6.1.8Abnormal Battery Voltage
When battery capacity became less than operating limit value or there was connection mistake, there may be the thing that battery abnormality is detected. When battery abnormality was detected, the STP pump does not operate even if the STP pump START operation is performed.
The "FAILURE" lamp lights
(Both the "EMERGENCY OPERATION" lamp and the "BATTERY NG" lamp inside the STP control unit front panel may light).
When battery voltage became less than DC21V, battery abnormal detection operates.
However, when capacity of battery is less than operating limit value largely, there may be the thing that battery abnormal detection does not operate.
CAUTION 
◇NEVER disconnect the internal or external battery connection cable while the STP pump is under POWER ON state.
NOTICE
◇When the "BATTERY NG" lamp inside the STP pump front panel comes on, "FAILURE" and "EMERGENCY OPERATION" lamps also come on.
When the power is turned on again, the "FAILURE" lamp goes out, while the "BATTERY NG" and “EMERGENCY OPERATION" lamps still remain lit.
6.1.9Failure of Brake
If the brake is broken, the emergency vent. valve is opened to force the STP pump to stop.
