Martin Magnum 2500Hz, User Manual

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14 Control settings
Priming th e machine after fluid o ut
If the machine runs out of fluid it may not pump properly after refilling the fluid
due to airlocks in the fluid pipes.
To prime the machine, hold down the FOG button and turn the knob to
maximum. Keep the button held until the haze output is strong and steady. Then
turn the knob back to the required output level and release the FOG button.
During PRIME mode the machine will prime for 10seconds if any
airlock is still visible on the fluid line, prime machine again until the
haze output is continuous. Note that you must turn the knob to start
the prime process.
If the machine is left to run when out of fluid, damage may be caused to the
pump leading to premature pump failure. The automatic fluid sensing system
will shut the machine down within approximately 5 minutes of running dry.