ABB ScreenMaster SM1000 Replacing Instructions

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A B B M E A S U R E M E N T & A N A LY T I C S | I N F O R M AT I O N | I N F 0 5/9 0 R E V. E
ScreenMaster SM1000, SM2000 and SM3000
Paperless recorders
Replacing the battery
1 Introduction
This publication details the replacement of the battery (B11845)
fitted to the main board of ScreenMaster SM1000, SM2000 and
SM3000 paperless recorders. The procedure must be carried
out by a trained technician.
The battery is non-rechargeable and its only function is to
supply power to the recorder's real-time clock when the
recorder is isolated from the power supply. It can supply power
to the clock for a minimum of 1.5 years before replacement is
required.
2 SM1000 and SM2000
Removing the main board
CAUTION
The recorder is vulnerable to electrostatic damage. Wear an
anti-static strap or dismantle the recorder on an anti-static
workbench.
Remove the main board as follows:
1 Isolate the recorder from its power supply.
2 Remove the recorder from its case – see Figure 1.
Note. Refitting is the reverse of removal.
Withdraw the recorder
3
from its case
1
Remove tamper-evident seal (if fitted).
Caution. Do not break the tamper-evident
seal unless authorized to do so.
Figure 1 Removing the recorder from its case
Terminal cover
(if fitted)
Unscrew the
2
jacking screw