REPLACING A BROKEN MANOMETER TUBE
Occasionally the Glass Manometer tube will get damaged in transit and must be replaced.
To change the tube follow the steps given below.
Open the four retaining screws to remove the front panel of the instrument.
Observe the polarity of the PVC pipes connecting the manometer to the
pressure taps of the Orifice Plate. The glass tube of the manometer is connected
to the lower nozzle while the manometer tank is connected to the upper nozzle
of the filter adaptor casting. Remove both the PVC pipes form the orifice plate
pressure taps.
Open the two screws retaining the upper end coupling of the manometer tube.
The two screws near the bottom of the tube retain the tank assembly. On
removing the tank assembly and upper coupling the tube support will open out
and the manometer tube will come out.
Check that the seal rings rubber (O-rings) in the upper coupling and tank
opening are in place.
Apply a little silicone grease on the ends of the Manometer tube and insert one
end firmly in the tank assembly and the other into the upper coupling.
Place the tube support reflector behind the manometer tube and mount the
assembly at its place on the front panel.
Re-connect the PVC tubes connecting the manometer assembly to the pressure
taps of the Orifice plate.
Mount the front plate on the main instrument and re-fill manometer fluid into the
system as per instructions in chapter III of this manual.
Note:-
1. No warranty is given on parts made up of Glass.
2. Warranty is also not applicable for moving parts that are expected to wear
and tear with normal operation such as Blower, Bearing and Belt etc.