21
PRECAUTIONS: BLASTING HOSE
CONNECTION AND DISCONNECTION
Never disconnect the blasting hose from the machine or blasting gun when
the main power supply and/or compressed air supply are connected. Otherwise
activation of the trigger on the blasting gun will result in a discharge of blasting air
through an open outlet instead of through the blasting gun nozzle. If this happens,
the operator will lose control of the air stream, and serious injury that could result
in death.
CORRECT ORDER FOR CONNECTION:
FIRST connect the blasting hose couplings,
THEN the signal cable.
CORRECT ORDER FOR DISCONNECTION:
FIRST disconnect the signal cable,
THEN the blasting hose couplings.
DEFECTIVE BLASTING HOSE
The outer hose sleeve protects the operator from any exposure caused by wear
and tear of the inner hose. No pressure build-up is permissible in the outer sleeve
during operation. If a defective blasting hose is used, the operator risks serious
injury from being hit by dry ice pellets. Any sign of ination means that the inner
hose is in some way defective.
NOTE: If that fault occurs, stop the machine IMMEDIATELY:
• Close the compressed air supply immediately.
• Activate the trigger on the blasting gun until the system is depressurized or use
the air release valve.
• Activate the emergency stop button.
• Disconnect the main power supply.
• Disconnect the compressed air supply.
• Disconnect the blasting hose (FIRST disconnect the signal cable, THEN the
blasting hose couplings).
• Make sure the blasting hose is repaired and pressure-tested (next page).
• Although the hopper may not be empty, the system must not be blasted
through until a new/repaired blasting hose has been connected.
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