Graco HydroShield WABH00 Instructions - Parts Manual page 60

Setup Menus
Pump Pump Stall Pump Stall Test Stall Test Test Procedure Procedure Procedure
Before stall testing the isolation fluid pump, be sure
that air and fluid are supplied to the system.
Prime the system to make sure that there is no air in
the pump. Put the system into Standby mode.
1. Press the Fill button. The system automatically
fills.
Be sure the gun trigger is released. During the
test, the fluid line pressurizes to the active preset
value.
Note
The fluid pressure down stream of the
Merkur AA fluid pump will be whatever
the active preset is currently set to.
It may be desirable to turn it down.
Changing to Preset 0 and setting the
desired pressure is the quickest way to
accomplish this.
2. Press the Stall Test button. The isolation fluid
pump pressurizes and the system monitors the
linear sensor to look for leaks with the pump at
the top of the pump stroke. The screen displays
the text, "Stall Test" and "Test In Progress."
The test takes about 1 minute to complete. If the
test is successful, a confirmation displays on the
screen. The system returns to Standby.
3. Press the Spray button. Dispense between
700-1000 cc so that the pump is about 1/4 full.
4. Be sure the gun trigger is released and press the
Stall Test button. The system is now tested with
the pump near the bottom of the pump stroke.
The test takes about 1 minute to complete. If the
test is successful, a confirmation displays on the
screen. The system returns to Standby.
Note
In addition to the HydroShield, this test
checks the hose connections and gun. If
the test fails, repeat the test with the fluid
pressure set to 0. This will prevent high
pressure from going to the gun and help
determine if the leak is within the system or
not.
60
Maintenance 3: 3: 3: Shuttle Maintenance Maintenance Shuttle Valve Shuttle
Test Test Test
View the isolation valve actuation counts, reset
those counts, and test the valves. When the status
circle next to the item appears yellow, the sensor is
activated.
Shuttle Down: Shuttle Shuttle Down: The valve that is used to drive the Down:
shuttle down, towards the bottom of its movement
or stroke.
Shuttle Up: Up: The valve that is used to drive the shuttle
Shuttle Shuttle Up:
up, towards the top of its movement or stroke.
Shuttle Eject: Shuttle Shuttle Eject: Eject: The valve that is used to eject the
shuttle from its seal, before moving the shuttle up.
Note
To ensure proper operation of the isolation
valve, the system only allows these valves to
be turned on in a specific order.
Valve Resets Valve Resets and Resets and and
3A8492A