61
X-VA-MT3809G-MT3810G-eng/541B182AAG/A/2022-10
Brooks Instrument
Installation Manual MT3809G & MT3810G
Section 4 Maintenance
5. To clean the gas damper, unscrew the cylinder head. Then remove the
bolt and carefully take out the small piston so as to not damage the critical
surfaces.
5HDVVHPEOHWKHPHWHUE\DVVHPEOLQJWKHGDPSHUZLWKÀRDWDVVHPEO\
,QVHUWWKHÀRDWDVVHPEO\ZLWKGDPSHULQWRWKHLQOHWERWWRPRIWKHPHWHU
Secure the inlet/bottom screw. While holding the damper in place with a
pin(1/8” diameter), insert and secure the top/outlet screw. Replace the
spiral retaining ring.
e.
6L]HVòÀDQJHGOLTXLGVHUYLFH
1. Remove the meter from the process line and lay the meter horizontal on
a table.
2. Remove the gasket support ring. A bearing puller of the correct size is
recommended to remove the gasket support ring.
3. Loosen the inlet and outlet screws. Remove inlet screw at the bottom of
the meter.
4. Remove the guide vane at the bottom of the meter and gently push the
ÀRDWDVVHPEO\XSDQGRXWWKHWRSRXWOHWVLGH
5HDVVHPEOHE\LQVHUWLQJWKHÀRDWDVVHPEO\LQWRWKHWRSRIWKHPHWHU
5HSODFHWKHJXLGHYDQHDQGVHFXUHWKHÀRDWDVVHPEO\E\WLJKWHQLQJ
the inlet and outlet screws.
f.
6L]HVòÀDQJHGJDVVHUYLFH
1. Remove the gasket support ring. A bearing puller of the correct size is
recommended to remove the gasket support ring.
2. Secure the damper from turning by inserting a 1/8” pin through the top
guide cartridge. While holding the damper in place, remove the top/outlet
screw.
3XVKWKHÀRDWDVVHPEO\RXWWKURXJKWKHLQOHWERWWRP
4. To clean the gas damper, unscrew the cylinder head. Then remove the
bolt and carefully take out the small piston so as to not damage the critical
surfaces.
5HDVVHPEOHWKHPHWHUE\DVVHPEOLQJWKHGDPSHUZLWKÀRDWDVVHPEO\
,QVHUWWKHÀRDWDVVHPEO\ZLWKGDPSHULQWRWKHLQOHWERWWRPRIWKHPHWHU
Secure the inlet/bottom screw. While holding the damper in place with a
pin (1/8” diameter), insert and secure the top/outlet screw. Replace the
spiral retaining ring.
g.
6L]HVDQGDQGÀDQJHGOLTXLGRUJDVVHUYLFHVL]H
RQO\
1. Remove the meter from the process line and lay the meter horizontal on
a table.
/RRVHQWKHÀRDWDVVHPEO\E\¿[DWLQJWZRSOLHUVRQHRQHDFKHQGRIWKH
ÀRDWDVVHPEO\LQOHWJXLGHFDUWULGJH7XUQWRORRVHQZLWKWKHKHOSRIDSLQ
wrench.
&DUHIXOO\UHPRYHWKHFRPSOHWHÀRDWDVVHPEO\DQGFRQLFDOWDSHUDVZHOO
as the spacer bushing (size 16 only) out the inlet/bottom of the meter.
5HDVVHPEOHE\LQVHUWLQJWKHÀRDWDVVHPEO\LQVLGHWKHFRQLFDOWDSHU
(as well as the spacer bushing, size 16 only). Then insert the complete
ÀRDWDVVHPEO\LQWRWKHERWWRPRIWKHPHWHU5HSODFHWKHÀRDWDVVHPEO\
LQOHWJXLGHFDUWULGJHDQGWLJKWHQWKHÀRDWDVVHPEO\LQWRSODFH
2. THREADED CONNECTION
