NV.. with H.. - installation instructions / manual operation
B C
A2B The neck of the valve (B) must be cleaned before the linear
actuator supplier (A) is fitted onto it. Care must be taken to ensure that the bracket, which is an integral part of the linear actuator, is pushed down until it is in firm contact with the neck of the valve. The bracket must then be secured firmly to the neck of the valve by tightening the two fixing nuts (2) (with a torque of at least 10 Nm) with a 10 mm open-jaw or ring spanner. Next, use the manual operating mechanism to move the position indicator (D) to the position (3) of the valve stem (E) and latch it there.The black
locking station (F) is then pushed down so that it is flush with the position indicator (4). The stem coupling is now secured and cannot unlatch accidentally.The followers (G) are automatically moved to the maximum traveled stroke by the position indicator.When dismantling, first release the fixing nuts of the bracket. Then move the stem coupling to the middle of the stroke with the manual operating mechanism. Next, push the locking device (black sliding part) up. The actuator can now be detached from the spindle by pressing in the meanwhile released pushbuttons on the stem coupling. GD 3 F 4 E Manual operation of NVF24-MFTManual operation of NVF24-MFT-E
Manual operation of the NV.. linear actuator
When a linear actuator is supplied separa-
tely but together with a valve, the actuator spindle is extended to approximately the
3 /
4 position. The spindle can be operated with a hexagonal key (the 5 mm or
3 /
16 “ hexagonal key is not included with the actuator). The manual operating mechanism is over-
load-proof. The actuator spindle remains in the manual setting either until its power sup-
ply is energized or until it moves to whichever end stroke position has been selected the next time the
power feeding is interrupted.
2)4)3)1) 2)4)3)1)
5 mm 5 mm 1) Isolate the actuator from the power supply!2) Disengaging manual operation of the NVF24-MFT. Turn the hexagonal key clockwise approximately 45° until resistance is encountered. Then lift the key (approx. 7 mm) until the black socket provided for it is level with the top of the housing cover. The spring mechanism now rotates the key counterclockwise and the actuator spindle retracts.3) Manual operation of the NVF24-MFT. Turning the hexagonal key clockwise causes the actuator spindle to extend; it must be held in the required stroke position.4) Locking manual operation of the NVF24-MFT. Turn the hexagonal key back
D Manual operation of: NV24-3
NV230-3
NV24-MFT
NVY24-MFT
NVG24-MFT
3 /
4 of a turn counterclockwise and then press it down into the cover of the housing (the black socket moves inwards approximately 7 mm). Slight counterclockwise rotation of the key then locks the manual operating mechanism in position.
1) Isolate the actuator from the power supply!2) Disengaging manual operation of the NVF24-MFT-E. Turn the hexagonal key counterclockwise approximately 45° until resistance is encountered. Then lift the key (approx. 7 mm) until the black socket provided for it is level with the top of the housing cover. The spring mechanism now rotates the key clockwise. The actuator spindle extends fully, the position indicator (D) moves down and the valve can be coupled.3) Manual operation of the NVF24-MFT-E. Turning the hexagonal key counterclockwise causes the actuator spindle to retract; it must be held in the required stroke position. 4) Locking manual operation of the NVF24-MFT-E. Turn the hexagonal key back
1)2)5 mm 3 /
4 of a turn clockwise and then press it down into the cover of the housing (the black socket moves inwards approximately 7 mm). Slight clockwise rotation of the key then locks the manual operating mechanism in position. Turning the hexagonal key clockwise 1) causes the actuator spindle to extend; turning it counterclockwise 2) causes it to retract.
ENG-93001-93621-08.04-1M Printed in Switzerland ZSD Subject to technical modifications 30