rotork CVQ 1200, Installation And Maintenance Instructions Manual

Page: 23 / 52

0 pt
23
Established Leaders in Valve Actuation Technology
Stop Bolt Adjustment
It is recommended that stop bolt adjustment be carried out
by the valvemaker/supplier before the valve is fitted on to the
pipework.
Once installed the valvemaker/supplier should be consulted
before stop bolt re-adjustment is carried out. After setting or
adjustment of stop bolts the actuator limits must be reset.
The CVQ stop bolts are located below the main body
assembly. The stop bolt adjustment /- 5% variation
of travel at each end position. Screwing bolts in reduces the
range of movement, out increases range of movement.
For clockwise closing valves the right hand bolt is the closed
stop as shown in Fig 25.1. The left hand bolt is the open stop.
Stop bolts are factory set to give a nominal travel of 90
degrees.
Adjustment for non seating valve types
For closed and open stop position adjustment.
Undo stop bolt locknut. Move actuator and valve to the
required stopping position (it may be necessary to unscrew
stop bolt to allow more travel). Screw stop bolt in until a stop
is felt. Tighten stop bolt lock nut.
Adjustment for seating valve types
Undo stop bolt locknut. Move actuator and valve to the
required stopping position (it may be necessary to unscrew
stop bolt to allow more travel).
Screw stop bolt in until a stop is felt and then back off by
1 to 3 turns.
Tighten stop bolt lock nut.
Set Actuator Limits of Travel
It is possible to set the limits manually if full valve stroke is not
required or automatically using the Quicksetup wizard if full
travel is required between the stop bolt positions.
Go to Page 26 for Quicksetup or Page 31 for Manual
setup options.
Fig. 25.1
Fig. 25.2
Fig. 25.4
Fig. 25.3