13
Start-Up
Inserting the Batteries
With four AA batteries, the Portavo has an
operating time of over 1000 h.
Open the battery compartment on the
rear of the device. Be sure to observe the
correct polarity when inserting the batter-
ies (see markings in the battery chamber).
Close the battery compartment cover and
screw it handtight.
Check the shipment for transport damage and completeness
(see Package Contents).
Caution!
Do not operate the device when one of the following conditions applies:
• the device shows visible damage
• the device fails to perform the intended function
• prolonged storage at temperatures above 70 °C
• severe transport stresses
In this case, a professional routine test must be performed.
This test should be carried out by the manufacturer.
A special lithium-ion battery suited to the battery compartment is available for the
Portavo 904. The battery is recharged through the USB port.
Note: Not available for the Portavo 904 X (device variant for applications in hazard-
ous locations).
Precautions for application in hazardous locations
Warning!
• Only open the battery compartment of the Portavo 904 X outside the
hazardous location.
• Never try to open the device. If a repair should be required, return the
device to our factory.
• Never use the USB port within the hazardous location.