Differential Pressure Piston Gauge
Maintenance
35
7.
SLOWLY open the low port
shut off valve
while rotating the hand pump to maintain
pressure near full line pressure.
8.
As the Pump nears the end of stroke, allow the system to decrease to ambient
pressure.
15.
Close the low port
shut off valve
and open the
Pump Isolation Valve
.
Repeat these steps as needed to remove additional air from the system.
Balance Removal/Installation
If the Balance must be removed for maintenance, then remove the main cover only. Do
not remove the screws connecting together the Top Plate, Back Plate and Bottom plates.
Only remove the screws connecting the main cover to the other plates.
1.
Disconnect power.
2.
Remove pressure from the system.
3.
Remove the power and Communications cables from the Balance.
4.
Put the
Oil Isolation Valve
to Equalize.
Note
System ports must be sealed to prevent oil loss.
5.
Raise the Piston and put the
Oil Isolation Valve
to Isolate Mode. This will keep the
Piston Spring clear of the Balance.
6.
Remove the screws from the front and rear of the Balance mounting plate.
7.
Slide the Balance and Mounting Plate out the front of the instrument.
Install the Balance by reversing the steps.
Leveling the Balance
Leveling the Balance is critical when installing the Balance. Be sure that the Mounting
Plate holding screws are secure. Once the Balance is in place AND before the final
Mounting Screws are fixed to secure the mounting plate:
•
Verify that the system is level according to the System Level Vial.
•
Level the Balance using the two disk level feet and the front single point set screw.
Note
Do not use the front Adjustable Pin Feet found on the Balance.
Masses
Should the masses be contaminated, they may be cleaned using either a mild solvent such
as high grain alcohol or soap and water; however, the masses must be dried thoroughly.
Masses should be handled with care during all operations to ensure that wear and damage
do not impact the mass calibrations and, subsequently, the system accuracy.
Summary of Contents for RUSKA 2482
Page 6: ...RUSKA 2482 Users Manual iv...
Page 8: ...RUSKA 2482 Users Manual vi...