User Manual

10 Utility AirSpade Technical Applications Bulletin
PROTECTION FROM HIGH VOLTAGES
When excavating in the vicinity of underground utilities, the potential
exists to uncover and expose high-voltage electrical lines.
Consequently, to protect workers at the job site, the Utility AirSpade
features an insulated fiberglass barrel assembly – incorporating a
high-dielectric fiberglass outer barrel and an insulated inner air hose.
Together, these components provide an electrical insulation rating of
75 kV per foot.
Utility AirSpade
Barrel Construction
Inner Hose
(Insulated Thermoplastic)
l
Outer Sleeve
(Pultruded Fiberglass-Reinforced Polyester)
l
Threaded Barrel Coupler
(Non-Sparking Brass)
l
UTILITY AIRSPADE DEVELOPMENT
To meet these requirements, Guardair Corporation developed the
Utility AirSpade incorporating the following features essential for the
safe excavation of underground utilities:
•
Heavy-duty, cast aluminum handle with full-size grip opening
•
Retractable stabilizer bar for two-handed operator control
•
Dead-man trigger with trigger guard prevents accidental activation
•
Integral air pressure gauge ensures optimal operating performance
•
Electrically insulated, 4’ fiberglass barrel rated to 75 kV per foot
•
Non-sparking bronze barrel sleeves and threaded connectors
•
Adjustable, dirt shield protects the operator from dislodged soil
•
Non-sparking bronze Supersonic Nozzle
•
¾” FNPT air inlet