Brooks Instrument BM02 - Manual (Page 23)

4-3
Installation and Operation Manual
X-PD-BM01-02-eng
Part Number: 541B042AHG
March, 2008
Maintenance
Brooks ® Models BM01 and BM02
4-4 Disassembly - Flowmeter (Refer to Figure 4-1)
Never use any gripping tool on any internal component of the meter. Do not
drop any part of the meter or damage can occur.
1. Remove four (4) screws (Item 3) and remove meter body cover (Item 2).
2. Remove O-ring (Item 5) and inspect. (Replace O-ring if damaged).
3. Remove rotors (Item 4), clean and inspect (Replace rotors if damaged).
4-5 Cleaning
Clean and inspect all parts removed from the flowmeter assembly. It is
recommended to wash all parts thoroughly in a light weight solvent. Dry
thoroughly with compressed air and/or lint free wipers.
4-6 Assembly - Flowmeter (Refer to Figure 4-1)
It is recommended that new O-Rings be installed upon assembly. No
lubricant is recommended or required for the O-Rings.
The following steps are required for meter assembly.
1. Place the rotors (Item 4) into the meter body. The rotors to be at 90° to
each other (As per diagram).
NOTE: The rotor with magnets must be placed in the body on the same side
as the groove on the body (Refer to diagram).
2. Lightly rotate the rotors (Item 4) by hand (They must rotate freely).
3. If the rotor (Item 4) teeth mesh is not correct, disengage one rotor (Item 4)
and rotate it one tooth clockwise or counterclockwise, then engage
teeth again. Repeat this procedure until the rotors (Item 4) are properly
meshed and will turn freely through several revolutions.
4. Install O-Ring (Item 5).
5. Replace meter cap (Item 2).
NOTE: The grove on the cover must line up with the groove on the meter
body (Refer to Figure 4-1).
6. Replace four screws (item 3).