12 Maintenance and Inspection
CAUTION 
◇ Stop the STP pump, turn OFF the primary power (switch the breaker "OFF") and disconnect the internal battery connector before performing maintenance of the STP control unit (battery replacement/fuse replacement).
Failure to do so may result in an accident such as electric shock.
◇Stop the STP pump, and turn OFF the primary power (Switch the breaker "OFF") before performing inspections of the STP pump (for deposit).
Failure to do so may result in the inadvertent rotation of the STP pump, which may result in an accident.
◇To inspect the air cooling fan and reset the "BATTERY NG" lamp, always be sure to stop the STP pump, turn OFF the primary power (Switch the breaker "OFF"), open the front panel, then turn ON the primary power. Failure to do so may result in electric shock or product damage due to
◇Before performing maintenance or inspections, power OFF the baking heater and the air cooling unit.
◇DO NOT touch any of the blocks, parts, or connectors inside the STP control unit (excluding the battery connector). These parts are excluded from maintenance or inspection.
12.1Replacing the Internal Battery
The STP pump is equipped with rechargeable batteries for backup during a power failure inside the STP control unit. In order to ensure that the battery functions normally during a power failure, replace the batteries before the end of their life (approx. one year).
See Section 9.5, "How to Replace the Internal Battery."
The "Battery Instruction Label" is affixed to the front panel. After replacing the battery, always record the next replacement date.
12.2Inspecting the Air Cooling Fan
First stop the STP pump. Next turn OFF the primary power (switch the breaker "OFF"), open the front panel, and turn ON the primary power (Switch the breaker "ON"). Confirm that the air cooling fan (See Figure 4.3) inside the STP control unit is operating. Then, turn OFF the primary power (Switch the breaker "OFF") and close the front panel.
If the air cooling fan is not operating, contact Seiko Instruments to replace it.
NOTICE
◇It is recommended to inspect the air cooling fan when replacing the battery.
