5990A
19
Maintenance
Electric shock hazard:
• Do not attempt to repair this unit. It contains no user-serviceable parts.
• Do not expose the unit to extremes in temperature or high humidity. See Specifications.
Failure to observe these precautions may result in injury and can damage the unit.
Electric shock hazard:
Before opening the case, remove the test leads from the circuit and shut off the unit.
Inspection
To maintain the operator’s safety and to ensure the reliability of the instrument it is advisable to
inspect the instrument on a regular basis. Check that the instrument and its accessories are not
damaged. If any defect is found please consult the Greenlee Service Center at 800-435-0786.
Insertion and Charging Batteries for the First Time
Battery cells are stored in the bottom section of the instrument casing under the battery cover
(see Fig. 15)
. When inserting batteries for the first time please note the following:
• Disconnect any measurement accessories or mains supply cable connected to the instrument
before opening the battery cover to avoid electric shock.
• Remove the battery cover.
• Insert batteries correctly
(see Fig. 15)
, otherwise the test instrument will not operate!
• Replace the battery cover and fixed the cover back in place.
Connect the instrument to the mains power supply for 14 hours to fully charge batteries.
(Typical charging current is 300 mA).
When you charge the batteries for the first time, it normally takes about 3 charge and discharge
cycles for the batteries to regain their full capacity.
Replacement and Charging of Batteries
The instrument is designed to be powered by rechargeable batteries supported by mains
supply. The LCD contains an indication of battery condition (upper left section of LCD). When the
low-battery indication appears
(Err),
the batteries have to be recharged. Connect the instrument
to the mains power supply for 14 hours to recharge cells. Typical charging current is 300 mA.
Note:
• Operator does not need to disconnect the instrument from mains supply after the full
recharging period. The instrument can be connected permanently.
Fully charged rechargeable batteries can supply the instrument for approx. 4 hours.
(Continues testing at 5kV)
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