
STP-200/300/400 Series Instruction Manual
10.2 Installation of the External Battery
◇ Turn OFF the primary power (Switch the breaker "OFF"), before
connecting the battery.
Failure to do so may result in product damage or a problem due to
electric shock or short-circuiting of the internal circuit.
◇ After disconnecting the internal battery connector (CON85), connect
the external battery connector (CON90).
Having both connected simultaneously may result in damage to the
STP control unit.
◇ DO NOT use new batteries and worn-out batteries simultaneously.
◇ DO NOT use different types of batteries simultaneously.
◇ If the battery is not securely connected, backup during a power
failure does not function.
Install the external battery in accordance with the following steps:
1) Stop the STP pump, and turn OFF the primary power (Switch the breaker
"OFF").
2) Unscrew the 4 screws attached to the front panel and bring it down towards
you.
3) Pull out the battery according to the method described in Section 9.4.1, "How
to Replace the Battery Case," Steps 3) and 4).
Secure the internal battery connector (CON85) so as not to interfere with
other parts inside the STP control unit.
4) Close the front panel of the STP control unit and tighten the 4 screws that
secure the front panel.
5) Connect the external battery to the attached external battery plug, paying
attention so that "+" and "-" are positioned correctly. "+" and "-" of the
external battery plug are represented by (1) and (2), respectively.
CON 90 PIN No. Polarity of Battery
1 +
2
-
6) Connect the external battery plug to the external battery connector (EXT.
BATTERY CON90) on the rear panel.
7) Record the next replacement date of the battery in the "Battery Instruction
Label" (See Figure 9.3) on the front panel for the Next Replacement Date of
Battery (See the technical data prepared by the battery manufacturer).
10-3
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