10.2Installation of the External Battery
CAUTION 
◇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
◇After disconnecting the internal battery connector (CON12), connect the external battery connector (CON9).
Having both connected simultaneously may result in damage to the STP control unit.
◇DO NOT use new batteries and
◇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 9.5.1, "How to Replace the Battery Case," Steps 3) and 4).
Secure the internal battery connector (CON12) 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 9 PIN No. Polarity of Battery
1 | + |
2 | - |
6)Connect the external battery plug to the external battery connector (EXT. BATTERY CON9) 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).
