ARI Armaturen CONA SC-Plus PN40 EN - Manual (Page 9)

Rev. 0040805003 3409 Page 9
Operating and installation instructions
CONA
®
SC/SC-Plus - Ball float steam traps
7.0 Care and maintenance
Maintanance and maintenance-intervals have to be defined by the operator according to
the requirements.
7.1 Cleaning / replacing controller assembly
(refer to Fig. 1 - Fig. 5 page 5 and Fig. 7 - Fig. 9 page 10)
- Dismantle hood (pos. 16) by slackening cheese-head screw (pos. 27).
- Remove dirt from body (pos. 1) and hood (pos. 16); tiny dirt particles can be removed by
flushing out the ducts and rinsing the body (pos. 1).
- If necessary dismantle the float controller (pos. 24) and clean separately or change float
controller.
- Unscrew the hollow-core screw (pos. 24.10) of the float controller (pos. 24) from the body
(pos. 1).
- Pull complete float controller (pos. 24) out to remove, 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 to the
top. If the ball float (pos. 24.16) sinks (i.e. goes under) the complete controller (Pos 24)
should be replaced!
At series 634/635 (version with diaphragm capsule only):
- Pull spring clip (pos. 24.18) off radially and remove diaphragm capsule (pos. 24.17) from
seat (pos. 24.19).
- Clean and inspect diaphragm capsule (pos. 24.17) (see 7.4).
- Form-fit diaphragm capsule (pos. 24.17) to seat (pos. 24.19) and push the spring clip
(pos. 24.18) radially into slot of seat (pos. 24.19), at the same time pushing the two angled
ends of the spring clip legs (pos. 24.18) onto the diaphragm capsule (pos. 24.17).
Series 634/636 PN40 (Y):
- Unscrew strainer plug (pos. 8), remove strainer sleeve (pos. 7) and clean components/
seal faces.
- Fit strainer sleeve (pos. 7), making sure seal faces are clean
- Tighten strainer plug (pos. 8) (see 7.5).
- Replace the sealing rings (pos. 17 and Pos. 11).
- Assemble in reverse order (see 7.5).
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 PN16-40 or
“Rivolta” lubricant and parting agent silver for PN63 onwards).