Digital inputs, Tou – battery replacement, Warning – SATEC PM135 Manual User Manual
Page 34
Chapter 2 Installation
I/O Connections
34
PM135 Powermeter Series
Digital Inputs
Figure 2-25: TOU Digital Input Connection
TOU – Battery Replacement
WARNING!
Only qualified personnel familiar with the instrument and its
associated electrical equipment must perform the RTC battery
backup replacement.
To replace the CR1632 RTC battery:
1. Remove the TOU module from the
PM135 compartment
2. Open the TOU MODULE case by
applying a flat screwdriver at three
snap-in slit (1, 2 and 3), as shown
in Figure 2-26.
3. Remove the old battery by lifting up
the battery holder retractable tab.
4. Place the new CR1632 battery into
the battery holder while holding up
the battery holder retractable tab in
such a way that the (+) battery pole
is toward the battery holder, as
shown in Figure 2-26.