Emerson ASCO 290 Serie Instructions De Mise En Service Et D'entretien page 2

X29050914900200 (NPT 3/4") / X29050914900100 (G 3/4") / 29060066 (G 3/4")
Replacement of the Ø 50 mm operator
(Fig. I and Fig. II)
Actuator Kit: X29054586000100
1. Purge the circuit and shut off the pilot air supply.
2. Disconnect the pilot hose.
3. Unscrew the cap on the optical indicator with a 30 mm
open-ended spanner (ref. 1).
4. Unscrew the red optical indicator with a 6 mm socket
spanner (ref. 2).
5. Hold support base with strap wrench/ universal pliers/
crescent wrench and unscrew cap (rep. 3) with 17mm hex
(See picture below).
6. Remove the spring (ref. 4) and unscrew the piston
nut/lock washer assembly with an 10 mm socket spanner
(ref. 5). Remove the lock washer (ref. 6).
7. Completely unscrew the gland (ref. 7) with a 36 mm
open-ended spanner and remove the operator.
8. If necessary, dismantle the fixed valve (ref. 8) and
change the gasket (ref. 9)
Seal Kit: X29050914900300
Installation and Maintenance Instructions
ASCO Series 290 valves for control in wine tanks
TM
Visit our website at www.emerson.com/asco
9. Refit the complete new operator (Actuator Kit:
X29054586000100) by carrying out the above steps in
the reverse order. Refit the parts and tighten them to the
recommended torque values:
Ref. 1 = 0.5 daN
Ref. 2 = 0.1 daN
Ref. 3 = 3 daN
Ref. 5 = 0.5 daN
Ref. 7 = 8 daN
Ref. 8 = 3 daN
Lightly grease the O-ring (ref. 10) installed on the valve
body (use Total CERAN LT grease)
Replacement of the Seals
Seal Replacement Kit: X29050914900300
Follow Actuator kit replacement steps 1-7 and the additional
steps below:
1. Remove four 5 mm allen bolts located at bottom of valve body.
2. Split body in half to expose 2 bottom discs.
3. Remove two 8 mm nuts from stainless stem.
4. Replace 4 seals.
5. Install in reverse.
2
EN