TAPMATE
™
XL 424 OPERATING MANUAL
22
PERFORMING THE TAP (cont.)
4. Check the distance that the Brake Tube has moved on the scale of the Thrust Tube.
This is the distance that the Shaft Nose (or PVC Pilot) and Cutter has traveled.
This travel distance, including the distance that the Shaft Nose (or PVC Pilot) extended
out from the Adapter Bell (see Step 3 on page 18), should be approximately equal to the
distance that was measured in Step 6 on page 19.
NOTE: If you had to use the Lead Nut, be sure to include its travel distance in
calculating Cutter Travel.
If this distance differs from your earlier measurement, several things could be causing
the discrepancy. Check for the most common problems:
• Is the Cutter hitting the Valve’s Seat Ring?
• Is the Valve completely open?
• Is there misalignment between the Valve and the Tapping Sleeve Neck?
• Is the TapMate XL‑424 in alignment with the Valve?
NOTE: You need to identify and correct any problems prior to proceeding with
the tap.
5. Check that the Adapter Bell (on 14"‑24" Adapters) Exhaust Valve is in the Closed
Position. If using this Valve to flush out chips, connect a suitable Hose and position it
where desired (Hose not included).
