Owner`s manual

OM-263 001 Page 33
6-10. Prestart Checklist (Before Welding)
! Do not use the fume extraction
equipment unless you are sure it is
correctly assembled and working
properly.
! Do not look into the fan outlet to
check fan rotation. View fan rotation
through the top fo the inlet cone.
(Fan should rotate counterclock-
wise.) Make sure the exhaust plen-
um is free of tools or debris before
checking fan rotation.
! Keep away from exhaust outlet.
Verify all ductwork and tubing is tight, se-
cure, and does not leak.
Verify clean air outlet is not obstructed and
discharge air appears clean (free of welding
fumes). Check filter if discharge air appears
dirty. Make sure panels are closed (and
latched) to ensure a tight seal around the fil-
ter.
Verify electrical connections are tight.
Motor and fan should be wired for counter-
clockwise rotation when viewed from the in-
let cone. Access this view by ”bumping” the
motor (quick start, then stop the motor),
then open the control panel access door
from view from above through the inlet
cone.
 To reverse fan rotation (three-phase
power supply) disconnect input power
and switch any two leads on the motor
junction box. Do not interchange a
power lead with the ground wire.
Verify the particle collection bin is properly
sealed and clamped.
Set the exhaust damper to the fully−closed
position.
Remove all loose items in or near the inlet
and outlet of the unit. Confirm that all re-
mote−mounted controls and solenoid en-
closures (if applicable) are properly wired
and all service switches are in the Off posi-
tion.
Verify all optional accessories are installed
properly and secured.
Turn on compressed air supply. Adjust air
pressure to 90 psi (621 kPa)
Start unit and adjust damper control.
The exhaust damper can be adjusted to
regulate or limit airflow when unit is in oper-
ation. Before start-up, set the exhaust
damper to the fully-closed position. Adjust-
ments to airflow can be made by loosening
the wing nut and sliding the handle to open
or close the damper. When replacing filters,
reset the damper to the fully-closed position
and then open the damper to reestablish
desired airflow.
NOTICE − Excess airflow can shorten filter
life and cause electrical system and blower
motor failure.
Notes
Work like a Pro!
Pros weld and cut
safely. Read the
safety rules at
the beginning
of this manual.