Maintenance
Battery Replacement
The 635/645/655 will display a iBATi symb 01 when the internal 9V battery
needs replacement. Replace battery as follows:
1. Ensure instrument is switched off
2. Loosen the cross head screw on the battery compartment cover
3. Remove battery compartment cover
4. Remove old battery
5. Replace with new battery 9V NEDA 1604 or equivalent
6. Reassemble the instrument in reverse order from above
7. RE-fit the cross head screw being sure not to over tighten
Cleaning
Use a mild detergent and a slightly damp cloth to clean the surfaces of the
instrument.
page 9
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