Assembly; Prior To Assembly; Installation Position; When Installing Observe - Danfoss PCVA Instructions Manual

Instructions
6

Assembly

6 | © Danfoss | 2016.06
PCVA, PCVSAA

6.1 Prior to Assembly:

Depressurized system before
any assembly work !
CAUTION!
• Clean pipeline system.
• Install strainer in front of the controller.
• Install shut-off units in front of and behind
the controller.

6.2 Installation Position

• Installation is only permitted in horizontal
pipelines with the actuators hanging in a
downward position.
6.3 When installing:
• Observe direction of flow.
• Design with welded ends:
pin only
weld
do NOT
weld
• Loads on the valve body and the throttle
element by the pipes are not permitted.

6.4 Impulse Tube Installation

1. See installation scheme, section 6.6.
2. For CU pipes Ø 10 × 1, insert sockets 1 on both
sides.
1
3. Care for correct position of the cutting rings 2.
4. Press impulse tube into the threaded fitting
up to its stop.
5. Tighten union nut, torque 40 Nm
6. Dismount again and check the position of the
cutting rings.

6.5 Insulation

The diaphragm actuators must not be insulated
when insulating system parts.
2
VI.JA.D2.5B