Tweco QFW600 - Manual (Page 11)

quick fixed automation direct plug torches
3-7 SM-QFDP inStAllAtion AnD oPeRAtion
14. If the torch being installed is a water-cooled QFW
series, refer to Section 4 for further instructions on
water supply requirements.
15. Trim the conduit extending from the front of the
conductor tube assembly by following the steps
below:
Method “A” – using a tape measure or scale, mark
and cut the conduit to the cut length noted in the
table below. Refer to Figure 5 — Method “A”.
Method “b” – the diffusers have a machined
groove around the outer diameter. Position the
diffuser as shown in Figure 5 — Method “b” and
mark and cut the conduit.
Conductor Tube Assembly Cut Length “A”
QtR66 Series (For use with QFA)
1-5/16”
(33,32mm)
QtRW63 Series (For use with QFA) 15/16”
(23,80mm)
QtRW64 Series (For use with QFA) 1/4” (6,35mm)
QtRW66 Series (For use with QFA) 5/16”
(7,92mm)
A
Figure 5: Conduit Cut Length
METHOD “A” METHOD “B”
CUT LINE
16. After trimming to length, radius and remove any
obstructions from the end of the conduit.
17. Re-install the diffuser, tip and nozzle into the conductor
tube assembly.
18. install the rear connector plug into the feeder.
19. the torch assembly is furnished with a purge hose
than can be used to supply inert gas and or anti-spatter
through the torch block and conductor tube assembly.
to use this purge hose, remove the plastic plug and
connect accordingly.
20. the torch is now ready to place into operation.
3.02 Disassembly
1. to disassemble the torch assembly, reverse the steps
noted in Section 3.
3.03 Water-Cooled Torch Assembly
The water-cooled torch assemblies incorporate water
shut-off valves allowing the conductor tube to be removed
without shutting off the water supply. This reduces the
chance of introducing moisture into the conductor tube
and conduit. Refer to Figure 6 showing the water shut-off
valves on the QFW series torch assembly.
VALVE
SPRING
WATER
PLUG
Figure 6: QFW 600 Check Valves
1. A water supply providing not less than 3/4 gallons/
minute (2.84 liters/minute) water flow must be
used during operation. The water supply should be
installed to run when the power source is turned “on”
if possible.
2. Connect the water hose labeled “Water-In” on the torch
assembly to the “Water-Out” of the water supply.
3. Connect the water hose labeled “Water-Out” on
the torch assembly to the “Water-In” of the water
supply.