Air Intake Filter Cleaning And Replacement - Bartington PA1 Operation Manual

Z axis alignment trim in Y axis
Feed a signal from the signal generator into the Z axis. Monitor the Y axis output of the
calibration magnetometer. Initially adjust the trim control until a minimum is obtained. Then
rotate the test magnetometer through 180° about the Y axis. If a signal is found then adjust the
trim control until the same level is observed when the magnetometer is in the normal position
and rotated position.

6. Air Intake Filter Cleaning and Replacement

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The air filter consists a 440x85mm (approx.) foam pad [32] fitted behind the centre front panel of
the PA1 Power Amplifier. It should be cleaned or replaced when necessary.
WARNING: Disconnect mains supply before removing filter panel. The earth bonding
connector can then be disconnected if required. Fan filter maintenance must be performed
by suitably trained personnel only.
Remove the power connector from the lower rear panel before removing the centre front panel.
The centre front panel can be removed by loosening the four large screws in the corners [33].
The filter may be cleaned by brushing off any dust from the front and blowing through from the
inside surface.
Caution: Air should be blown with a low pressure air line. Use appropriate personal
protective equipment (PPE).
Should the filter need replacing, the old filter can be removed by taking out the six screws [34]
holding the filter retaining bracket. Replace the filters with appropriate flame retardant filter
material (contact Bartington Defence & Space for details). Replace the filter retention bracket
and screws.
When filter maintenance is complete, replace the earth bonding wire connector (if disconnected),
before replacing the centre front panel.
BARTINGTON DEFENCE & SPACE
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