Brooks Instrument 1100 Series - Manual (Page 24)

4-2
Installation and Operation Manual
X-VA-1110-1140-eng
Part Number: 541B040AAG
September, 2012
Brooks ® 1110 and 1140 Series
Section 4 Maintenance and Cleaning
4-2 Disassembly and Reassembly
Note: Step number preceded by an asterisk (*) apply only to rod guided
floats.
A. Disassembly
1. Remove the four bolts attaching each window frame. Carefully remove
both windows and frames.
2. Loosen, but do not remove, the four gland bolts in each end fitting.
3. Remove the four bolts attaching each side plate. Remove the side
plates.
4. Remove the four gland bolts in each end fitting, being careful to keep
the gland followers from sliding down the glass tube.
5. Remove the tube and packing assemblies from the end fittings.
6. Remove the inlet packing (narrow end), both gland rings, polycarbonate
sleeve, Size 7 (1/2") and larger, and gland followers from the tube.
7. Remove the float from the tube.
*8. Remove the nuts on the guide rod by using two wrenches; one to hold
the inner nut, and one to remove the outer nut from the rod.
*9. Hold the cartridge in position and remove the inner nut. Remove the
cartridge and gasket.
*10.Remove the float and the guide rod from the tube.
B. Reassembly
*1.Install a cartridge and gasket on the guide rod. Insert the guide rod in
the tube. Install the float, cartridge gasket, and cartridge on the guide
rod and secure with one nut. Refer to Figure 1-2 for the correct
orientation of the float.
*2.Tighten the single guide rod nut until the rod is under slight tension.
*3. Hold the single guide rod nut in position. Install and tighten the second
nut against it.