Bird Technologies 6156 - Manuale (Pagina 27)

3. Disconnect the dc plug from the volt-
meter block.
4. Place the load in a vertical position
with the voltmeter up.
5. Loosen the 8-32 x 1 inch screw from
the clamping band and remove the
clamping band.
6. Lift the resistor voltmeter assembly
out of the radiator. Allow the coolant
to drain off before removing the as-
sembly from the unit..
7. Inspect the O-Ring seal. Do not reuse
if it is no longer pliable or shows signs
of surface cracks.
8. Inspect the coolant; if it appears to be
contaminated replace it.
9. Reverse the above procedure to re-
place the assembly.
Diaphragm
Replacement
To replace a faulty diaphragm use the following procedure.
1. Stand the wattmeter vertically, with
the back end up.
2. Loosen the clamp screw until the
clamping band is released.
3. Remove the diaphragm cap and care-
fully lift the diaphragm from the back
end of the radiator tank.
4. Reverse the above procedure to assem-
ble the unit.
+
Note: The coolant level should be about one
inch below the top of the radiator cylinder. The
coolant should be a clear to a light yellow color.
If it is not, it may be contaminated and should
be replaced.
Meter
Replacement
The microammeter is shock mounted in its housing. Do not
attempt to repair the meter if it fails. Follow the procedure
below to replace it.
1. Remove the meter case from the load.
15
Maintenance