ARI Armaturen CONA all-in-one PN40 EN - Manual (Page 10)

Page 10 Rev. 0040808000 0808
Operating and installation instructions
CONA
®
All-in-one
7.0 Care and maintenance
Maintanance and maintenance-intervals have to be defined by the operator according to
the requirements.
7.1 Disassembling/assembling complete shut-off valve assembly
(see Fig. 1 page 6 - Fig. 2 page 6)
- Open spindle (pos. 11) fully as far as the stop.
- Unscrew shut-off valve assembly (pos. 8) from body (pos. 1) by rotating to the left.
- Remove graphite insert (pos. 7).
- Unscrew hollow-core screw (pos. 14) using AWH assembly spanner.
- Remove seat (pos. 3).
- Assemble in reverse order (see 7.6).
7.2 Replacing the packing rings
- Dismantle shut-off valve assembly (pos. 8) as described in 7.1.
- Rotate spindle (pos. 11) in closing direction.
- Slacken cheese-head screw (pos. 18).
- Pull handle (pos. 19) away from spindle (pos. 11).
- Release lock nut (pos. 13).
- Unscrew threaded bush (pos. 12).
- Withdraw spindle (pos. 11) downwards from threaded bush (pos. 12).
- Dismantle cover ring (pos. 20) and packing rings (pos. 5).
- Clean packing chamber and spindle surface.
- Push spindle (pos. 11) into screw fitting (pos. 15) and fit new packing
rings (pos. 5).
- Assemble in reverse order (see 7.6).
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).
ATTENTION !
It is vital to avoid damage to spindle surface and
packing chamber surface.
Fig. 7