McElroy 1236 User manual

Instruction Sheet: 365550101 11/2/14
1236 Stub End Holder
3655501
Overview
The stub end holder is used when fusing stub ends on thermoplastic pipe using a McElroy
fusion machine. The stub end holder is a self-centering chuck that is held in the jaw of the
fusion machine and in turn, grips the OD of the stub end.
Read Before Operating
Before operating the fusion machine,
please read the fusion machine manual
thoroughly and keep a copy available for
future reference.
Before using the stub end holder, please
read this instruction sheet thoroughly.
Use this instruction sheet with the
operator’s manual to complete the fusion
procedures.
STOP-5-13-09
Fusion Procedures

Instruction Sheet: 365550101 21/2/14
1236 Stub End Holder
3655501
Loading the Pipe
Clean the inside and outside of pipe ends
that are to be fused.
Open the upper jaws and insert pipe into
the jaws of the fusion machine with
applicable inserts installed. Let the pipe end
protrude past the face of the jaw.
PH01761-5-13-09
Prepare Heater
Heater is not explosion proof.
Operation of heater in a
explosive atmosphere without
necessary safety precautions
will result in explosion and
death.
Make sure butt fusion heater adapters are
properly installed.
NOTICE: Non-coated heaters should never be
used without butt fusion heater adapters
installed. Refer to the "Maintenance" section
of the fusion machine manual for installation
procedure.
TracStar® machines only:
Plug heater into receptacle on machine.
Switch the heater on. Adjust heater temperature to required setting.
Allow heater to warm-up to operating temperature.
Rolling machines only:
Switch heater on. Adjust heater temperature to required setting.
Allow heater to warm-up to operating temperature.
Refer to the "Maintenance" section of the fusion machine manual
for instructions how to adjust heater temperature.
PH03261-12-4-13

Instruction Sheet: 365550101 31/2/14
1236 Stub End Holder
3655501
Check Hydraulic Pressure
Refer to the fusion machine’s operator’s
manual for procedures on setting the
hydraulic fusion pressures.
PH04004-12-4-13
Facing the Pipe
Open the carriage.
Move facer into place.
Turn facer on by opening valve next to the
carriage manifold.
Move the selector valve on the hydraulic
manifold block to the top (facing pressure)
position.
The facing pressure should be set as low as
possible while still facing pipe. Excessive
facing pressure can damage the facer. It may
be necessary to adjust the carriage pressure.
Facer blades are sharp and can
cut. Never attempt to remove
shavings while the facer is
running, or is in the facing
position between the jaws. Use
care when operating the facer,
and when handling the unit.
Activate the carriage control valve and move
the carriage to the left to begin facing.
Continue to face the pipe until the rest
buttons on the jaws bottom out on the facer
rest buttons.
PH03534-12-4-13

Instruction Sheet: 365550101 41/2/14
1236 Stub End Holder
3655501
Installing Stub End Holder
Push jaw detent pins back so that it is
flush with the face of the jaw.
Open the movable jaws.
Place the stub end holder into the
lower inner jaw.
Close the upper jaws and clamp the
jaws.
Check to assure that the stub end
holder is parallel to the jaw face.
Configure Stub End Holder
The stub end holder will need to be
configured to the size of the stub end
being fused. There are two positions
on the stub end holder:
A. For a stub end that has a
diameter of 28” or larger.
B. For a stub end that has a
diameter less than 28”.
Remove the four screws holding the jaw
and the long spacer adjacent to the
clamp.
Reposition the jaw and the spacer on
each of the 6 clamping jaws to match
one of the A or B configurations.
A
Jaw
Spacer
Spacer
Jaw
B

Instruction Sheet: 365550101 51/2/14
1236 Stub End Holder
3655501
Loading Stub End
Rotate the handle on the back of the stub
end holder to position the jaws of the holder
according the size adapter or stub end to be
used.
Place the adapter or stub end onto the stub
end holder.
Rotate the handle on the back of the stub
end holder to tighten the jaws against the
adapter or stub end.

Instruction Sheet: 365550101 61/2/14
1236 Stub End Holder
3655501
Facing the Stub End
Move facer into place.
Turn facer on by opening valve next to the
carriage manifold.
Move the carriage control valve to the close
position. Let the facer take off one ribbon of
material.
Use just enough carriage pressure to make
the facer cut.
After the facer has made on full revolution
of uninterrupted cut, shift the carriage into
neutral and let the facer run until it stops
cutting.
After the facer stops cutting, turn the facer
off by closing the ball valve. Open the
carriage so the facer can be removed.
Remove facer.
Bring the carriage together and check the
pipe for proper alignment. If pipe is not lined
up with stub end, tighten the jaw of the pipe
if the pipe is higher than stub end. Ensure
there is no unacceptable gap between the
ends.
Heating the Pipe
Check heater for proper temperature.
Use a clean non-synthetic cloth to clean the
butt fusion heater plate surfaces.
Follow the procedures for “Heat Pipe” in the
operator’s manual of the fusion machine.

Instruction Sheet: 365550101 71/2/14
1236 Stub End Holder
3655501
Opening Jaws
Using the handle on the back of the stub end
holder, rotate the handle to release the end of
the fused pipe from the jaws.
Open the carriage.
Open the jaws.
Remove the fused pipe.
Open the inner jaw and remove the stub end
holder.
If other adapters or stub ends are to be fused,
repeat the step from this instruction sheet and
steps in the fusion machine’s operator’s
manual.
Fusing the Pipe
NOTICE: Failure to follow pipe
manufacturer’s fusion
procedures or appropriate
joining standard may result in a
bad joint.
Follow the procedures for “Fusing the Pipe”
in the operator’s manual of the fusion
machine.