Sealing; Adjustement Of The Throttle Valves; Function Test - Danfoss Pilot-controlled PCVQ Instructions Manual

Instructions
7 Start-up
12
Pilot-controlled PCVQ DN 100 - DN 250 (PN 16, PN 25)

7.8 Sealing

The setpoint adjuster may be sealed.
7.9 Adjustment of the Throttle Valves
Number of throttle valves:
DN 100, 125: 1 ×
DN 150-250 : 2 ×
• Unscrew cover 1.
1
Turning
to the left:
reduces
damping
• Standard adjustment:
Turn in the valve spindle by turning it to the
right by means of a wrench SW5 to its stop.
Then unscrew valve spindle by turning it to
the left by approx. 10 rotations.
• Increase of damping, e.g. necessary in case
of pressure vibrations.
Screw in the valve spindle by turning it to the
right.
• Reduction of damping, e.g. in case of a
control that is too slug.
Unscrew the valve spindle by turning it to the
left.
VI.JA.G2.02
© Danfoss 11/2006

7.10 Function Test

Flow rate
The adjusted flow rate must not be exceeded if
the system is completely open.
If the setting is exceeded in either direction,
check the adjustment as described in section 7.5.
Turning
to the right:
increases
damping
DH-SMT/SI