CALDER 21001119, Operating Manual

Page: 36 / 64

Page 22 Pilot Valve Tester Operating Manual
4.5 P
URGING WATER FROM THE VESSELS AND TEST SYSTEM
Do the following to purge the system of water:
1. Open the Block Valve.
2. Set the Select Valve to Drain. Some water may begin draining at point.
3. Set the Vessel Selection Valve to Pilot Vessel.
4. Open the Inlet/Outlet Valve for the supply hose at pressure source.
5. Slowly turn the Test Pressure Control until water begins draining from the
Drain Port.
6. When only air is emitted from the Drain Port, set the Select Valve to
Closed.
7. If Port P is not connected to anything, do the following:
a) Set the Select Valve to Port P to purge water from it.
b) When only air is emitted from Port P, set the Select Valve to Closed.
8. Set the Vessel Selection Valve to Dome Vessel.
9. Open the Drain Valve. Water will begin draining from the Drain Port. If
water is not draining, increase the pressure at the Test Pressure Control.
10. When only air is emitted from the Drain Port, close the Drain Valve.
11. If Port D is not connected to anything, do the following:
a) Open the Block Valve to Port P to purge water from it.
b) When only air is emitted from the Port D, set the Select Valve to
Closed.
12. Set the Vessel Selection Valve to Closed.
13. If Port P is Connected to Port D, do the following:
a) Set the Vessel Selection Valve to Pilot Vessel.
b) Set the Select Valve to Port P.
c) Open the Block Valve and Drain Valve.
d) If water is not draining, increase the pressure at the Test Pressure
Control.
e) When only air is emitted from the Drain Port, close the Block Valve
and Drain Valve.
f) Set the Select Valve and Vessel Selection Valve to Closed.