TDW POLYSTOPP, Инструкция по эксплуатации и обслуживанию

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TDW France-22-E-03-09
4.0 Tapping the Line
4.1 Making the Tap
A. Turn feed screw adjusting cap
counterclockwise to relieve spring tension.
See Figure 25.
Figure 25. Turn Feed Screw Adjusting Cap
B. Install lower-in crank in top of machine and
turn counterclockwise, lowering boring bar
until pilot drill touches top of pipe. The
computed lower-in distance (measurements
A and B) should appear in the travel indicator
port. Retract boring bar one revolution and
remove hand crank.
Note: One revolution of the hand crank will lower
the boring bar 1/8 inch. If, for example, the
lower-in distance was 20 inches, it would
require 160 revolutions of the hand crank to
lower the boring bar to this point.
CAUTION: Do not use the air motor or
hydraulic motor to lower the boring bar.
Damage to the cutter and pilot may
occur.
C. Open air control valve (Figure 26) to start
rotation of boring bar. Adjust filter regulator
knob until desired rpm is obtained. The
recommended RPM is between 15 & 20
RPM.
Figure 26. Open Air Control Valve
Note: RPM can be checked easily by observing
the numbers as they come around in the travel
indication port. Count for 15 seconds and
multiply by four to determine rpm.
CAUTION: Speeds higher than 37 rpm may
cause damage and premature wear to
the air motor.
E. Turn feed adjusting cap clockwise to feed pilot
into pipe. Stop adjustment when air motor
begins to load up.
F. As the pilot drill penetrates the pipe wall,
allow line pressure to completely fill valve
and fittings. Blow line liquid or gas through
bleeder valve a few seconds to purge all air.
Close bleeder valve tightly. The machine can
continue tapping during the air purging
process.
WARNING: Vent pressure bleed valve away
from work area and personnel.
Stand clear of vent when
bleeder
valve is opened,
otherwise personal injury can
result from blowing material.
G. If the machine stalls, stop and retract cutter a
few turns of the hand crank and resume
tapping.
H. When tap is complete, check number on
boring bar in travel indication port to make
sure computed travel distance has been
reached.
I. Turn off air control valve or close hydraulic
valve to stop boring bar rotation.
J. Turn feed adjusting cap fully counter-
clockwise to stop feed.
K Place hand crank on top of machine and turn
clockwise, fully retracting cutter into tapping