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Peart 150 Branch
1. Machine to be operated by trained personnel.
2. Instructions to be read before use.
Tel: 01623 422982
Fax: 01623 661022
Tel: 0161 7641721
Fax: 0161 7620577
Unit 2, Riverwalk
Tel: 0208 805 8010
Fax: 0208 805 6010
18 Napier Square
TEL: 01506 440233
Fax: 01506 440266
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Hyram recommend that a pressure test is completed prior to making
new connections. The following test pumps are available for hire and
This manual forms a part of the product to which it relates. It should be kept for the life of the
product. Any amendments issued by Hy-Ram Engineering Co Ltd should be incorporated in the
text. The manual should be passed to any subsequent holder or user of this product.
The Peart 150 Drilling Machine should only be used by trained and competent operators.
As an operator, always ensure that you fully understand how the equipment functions and that
you are fully aware of the dangers. Always wear the necessary protective clothing including
adequate eye protection, hard hat, gloves, overalls, protective boots etc.
Prior to commencing work, always ensure that the drill kit is complete and fully serviceable.
If in doubt replace.
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Nominal branch drill and tap size 50mm (2”) to 150mm (6”) as standard.
Can be upgraded to drill 200mm (8”)
Maximum working pressure 16 bar.
Maximum working temperature 200 c.
Boring bar travel 500mm.
Hydraulic or pneumatic motor suitable for connection to site services.
Hand: by ratchet wrench supplied.
Boring bar rotational speed free from load: 28rev/min with air or hydraulic motor.
Boring bar automatic feed 0.15mm/rev for cutting. 2.31mm/rev for tapping (11 TP1).
The Peart 150 underpressure drilling machine is designed to work on gas, water, oil or
chemical pipelines up to the specified pressure and temperature limits.
The machine is supplied in a wooden box complete with boring bar extension ratchet,
wrench, spanner, hexagon wrench (allen key), machine adaptor gaskets and spare seal
kits. Cutters, adaptors, motor kits etc, if required are supplied in separate boxes.
Basic machine 78kgs.
Do’s and Don’ts
Before attaching machine to valve fitting:
• Ensure that pressure and temperature of fluid in pipeline is within machine specification.
• Ensure that cutters and pilot drills are sharp and in good condition.
• Ensure that the valve gate is fully open.
• Ensure that cutter will pass through valve.
• Ensure that cutter and pilot drill are securely fastened to the boring bar.
• Ensure that cutter can be fully retracted into flange adaptor.
• Prior to installation of the drilling machine the operator shall check the traverse of the
boring bar and the indicator scale.
• Note the position of the boring bar and record from the indicator scale.
• Using the handle provided activate the hand feed mechanism to traverse the boring bar
through a distance between 300mm and 500mm.
• Measure the physical distance travelled by the boring bar.
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• Record the indicator scale reading with the boring bar extended.
• Check that the physical traverse of the boring bar and the displacement from the change
in indicator readings correspond.
• Any difference in between the indicator scale reading and the distance travelled is an
indication that the indicator gearing mechanism is slipping and the indicator scale is
providing inaccurate information.
• Drilling MUST NOT be undertaken until the indicator scale is proven to provide accurate
• The machine MUST Not be allowed to travel beyond the limited 500mm traverse.
• Fit blunt or damaged cutters.
• Attempt to drill into pipelines containing fluids at higher pressure or temperature than the
machine design allows ( see specification). Fluid must not be capable of corroding machine
With machine attached to valve flange
• Check that screws on flange are tight. Use the correct number of screws.
• Check that the valve can be closed with the cutter fully retracted.
• Ensure that drilling machine is supported by suitable packers at gearcase end.
• Ensure that the area around the machine is clear and allows easy access to the machine
• Ensure that machine can successfully complete the intended cut without reaching the end
of the boring bar travel.
• Ensure valve is fully open before starting to drill.
• Allow machine to “hang” on valve flange when drilling horizontally.
• Damage pilot drill point by feeding towards pipe to fast.
• Remove feed handle during automatic feed.
• Leave the machine unattended whilst drilling.
• Allow machine to continue to feed past end mark on indicator.
• Feed by hand so fast that the machine stalls.
• Put machine into reverse unless removing tap.
• Reverse a cutter will damage the teeth.
Stop drilling operation once pilot drill has broken through the main. Interrupt drilling
operating between pilot drill breaking through and cup drill commencing its cut this could
provide an overload condition on the cup drill causing severe damage.
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• Ensure that boring bar is fully retracted before attempting to close valve.
• Ensure that pressure in adaptor is release before loosening flange screws.
• Attempt or close valve with boring bar extended.
After removal from Valve
• Clean machine and all separate parts and replace in boxes.
• Clean, lightly oil and retract machine boring bar.
• Leave automatic feed lever off.
• Check cutters for damage and obtain replacements if necessary.
Check that all parts are to hand and in good condition. Cutters and pilot drills should be
inspected for chipped or broken cutting edges. Replace any damaged cutters or drills. The
detent on the pilot drill should be free to move and shown on signs of damage: faulty
detent will result in the coupon being lost during drilling.
Assembling machine, motor and cutters
Assemble correct machine adaptor to the front flange of drilling machine using correct
gasket. A plug or valve should be fitted into the tapped hole on the side of the adaptor
Advance boring bar by rotating feed handle anti-clockwise so that it protrudes beyond the
Check that cutter will pass through the open branch valve.
Fit cutter and pilot drill to boring bar using the correct cap screw and ensure that the
screw is tight.
Withdraw cutter into adaptor.
Using the correct number and type of flange screws, fit the machine to the valve.
We strongly recommend that the branch connection and valve are checked at this stage to
• The valve opens and closes satisfactorily.
• The connection is pressure tight.
Check the valve is open, fit motor to machine drive spindle.
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IMPORTANT SAFETY NOTICE:
Hydraulic and pneumatic motors should be fitted with the correct adaptor sleeves and
torque tubes (see drawing). Failure to do so will cause damage to the machine and injury
to the operator.
Disengage automatic feed and wind cutter forward until it touches pipe wall. Note position
of indicator on scale to determine break through point. Mark this point on the scale.
Start machine and start automatic feed.
Machine will be heard to cut. The machine should never be allowed to drill unattended and
a close watch should be kept on its progress. In case of trouble, stop the machine and
refer to fault finding chart.
After machine has reached break through point and cutting has ceased stop automatic
Withdraw cutter into adaptor flange with the crank handle: do not attempt to exceed
travel of indicator.
Bleed excess pressure from adaptor flange by removing plug on side of adaptor
Remove machine (reverse of assembly).
The Peart 150 underpressure drilling machine is capable of tapping steel, cast grey and
ductile iron with threads of 11 threads per inch.
Note: Always ensure that there is end float on the tap. The tap should be capable of being
moved along the adaptor approximately 0.5mm with the pilot drill tightened into its
socket. If there is no end float, see the fault chart.
The procedure is similar to drilling (including checking that the tap will pass through the
valve) until the machine is wound forward so that the point of the pilot drill touches the
With the pilot drill touching the pipe wall, fit the tapping indicator (UP3641) to the
machine scale with the set notch in line with the red indicator.
Start machine until the indicator is adjacent to the start tap notch.