28 PI-121 January 2020
6.0 MULTI-MODE VALVE MAINTENANCE
6.1 REPLACING THE CARTRIDGE
1. Shut down unit and turn off water and air to the Multi-Mode Valve.
2. Unscrew cartridge plug with a wrench.
3. Pull the plug away from the body to remove cartridge. It may be nec-
essary to wiggle the plug back and forth to work the cartridge seals
through the bore.
4. Slide the cartridge over the retaining ball of the plug to remove.
5. Apply a thin film of grease or O-ring lubricant to the external seals of
the new cartridge.
6. Slide the new cartridge into slot of the plug.
7. Apply anti-seize thread lubricant to the threads of the plug.
8. Slide cartridge and plug into Multi-Mode Valve body. It may be neces-
sary to wiggle the plug back and forth to work the cartridge seals
through the bore.
9. Tighten to at least 30 ft-lbs. and make sure plug shoulder seats
against valve body.
Use only the correct valve/seat cartridge to repair your
40,000 psi Remote Control Valve. Failure to use the correct pressure-rat-
ed cartridge could result in cartridge failure and possible BI-MODE valve
damage and operator injury.
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