REED DM3MECH Manual Del Operador página 2

Mechanical Hot Tapping Machine
CAUTION:
When used on a pressurized system an outward force on the shaft
will occur as the drill bit passes through wall of the pipe. Forces
can be as high as 45 lbs on a system pressurized at 300 psi. At
any time after the drill bit passes through wall of the pipe a reactive
force must be applied to the end of the shaft until the shaft is in the
fully retracted position, failure to do so my cause damage to the
tool or personal injury.
Applying too much force while cutting the coupon can result in
a sudden breakthrough of the hole saw. A sudden break through
may result in the coupon retaining drill bit striking the back side of
the main and damaging the drill bit. One can prevent this by cutting
a spacer of 3/4" copper tube long enough to stop the drill bit from
hitting the back of the main. Slip this spacer over the exposed
shaft between the gland nut and the drill chuck.
Note: Use standard depth holes only.
Store shafts separate from hole saws. Allowing the hole saw teeth
to contact the shaft during transportation and storage can damage
the shaft. A damaged shaft can damage the Main Body and cause
the shaft to seize during use.
Description:
REED DM3MECH and DM3MECHBSPT make branch connections
from 3/4" to 4" valve size on any appropriately sized mainline for
most piping materials up to 300 psi. Not recommended for use
on plastic pipe. The machine eliminates the need to shutdown,
drain, cut, refit and refill piping systems.
See www.reedmfgco.com for items included with the purchase of
REED #08350, #08351, #08354 and #08355.
Specifications:
Valve Size: 3/4" to 4"
Pipe Materials: Mild Steel, Galvanized Steel, Stainless Steel,
Copper, Brass, and Aluminum pipe
Maximum Pressure:
Chilled water and hot water systems: 300 psi
Steam: 15 psi
Maximum Operating Water Temperature
250 degrees F
Do not use any DM3MECH models on ammonia or any other
caustic systems.
Accessories (Required but not supplied)
1. Correctly sized saddle (or threadolet).
2. Branch size shoulder nipple.
3. Branch sized full bore gate valve (or full bore ball valve).
4. Branch sized nipple long enough for drill bit to clear valve
when fully retracted.
5. Branch size 1 1/4" NPT "T" or 1 1/4" BSPT "T" and appropriate
reducer bushings. (Labeled as Bleed-Off "T", Figure 1.)
6. Valve or hose bib, and appropriate pipe nipple and reducer
bushings. (Labeled as Bleed-off Valve, Figure 1.)
7. 3/8" or 1/2" Drill Motor.
2
Boring
Assembly
Branch
Valve
Main Line
8. Hose (if flushing chips or filings away).
Additional Accessories for 3" and 4" Flanged Valves.
A. Fabricated pipe saddle and flange (4 1/2" throat of
saddle to face of flange).
B. Branch size threaded flange.
C. Branch size by 1 1/4" bushing.
D. 1 1/4" by close nipple.
E. 1 1/4" by 1 1/4" by 1 1/4" "T".
F. 1 1/4" to 1/2" bushing.
Operator's Manual
Shaft
Gland Nut
Sealing Unit
1-1/4 NPT Male Threads
(DM3MECH)
1-1/4 BSPT Male Threads
(DM3MECHBSPT)
Bleed-Off "T"
Bleed-Off Valve
Branch Size Nipple
Shoulder Nipple
Saddle