ARI Armaturen CONA M PN40 EN - Manual (Page 8)

Page 8 Rev. 0040804002 3209
Operating and installation instructions
CONA
®
M - Thermostatic 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 page 4 - Fig. 5 page 5)
- Depressurize steam trap (supply line, with back pressure also isolate drain line).
- Loose cover bolting (Pos. 27 or 28) and disassemble.
- Pull spring clip (Pos. 5) off radially and remove diaphragm capsule (Pos. 4) from seat
(Pos. 3) or nozzle piston (Pos. 10).
Series 616 PN16:
- Remove nozzle piston (Pos. 10), pull off disc piston (Pos. 9), remove strainer (Pos. 2) if
necessary.
- Clean body (Pos. 1) and strainer (Pos. 2) as well as all seal faces.
- Clean diaphragm capsule (Pos. 4) and check sealing components at seat (Pos. 3) and
nozzle piston (Pos. 10). If the operator thinks there is unwarranted leakage of steam at the
steam trap, we recommend replacing the membrane capsule (Pos. 4). If the seal faces at
the seat (Pos. 3) and nozzle piston (Pos. 10) are damaged, these should also be replaced
with new components.
- Insert strainer (Pos. 3), making sure seat/body sealing faces are clean.
- Screw seat (Pos. 3) in and tighten (see 7.3).
- Fit diaphragm capsule (Pos. 4) to seat (Pos. 3) or nozzle piston (Pos. 10) and push the
spring clip (Pos. 5) radially into slot of seat (Pos. 3) or nozzle piston (Pos. 10), at the same
time pushing the two angled ends of the spring clip legs (Pos. 5) onto the diaphragm
capsule (Pos. 4).
BR616 PN40:
- Clean diaphragm capsule Type B (Pos. 4) and check the functions (refer to item 7.2)
- Control sealing contours at seat (Pos. 3) and diaphragm capsule (Pos. 4) and replace if
damaged.
- Assemble in reverse order (see 7.3).
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).