2.
If the mark position is not correct:
2.1 Slightly loosen three nuts [1] at pointer cover.
2.2 Turn pointer cover to symbol for position CLOSED.
2.3 Tighten nuts again.
24
GS 315 – GS 500
Commissioning
GZ 30.1 – GZ 40.1