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3
4
1
Turn actuator
to the left
DH-SMT/SI
VI.JA.G2.02
© Danfoss 11/2006
15
Instructions
Pilot-controlled PCVQ DN 100 - DN 250 (PN 16, PN 25)
Valve unit DN 150–250
The stem of the actuator
4
is screwed into the
valve stem
3
.
Dismounting
1. Dismount impulse tubes.
2. Completely loosen union nut
1
.
The actuator hangs on the screwed-in
stem
4
.
The actuator weights approx.
20 kg. In addition, an internal
spring package is pre-stressed.
Secure against dropping down
before unscrewing.
3. Screw the stem of the actuators 4 out of the
valve stem 3 by turning the actuator to the
left.
Mounting
1. Place actuator at the valve and push upward
to press the spring package in the actuator
together (second person necessary).
2. Carefully turn actuator to the right.
By this, carefully screw in the stem of the
actuator into the valve stem to its stop.
Then, return the actuator by
approx. 1 rotation (to the left)
3. Align actuator, observe position of the control
lines connections.
4. Tighten union nut 1,
torque 100 Nm
.
9
Replacement of Valve,
Actuator, Trims
Содержание PCV-VFQ 21
Страница 18: ...18 VI JA G2 02 Danfoss 11 2006 DH SMT SI Instructions Pilot controlled PCVQ DN 100 DN 250 PN 16 PN 25 ...
Страница 19: ...DH SMT SI VI JA G2 02 Danfoss 11 2006 19 Instructions Pilot controlled PCVQ DN 100 DN 250 PN 16 PN 25 ...
Страница 20: ...20 VI JA G2 02 Danfoss 11 2006 DH SMT SI Instructions Pilot controlled PCVQ DN 100 DN 250 PN 16 PN 25 ...