BTG Visual-ICE, Руководство пользователя

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Visual-ICE™ Cryoablation System
7-7
Symptom Potential Causes / Solutions
No helium gas is delivered to the needle 1. The helium gas cylinder valve may be closed.
Open the gas cylinder valve by turning the valve
counter-clockwise to allow sufficient gas flow. Verify
that appropriate pressure is displayed on the Gas
Indicator.
2. The needle may be clogged.
•
Press the Stop button to stop all activity on the
channel.
• Hold the needle connector firmly with one hand
and unlock the channel to disconnect the needle.
• Move the needle to a different channel and run
the test again.
NOTE: If only one needle is connected to the system,
there may be some residual pressure behind the
needle connector.
3. If the problem persists, replace the needle with a new
needle.
The Manual Vent Valve is leaking gas The Manual Vent Valve may be open. Fully close the
Manual Vent Valve.
There is a hissing sound before the
needles are connected
1. Check that the regulated pressures are within the
working pressure limits (green range on the Gas
Indicator display). The system may be venting to
reduce the pressure to below 4200 psi to prevent
damage to the system. If the pressure drops to within
working pressure range, the system will operate
normally.
2. The Automatic Vent Valve may be stuck open. If the
manual vent valve is fully closed and the hissing
persists, shut down the system and contact Galil
Medical Customer Service.
The pressure displayed on the Gas
Indicator indicates the gas pressure is
too low (Table 4-2)
1. Verify the Argon Shutoff Valve is open.
2. Verify that the gas cylinder valve is sufficiently opened
to allow gas flow. If necessary, open the valve
approximately another half turn.
3. Verify that the cylinder contains sufficient pressure
using the gauge on the cylinder.
4. Replace the cylinder, if needed.