Hach BioTector B3500s, User Manual

Page: 143 / 166

Page 143
52_HIGH CO2 IN BASE CO
2
level in the base reagent, which is
checked during the Zero Calibration or
Zero Check cycles, is higher than the
“BASE CO2 ALARM” level
programmed in Fault Setup menu.
Confirm the base reagent CO
2
filter is serviced and in good
condition, and the container is
sealed.
Check reagent quality.
Replace the base reagent.
62_SMPL PUMP STOP ON Sample Pump stopped with its rotation
sensor ON or the sensor is faulty and it
is always showing ON. Run the Sample Pump and check
the rotation.
Check pump sensor signal looking
at DI15 in Digital Input menu.
Replace the pump.
63_SMPL PUMP STOP OFF Sample Pump stopped with its rotation
sensor OFF or the sensor is faulty and
it is not sensing the rotation of the
pump. Run the Sample Pump and check
the rotation.
Check pump sensor signal looking
at DI15 in Digital Input menu.
Replace the pump.
81_ATM PRESSURE HIGH System atmospheric pressure sensor
reading is above 115kPa. Therefore,
the sensor reading is defaulted to
101.3kPa fault operation mode. Check ADC[05] in Analog Input
menu, which should be ~4 Volts.
Faulty pressure sensor.
Replace the motherboard.
82_ATM PRESSURE LOW System atmospheric pressure sensor
reading is below 60kPa. Therefore, the
sensor reading is defaulted to
101.3kPa fault operation mode. Check ADC[05] in Analog Input
menu, which should be ~4 Volts.
Faulty pressure sensor.
Replace the motherboard.
83_SERVICE TIME The service counter has counted down
the days between service intervals and
indicates that service is required. Service the BioTector.
After service, acknowledge the
warning by resetting the counter
using the “RESET SERVICE
COUNTER” function in
Diagnostics, Service menu.
84_SAMPLER ERROR Warning generated on the BioTector
venturi/vacuum sampler due to no/low
sample or low air pressure/vacuum in
the sampler. Check the LCD screen of the
venturi/vacuum sampler for
details.
See BioTector venturi/vacuum
sampler user manual.
88_O2 CONTROLLER
WARN A problem has been found during
communication with the O2-Controller
Board.
The communication between the O2-
Controller Board and the Motherboard
is lost. Check LED 2 (L2) on the O2-
Controller Board, it should be on.
Check the 24V DC power on the
O2-Controller Board at terminals
N01 and N02.
Check the data cable (ribbon
cable) connections on the board.
Power down and power up the
BioTector to reset the system.
Replace the board.