Tweco Quick Robotic Torch - Manual (Page 15)

5-11
Quick Robotic toRch
SM-QRTORCH WATER-COOLED TORCH BODY AND CABLE ASSEMBLY
SECTION 5:
WATER-COOLED TORCH BODY AND CABLE ASSEMBLY
The water-cooled torch and cable 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 5-1 & 5-2 showing the water shut-off valves on the QRW and QRWA Series Torch Body and Cable Assembly.
HOSE NIPPLE
SPRING
VALVE
Figure 5-1: QRW Series Check Valves
VALVE
SPRING
HOSE NIPPLE
Figure 5-2: QRWA Series Check Valves
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 to avoid any damage to the torch
and cable assembly.
CAUTION
Operating a water-cooled torch and cable
assembly without water or restricted flow will
result in damage to the cable assembly.
If the threaded power connection is removed from the QRW series block assembly make sure the component parts making up the
check valve remains inside of the block assembly. If the components are removed, make sure they are installed properly.