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Press the down arrow to increase the resolution of the frequency axis from 100 (10 Hz or 600 RPM resolution)
to 800 lines (1.25 Hz or 75 RPM resolution). Increasing the resolution zooms into the frequency spectrum.
Scroll using the arrows to display the full spectrum at the higher resolution.
2.2.4 Live update mode
The MAC800 can continuously display readings taken at one second intervals. Select live update from the
Configuration menu, by holding down the POWER button for two seconds.
It is possible to use live update with the basic readings screen, the VA bands screen or 100 line frequency
spectrum. Press the POWER button at any time during live update to capture a full (800 line) resolution
reading.
2.3 Configuration menus
The Configuration menu can be accessed by pressing and holding down the POWER
button for two seconds.
Navigate the menu with the left and right buttons. Press the POWER button to select the
highlighted menu item.
2.3.1 Setup Wizard
Setup Wizard allows the machine running speed to be entered and the ISO alarm levels
to be set automatically according to the size and type of machine to be monitored.
The first screen shows the currently selected running speed in the pre-selected units (Hz
or RPM). Change the running speed with the up and down arrow buttons.
Press the POWER button again to select machine type (motor or pump). If motor is
selected the size must be selected (under or over 300 kW). If pump is selected, specify
whether it has an integrated or external drive unit.
Selecting the machine type and size allows the ISO alarm levels to be set accordingly, as
does specifying the type of mounting (rigid or flexible).
Unless a machine is bolted to a concrete floor, its mounting should be considered flexible.
Most motors and pumps are mounted on some kind of frame or structure and should be
considered flexibly mounted.
2.3.2 Manual setup
BDU alarm settings
Sets the alarm levels at which the BDU readings change color to be altered.
BDU threshold values
Warning - readings are amber, 50 BDU
Critical - readings are red, 100 BDU
Both threshold values can be set independently using up and down arrows. The levels are
typical for medium sized machine bearings operating at run speeds from 1000 to 3000
RPM. Larger bearings or higher run speeds may need increased BDU threshold values to
identify worn or bad bearings.