Mathey Dearman Band Machine - Manual (Page 12)

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5.4 - Installation of the Torch in the Band Crawler
5.4.1 Turn the Set Screw (Figure 6 item 7) counterclockwise until the Torch Holder Eccentric (Figure 6 item 9) rotates.
5.4.2 Rotate the Torch Holder Eccentric (9) until the hole for the torch in the Torch Holder Eccentric (9) is at its
furthermost point from the band surface.
5.4.3 Install the machine torch through the bore of the Torch Holder Eccentric (Figure 6 item 9).
Note: This installation requires an Angle Head Adaptor for the Torch Tip (See Section 2 - Accessories).
Warning: A Machine Torch having a barrel length less than 10” / 254mm should never be used with the Band
Crawler. If the Cutting Tip is too close to the Drive Wheel Assemblies (Figure 6 item 14), it will cause the grease to
seep from the needle bearings of the Drive Wheel Assemblies causing the needle bearings to seize and may shear
the Worm Gear Shaft Assembly (Figure 6 item 11).
5.4.4 Adjust Torch Tip to desired bevel angle.
5.4.5 Adjust torch horizontally in Eccentric Torch Holder (Figure 6 item 9) for proper Tip alignment with cut line.
5.4.6 Rotate Eccentric in Band Crawler (Figure 6 item 5) to set Tip to the pipe distance per the torch manufacturer’s
instructions.
5.4.7 Turn the Set Screw (Figure 6 item 7) to lock Torch and Eccentric Torch Holder (Figure 6 item 9) in position in the
Band Crawler Body (Figure 6 item 5).
Note: A Rack Adjustable Torch Arm (Mathey Part No. 05-0116-032) is available to hold the Fuel or Plasma Machine
Torch eliminating the need for the Torch Angle Head Adaptor.
Special Note: If the Torch Carrier Crawler is going to be used to create a back bevel, the distance between the
Torch Tip and Drive Wheel Assemblies (Figure 6 item 14) should be as far as possible to minimize the heating of the
Bearings of the Drive Wheel Assemblies (14).
5.5 - The Manual Band Crawler Cutting Process
5.5.1 Light the Torch per the torch manufacturer’s instructions.
5.5.2 Preheat the pipe per the torch manufacturer’s instructions.
5.5.3 Move the cutting oxygen valve of the torch to the cutting position per the torch manufacturer’s instructions.
5.5.4 Rotate the hand crank of the 9 or 14 foot Flexible Drive Shaft assembly (Figure 6 item 19A or 19B) in the desired
direction to move the Band Crawler around the pipe.
5.6 - Turning off the Torch and dismounting the Manual Band Crawler
5.6.1 Once the cut is complete move the cutting oxygen valve of the torch to the off position per the torch
manufacturer’s instructions.
5.6.2 Close the Oxygen and fuel gas valves on the torch per the torch manufacturer’s instructions.
5.6.3 Lift the Latch Handles (Figure 6 item 21B) on the Rear and Front Ball Leg Assemblies (Figure 6 items 8 & 10) to
release the Band Crawler from the band.
5.6.4 Lift up on the Band Latch Handle (Figure 2 item A)
5.6.5 Remove end of the Latch Handle Assembly (Figure 2 Item 5) from the Latch Anchor (Figure 2 Item 3).
5.6.6 Pull the Band Handles (Figure 2 Item 6) outward spreading the ends of the Band apart and remove it from the pipe.
5.6.7 Pull the Band Handles (Figure 2 Item 6) together and insert band end with the tangs into the Duckbill (Figure 2
Item 4).
5.6.8 Insert end of the Latch Handle Assembly (Figure 2 Item 5) into the Latch Anchor (Figure 2 Item 3).
5.6.9 Close the Latch Handle Assembly (Figure 2 Item 5) by pushing the Latch Handle Figure 2 Item A) of the Latch
Handle Assembly downward.
5.7 - The Motorized Band Crawler Cutting Process
5.7.1 Depress the Emergency Stop Switch.
5.7.2 Connect the Electrical Connector (Figure 7 item 33) to the Motor Control Box (Figure 7 item 35).
5.7.3 Connect the Motor Control Box (Figure 7 item 35) from the 230vac electrical power source
Caution: Keep your finger clear of the area where the band end with the tangs
will be inserted into the Duckbill.