Extech Instruments PRC70, User Manual

Page: 27 / 33

Page 27 PRC70-EN-V2.1 12/11
11 Calibration
Please contact Extech Instruments Corporation for instructions on returning the unit for calibration.
12 Replacing the Batteries or Fuses:
Warning
To avoid possible electric shock, remove the test leads from the calibrator before open the battery door and ensure that the
battery door is tightly closed before switching the calibrator ON.
Caution
z To avoid battery leakage and possible explosion ensure correct battery polarity.
z Do not short circuit the battery.
z Do not disassemble, heat, or expose batteries to fire.
z
When replacing the batteries, use only the specified type.
z Remove the batteries if the meter is to be stored for a long period.
Step 1:
Remove the test leads and charger before replacing the batteries or fuses, and switch OFF the meter.
Figure 16 - Replacing batteries and fuses
Step 2:
Remove the protector as shown in Figure 16. With a standard blade screwdriver, turn each battery door screw a
quarter turn counter-clockwise to remove the battery door.
Step 3:
Replace with four (4) new AAA alkaline batteries using the instructions shown on the battery door. Replace the
blown fuses with same type F1 (50mA/250V) or F2 (63mA/250V).
Step 4:
Reinstall and tighten the battery door, affix the protector before using the meter.