17
PI-121
January 2020
3.7 If necessary, clean cartridge in a mineral-based solvent (diesel fuel,
kerosene, paint thinner, etc).
3.8 Clean the control valve body internal cavities and the actuator cylin-
der mechanism and cavities, if necessary, to remove all dirt and debris
from these areas.
3.9 Apply grease to the external seals and reinstall the cartridge. Wrench
tighten the valve plug to at least 30 ft-lbs. torque.
3.10 Verify that lubricator is filled to the recommended fill line with air
tool oil
3.11 Connect the Multi-Mode Valve to the waterblast system as instruct-
ed in Section 4 with water and air supplied, but make sure that there are
no nozzles or plugs installed in the control gun or the Multi-Mode Valve.
Adjust air pressure to between 80 psi and 90 psi using the control valve
regulator knob.
3.12 Engage the waterblast pump with the control gun triggers released.
At that point, the system pressure should be below 200 psi, and all flow
should be exiting the system through the mode configuration port (dump
port) of the Multi-Mode Valve. No water should be travelling through the
control gun.
3.13 Briefly squeeze both gun triggers to divert all flow from the dump
port to the control gun. No water should be exiting the system through
the dump port of the Multi-Mode Valve. The system pressure should still
remain below 200 psi.
3.14 Check the system for any air leaks by squeezing the gun triggers
for two or three seconds at a time while another person places a hand
around each air connection to ensure that there is no escaping air.
3.15 All air hoses should be intact and free of cracks or holes.
3.16 Air regulator and oiler should be secured to the base and fully
operational.
