Ditch Witch JT1220 - Manual (Page 157)

Complete the Job - 156
JT1220 Mach 1 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 optional antifreeze system before shutdown.
Add Antifreeze
1. Fill antifreeze tank with 3 gal (11 L) of
approved antifreeze.
2. Move carriage to front of drill frame.
3. Position 3-gal (11-L) bucket under spindle.
4. Install plug at quick coupler for drilling fluid
pump (shown).
5. Open valve between antifreeze tank and
head of drilling fluid pump.
6. Turn drilling fluid potentiometer
counterclockwise to zero position.
7. Start unit and set throttle to slow position.
8. Slowly turn drilling fluid potentiometer
clockwise until indicator light comes on. If
light does not come on, press drilling fluid pump switch.
9. Run drilling fluid pump until antifreeze comes out of spindle.
10. Turn drilling fluid potentiometer counterclockwise to zero position.
11. Open valve below operator’s console
(shown).
12. Slowly turn drilling fluid potentiometer
clockwise until indicator light comes on.
13. Close valve below console when antifreeze
runs out of valve below console.
14. Turn drilling fluid potentiometer
counterclockwise to zero position.