Danfoss Pilot-controlled PCVQ Instructions Manual page 11

Instructions
7 Start-up
DH-SMT/SI
Pilot-controlled PCVQ DN 100 - DN 250 (PN 16, PN 25)
Adjustment by means of a flow rate
measuring device:
Procedure
1. Prior to the adjustment of the flow rate,
start the system in accordance with the
instructions given in section 7.4.
2. The shut-off units 1 and the control units 2
must be completely opened so that the flow
rate is not restricted by a unit.
The adjustment can also be carried out via a
bypass 3.
P1
1
PCVQ
P2
3. Unscrew cap nut 4.
4
4. Loosen the counter nut 5.
VI.JA.G2.02
© Danfoss 11/2006
5. Adjust the flow rate limitation by turning the
adjusting throttle 6:
Turning to the right 7, reduces the flow rate.
2
Turning to the left 8, increases the flow rate.
3
6. Observe the flow rate indicator.
7. After having completed the adjustment,
tighten the counter nut without changing the
position of the adjusting throttle.
8. Re-screw the cap nut.
5
9. The cap nut can be sealed.
The flow rate adjustment is completed.
7
6
8
11