Ditch Witch JT520, Operator'S Manual

Page: 115 / 151

Complete the Job - 114
JT520 Operator’s Manual
Antifreeze Drilling Unit
CMW
Antifreeze Drilling Unit
Your drilling unit can be left overnight in freezing conditions by circulating a polyproplyene-based antifreeze
(p/n 265-644) through optional antifreeze system before shutdown.
Add Antifreeze
1. Fill antifreeze tank with 1 gal (4 L) of
approved antifreeze.
2. Move carriage to front of drill frame.
3. Position 1-gal (4-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 control fully clockwise to off
position.
7. Start unit and set throttle to slow position.
8. Slowly turn drilling fluid control
counterclockwise to start fluid flow.
9. Run drilling fluid pump until antifreeze comes out of spindle.
10. Turn drilling fluid control fully clockwise to stop flow.
Reclaim Antifreeze
1. Connect remote fluid system. See page 89.
2. Turn on remote fluid system engine.
3. Start drilling unit and run at low throttle.
4. Move carriage to front of drill frame.
5. Position 1-gal (4-L) bucket under spindle.
6. Turn drilling fluid pump on low speed.
7. Turn drilling fluid pump off when drilling fluid comes out of spindle.
8. Pour antifreeze into tank.
IMPORTANT: Antifreeze can be removed from antifreeze tank and disposed of properly or it can be
reused until it is too diluted with drilling fluid to protect against freezing.