Semi-Auto Fusion
Semi Auto fusion allows the operator to perform all fusion operations to
make a manual fusion using the Fusion Control Pendant.
•
Tap Semi-Auto to manually set the fusion operation pressures.
IMPORTANT:
The Operation - General section must be completed before
starting a semi-auto fusion.
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Operation - Semi-Auto Fusion
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Set Pressures
Use the pressure selector control on the Fusion Control Pendant to select between
facing, heating, and fusing pressures.
The theoretical fusion pressure can be determined using the fusion pressure calculator
that is supplied with the machine or by using the McCalc® app is available for
iOS, Android, Windows Phone and PC devices. The fusion pressure can also be
determined by referring to the section Determining Fusion Pressure.
Always add drag pressure to the theoretical fusion pressure.
Gauge (Fusing) Pressure = Theoretical Fusing Pr Drag Pressure
To make pressure adjustments for each selection, choose either of these options:
•
On the Fusion Control Pendant, turn the carriage pressure adjustment knob to the
desired pressure setting.
•
On the Pendant Handheld Computer, tap the Pressure button and
input the desired pressure setting.
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Determine Drag Pressure
Determine drag pressure using the following steps:
1) Move the carriage so that the faced pipe ends are
approximately 2" (50mm) apart.
2) Shift (
A
) to the middle (neutral) position.
3) Shift (
B
) to the middle heating position, and adjust (
C
) to its
lowest pressure by turning the knob counterclockwise.
4) Shift (
A
) to the left.
5) Gradually increase the pressure by turning (
C
) clockwise slowly.
Increase the pressure until the carriage just begins to move.
6) Quickly reduce pressure by turning (
C
) counterclockwise until the
carriage is just barely moving.
7) View pressure on the handheld computer (
D
). Record this actual
drag pressure.
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A - Carriage Directional Control
B - Pressure Selector Control
C - Carriage Pressure Adjustment Knob
D - Handheld Computer
CD018
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B
A
C
D
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