5.2
Every 3 Months
Visually inspect the ABT 4550 series gauges for signs of damage. If necessary, contact your
local distributor for help.
5.3
Annual
The ABT 4550 series gauges must be returned annually for re-calibration to ensure
measurements are within specification.
The condition of all components will be checked at this time and replaced as required.
5.4
Replacing the PP3 Batteries
To replace the PP3 batteries, carefully remove the battery compartment from the front of the
gauge as shown in Figure 7. Visually inspect the gasket for signs of wear/damage and replace
if necessary, contact your local distributor for help.
Figure 3 - Battery Replacement
