Brooks Instrument 1307 - Manual (Page 17)

4-1
Maintenance
Maintenance
4-1 General
Model 1307 flowmeters require little maintenance except routine cleaning.
It is necessary to remove the flowmeter from the line for tube and float
cleaning. The tube and float may be cleaned with a soft absorbent swab.
To disassemble the flowmeter proceed as follows:
a. Remove the front and rear window shields.
b. Remove four (4) screws connecting the bottom end fitting to the side
plate.
c. Carefully pull the end fitting and tube away from the side plates and top
fitting. DO NOT cock the tube when removing it from the top fitting.
d. Remove the polycarbonate sleeve surrounding the flow tube.
e. Remove the float from the tube.
Do not allow the float to fall out of the metering tube. A damaged
float will affect the accuracy of the meter. Be careful not to break the
tube by pulling on it at an extreme angle or applying excessive force.
CAUTION
f. Using a suitable solvent, carefully swab and flush the inside of the
metering tube. Clean the float and blow dry all parts thoroughly.
Anytime the meter is removed for service, new O-rings should be
installed in both the inlet and outlet end fittings.
NOTICE
Reassemble the flowmeter as follows:
a. Carefully install the float in the tube with the metering edge up. Refer to
Figure 3-1 to determine the metering edge location.
b. Carefully hold the tube, (with float installed), sleeve, and end fitting, and
push the tube on the top fitting.
c. Tighten the four (4) side plate screws in place.
d. Install the front and rear windows.
WARNING
Pressure test the meter before returning it to service. Hydrostatic
pressure testing should be performed by qualified personnel or
serious injury and/or damage to the equipment can result.
Section
4