50-42 Operation D20x22 Series II Navigator HDD
Step 1: Connect wash wand to drilling fluid pump quick coupler (1).
Step 2: Turn water system on.
Step 3: Wash drill unit to remove accumulated polymers and dirt.
Step 4: Shut off water system.
Step 5: Point wash wand away from people and squeeze handle to release water
pressure remaining in wand.
Step 6: Remove wash wand from drilling fluid pump quick coupler and store on
transport vehicle.
Step 7: Install cap on drilling fluid pump quick coupler to prevent dirt from
entering high pressure fluid lines.