ARI Armaturen Air vent PN 40 EN - Manual (Page 7)

Rev. 0040807004 2714 Page 2-7
Operating and installation instructions
Automatic air vent
6.0 Putting the valve into operation
7.0 Care and maintenance
Maintenance and maintenance-intervals have to be defined by the operator according to
the requirements.
7.1 Cleaning / replacing controller assembly
(refer to Fig. 1 page 4- Fig. 2 page 4 and Fig. 3 page 8)
- Dismantle the hood (Pos. 16) by slackening cheese-head screw (Pos. 27).
- Remove dirt from cover (Pos. 6) and hood (Pos. 16); tiny dirt particles can be removed by
flushing out the ducts and rinsing the cover (Pos. 6).
- If necessary dismantle the float controller (Pos. 24) and clean separately or replace the
float controller.
- Unscrew the hollow-core screw (Pos. 24.10) of the float controller (Pos. 24) from the cover
(Pos. 6).
- Pull complete float controller (Pos. 24) out, taking care with the sealing ring (Pos. 11).
- Check lifting force of ball float (Pos. 24.16) by immersing the whole controller (Pos. 24) in
a water bath. When immersed in the water bath the ball float (Pos. 24.16) must float. If the
ball float (Pos. 24.16) sinks (i.e. goes under) the complete controller (Pos 24) should be
replaced.
ATTENTION !
- Before putting the valve into operation, check material, pressure, temperature
and direction of flow.
- Regional safety instructions must be adhered to.
- Residues in piping and valves (dirt, weld beads, etc.) inevitably lead to leakage.
- Touching the valve when it is operating at high (> 50 °C) or low (< 0 °C) media
temperatures can cause injury.
Affix warning notice or protective insulation as appropriate!
Before putting a new plant into operation or restarting a plant after repairs or
modification, always make sure that:
- All works has been completed!
- The valve is in the correct position for its function.
- Safety devices have been attached.
ATTENTION !
- refer to item 10.0 and 11.0 prior to dismantling and repair work!
- refer to item 6.0 before restarting the plant !
Prior to installation, threads and seal faces should be coated with temperature-
stable lubricant (e.g. “OKS Anti-Seize Paste” white/metal-free for PN 16-40 or
“Rivolta” lubricant and parting agent for PN 63 onwards).