Changing Operating Speeds - RIDGID 535M Manual

down onto pipe. Make sure that the pipe is centered in
the inserts. Use repeated and forceful counterclockwise
spins of the handwheel to secure the pipe in front
chuck.
For Auto Chuck machines: Move the REV/OFF/ FOR
(2/0/1) Switch to the FOR (1) position and step on the
foot switch. The machine will automatically center and
grip the pipe or stock. If pipe is chucked off center, run
the machine in REV to release and re-chuck. Do not
handle rotating pipe. Auto chuck machines only grip
pipe when rotating.
5. Assume a proper operating position to help maintain
control of the machine and pipe (See Figure 17).
• Stand on the REV/OFF/FOR Switch side of the
machine with convenient access to the tools and
switch.
• Be sure that you can control the foot switch. Do not
step on foot switch yet. In case of emergency, you
must be able to release the foot switch.
• Be sure that you have good balance and do not
have to overreach.
Figure 17 – Operating Position

Changing operating Speeds

535 Threading machines come in single and multiple
speed versions. Any speed may be used for cutting and
reaming.
Threading Speed Selection
• Up to 36 RPM – Suitable for threading up to 2" pipe,
999-998-086.09_REV. C
535 Manual Chuck/535 Auto Chuck Threading Machines
bolt threading, high torque applications like stainless
steel and high hardness material.
• 46 RPM – Suitable for threading up to 2" pipe. High
Speed Dies are recommended.
• 54 and 58 RPM – Suitable for threading up to 1
High Speed Dies are recommended.
• Higher than 58 RPM – Not suitable for threading. Use
for cutting and reaming only.
If the machine stalls while operating, immediately release
foot switch and change to low speed. Do not change
speed while cutting, reaming or threading.
If equipped with a shifter (see Figure 18), to shift:
Figure 18 – 535 Shifter
1. Pull the shifter knob out.
2. Move the shifter to the desired speed position and
release the knob into detent.
If shifter cannot be moved, leave in current speed set-
ting. Depress and release the foot switch, allow the
machine to come to a full stop and try shifting again.
Do not shift while the machine is rotating.
400 Volt three phase 535 machines can be operated in 35
or 70 rpm. This is controlled by the machine switch, which
is marked 2-1-0-1-2. 0 is the OFF position, 1 is 35 rpm (For -
ward and Reverse), 2 is 70 rpm (Forward and Reverse).
See Figure 19.
Figure 19 – 400 V 3 phase Speed and Direction Control
Shifter
Switch Position
OFF
REV FOR
0
1 1
35 RPM
2 2 70 RPM
1 / " pipe.
4
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