<5. Maintenance>
5-5
IM 02C01B04-01EN
5.5 To Remove Bellows Capsule
1. Insert 9/64" hex-key wrench in opening and
loosen, but do not remove flexure cap screw.
Refer to Figure 5.8.
2. Remove the 2 body nuts and lift off pressure
connection block from transmitter.
Do not remove bolts.
3. Lift out capsule.
Do not bend flexure.
F0516.ai
Connection
block
Capsule
Hex-key
wrench
Figure 5.7
Remove Bellows Capsule
5.6 To Replace Bellows Capsule
When capsule is replaced, use new O-rings.
1. Lubricate O-rings with a thin film of Vaseline or
similar lubricant. Position larger ring in recess in
body and smaller ring over shoulder of capsule.
2. Insert capsule with flexure horizontal against
bottom of force bar.
3. Loosely screw cap screw into force bar to clamp
flexure lightly.
4. Position connection block over bolts and tighten
nuts gradually to 55 N·m torque.
5. Tighten flexure against bottom of force bar as
described in Flexure Cap Screw Adjustment
(Refer to section 5.1.4), then calibrate
transmitter (Refer to section 5.1.2).
F0517.ai
O-ring
Connection block
Capsule identification
is stamped on face.
F0518.ai
Force bar
Flexure
Washer
Cap screw
9/64" wrench
Figure 5.8
Replace the Bellows Capsule.
5.7 To Clean or Replace Screens
F0519.ai
If fine screen air filters
become clogged,
remove with pointed
tool and replace.
Remove coarse screen
filter with pointed tool
for cleaning or replacement.
Figure 5.9
Clean or Replace Screens
5.8 To Remove Pneumatic
Amplifier
To remove pneumatic amplifier, remove 2 large
screws and pry off. A gasket is furnished with each
replacement amplifier.
When replace the pneumatic amplifier, tighten the
screws by the torque of 1.6 to 1.8 N·m (16 to 18
kgf·m).
For servicing details, refer to Appendix 1.
F0520.ai
Screw
Figure 5.10 Remove Pneumatic Amplifier
