Ditch Witch JT922 - Manual (Page 123)

Complete the Job - 122
JT922 Operator’s Manual
Antifreeze Drilling Unit
CMW
Antifreeze Drilling Unit
Your drilling unit can be left overnight in freezing conditions by circulating a polypropylene-based antifreeze
(p/n 265-644) through fluid system before shutdown.
Add Antifreeze
1. Drain remaining water from the onboard tank.
2. Pour 3 gal (11 L) of approved antifreeze into
the onboard tank.
3. Move carriage to front of drill frame.
4. Position 3-gal (11-L) bucket under spindle.
5. Install plug at quick coupler for drilling fluid
pump (shown).
6. Open valve between antifreeze tank and head
of drilling fluid pump.
7. Turn drilling fluid valve clockwise to zero
position.
8. Start unit and set throttle to slow position.
9. Slowly turn drilling fluid valve counterclockwise until pump runs slowly.
10. Run drilling fluid pump until antifreeze comes out of spindle.
11. Turn drilling fluid valve clockwise to zero position.
12. Open valve below operator’s console
(shown).
13. Slowly turn drilling fluid potentiometer
clockwise until pump runs slowly.
14. Close valve below console when antifreeze
runs out of valve below console.
15. Turn drilling fluid potentiometer
counterclockwise to zero position.