Inspecting Threads - RIDGID 600-I Manual

600-I/690-I Power Drives
the dies engage the pipe, threads will be cut as the
dies pull themselves onto the end of the pipe.
Always firmly hold the power drive handle to resist the
handle forces. Support devices can slip and allow the
power drive to move. The ON/OFF switch can be
released at any time to shut off the power drive.
13. Stop pushing on cover plate and use oiler to apply a
generous quantity of RIDGID Thread Cutting Oil to the
area being threaded. This will lower threading torque,
improve thread quality and increase die life.
Figure 14 – Threading Pipe
14. Depress ON/OFF switch until end of the pipe is even
with edge of the dies and release the switch. Let the
power drive come to a complete stop.
Figure 15 – Pipe Even with Edge of Dies
15. Reverse the F/R slide switch and actuate the ON/OFF
switch to remove Die Head from the threaded pipe.
Hold onto the power drive handle firmly to resist the
handle forces developed while backing off the Die
Head.
Change position of the F/R slide switch only
NOTICE
when the ON/OFF switch is re leased. Allow the power
10
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drive to come to a complete stop before reversing the
direction with the F/R slide switch. This will reduce the risk
of power drive damage.
16. Release the switch and remove the power drive and
17. With dry hands unplug the power drive.
18. Wipe oil and debris off the threads and out of the die

Inspecting Threads

Figure 16 – Checking Thread Size
Die Head from the pipe.
head, taking care not to cut yourself on sharp debris
or edges. Clean up any oil spills in the work area.
1. Remove any oil, chips or debris from the thread.
2. Visually inspect thread. Threads should be smooth
and complete, with good form. If issues such as
thread tearing, thin threads, or pipe out-of-round-
ness are observed, the thread may not seal when
made up. Refer to the "Troubleshooting" chart for
help in diagnosing these issues.
3. Inspect the size of the thread. The preferred method
of checking thread size is with a ring gauge. There are
various styles of ring gauges, and their usage may dif-
fer from that shown in Figure 16 .
• Screw ring gauge onto the thread hand tight.
• Look at how far the pipe end extends through the ring
gage. The end of the pipe should be flush with the
side of the gauge plus or minus one turn. If thread
does not gauge properly, cut off the thread, adjust the
die head and cut another thread. Using a thread
that does not gauge properly can cause leaks.
Thin Ring
Gauge
D
Flush
One Turn Large
(Basic Size)
(Maximum Size)
Checking Threads With Ring Gauge
• If a ring gauge is not available to inspect thread
size, it is possible to use a new clean fitting repre-
sentative of those used on the job to gauge thread
size. For 2" and under NPT threads, the threads
should be cut to obtain 4 to 5 turns to hand tight
engagement with the fitting and for 2" and under
BSPT threads it should be 3 turns.
D D
One Turn Small
(Minimum Size)