Section 4,
Maintenance
The Ultima Controller and Ultima Calibrator are rated as
intrinsically safe for Class I, Division 1, Groups A, B, C and D
areas during normal operation. All maintenance procedures
must be performed in a non-hazardous area. Failure to
comply with this warning can result in serious personal
injury or death.
Batteries
• The Ultima Controller is approved for use with two Duracell
MN1500 "AA" Alkaline cells.
• The Ultima Calibrator is approved for use with either two Duracell
MN2400 or two Eveready E92 "AAA" Alkaline cells.
Determining a Low Battery Condition
on the Ultima Controller
To Determine if Battery Replacement is Necessary
1. Turn the controller unit ON.
• After the unit completes its initialization,
the display shows ID CODE, READY or ready.
2. If the display shows the ID CODE message, enter the correct code
(see "Using the ID CODE Feature") to reach the ready prompt.
3. The READY display is the low battery indicator:
• If READY appears (upper case letters), the batteries are OK
• If ready appears (lower case letters), the batteries are weak
and must be replaced.
Replacing the Batteries
To Install New Batteries in the Ultima Controller
1. Turn OFF the Ultima Controller.
2. Remove the four screws from the rear of the case and carefully
pull the rear cover away from the unit.
3. Remove the two weak batteries from the battery holder and
dispose of properly.
"
WARNING
4-1
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