60
X-VA-MT3809G-MT3810G-eng/541B182AAG/A/2022-10
Brooks Instrument
Installation Manual MT3809G & MT3810G
Section 4 Maintenance
0HWHU)ORDW&OHDQLQJ07 07
Float replacement procedures are dependent on the meter size,
FRQQHFWLRQW\SHDQGÀXLGJDVYVOLTXLGDSSOLFDWLRQ3OHDVHUHIHUWRWKH
appropriate section below for instructions along with Figures 4-1 thru 4-4.
1. FLANGED CONNECTION
a.
6L]HWRòÀDQJHGOLTXLGRUJDVVHUYLFH
1. It is NOT recommended to disassemble these meters. Contact Service
for repair.
b.
6L]HòÀDQJHGOLTXLGRUJDVVHUYLFH
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.
3XVKWKHHQWLUHÀRDWDVVHPEO\VORZO\GRZQZDUGDQGRXWRIWKHPHWHU
inlet by pushing from the top with a round bar stock (3/4" or 19 mm
diameter).
5HPRYHWKHÀRDWVQDSULQJWRFOHDQLQGLYLGXDOÀRDWDVVHPEO\SDUWV
5HDVVHPEOHWKHPHWHUE\UHDVVHPEOLQJWKHÀRDWDVVHPEO\DQG
inserting it
into the bottom of the meter. Replace the spiral retaining
ring in the meter inlet.
c.
6L]HòÀDQJHGOLTXLGVHUYLFH
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
/RRVHQWKHÀRDWDVVHPEO\ZLWKWZRVFUHZGULYHUVRQHRQHDFKHQGRIWKH
meter and turn to 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\WLJKWHQLQJWKH
inlet and outlet screws. Replace the spiral retaining ring in the meter inlet.
d.
6L]HòÀDQJHGJDVVHUYLFH
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. 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