9. Troubleshooting
- 75 -
Symptom/Display FAULT
Causes
Actions
Flow rate
abnormalities
E-5 FLOW
●
Protective rubber
cap is not removed.
Remove the protective rubber cap from GAS IN and
GAS OUT.
Broken pump
Replace the pump unit.
Flow loss caused by
clogged dust filter
Replace the dust filter.
Flow loss caused by
bended or clogged
suction tube or
exhaust tube
Fix the defective parts.
The flow sensor is
disconnected or
improperly
connected.
Please contact RIKEN KEIKI.
Communication
abnormalities
E-6
(ETHERNET)
○
Communication
cable abnormalities
Check the wiring of gas detector and related devices
around it.
Disturbance by
external noise
Turn off and restart the gas detector.
If such a symptom is observed frequently, take
appropriate measures to eliminate the noise.
Clock abnormalities
E-9
○
Abnormalities of the
clock inside the gas
detector
Make a setting of Date/Time. Note that when the
sensitivity correction function of ESU is used,
correction may not be made properly.
If such a symptom is observed repeatedly, the built-in
clock is seemingly malfunctioning. Thus, it must be
replaced. Please contact RIKEN KEIKI.
System
abnormalities
E-9 SYSTEM
●
The rated voltage is
not supplied to the
gas detector.
Check the power supply, and supply the rated
voltage.
Abnormalities of
ROM, RAM or
EEPROM of display
unit
Please contact RIKEN KEIKI.
Pyrolyzer
abnormalities
E-7
PL UNIT
○
Pyrolyzer
failure
Turn off and restart the gas detector.
If the symptom does not improve, please contact
RIKEN KEIKI.
Cable abnormalities
(open circuit/not
connected/short
circuit)
Abnormalities of
ROM, RAM or
EEPROM of
pyrolyzer controller
Disturbance by
external noise
Turn off and restart the gas detector.
If such a symptom is observed frequently after the
detection mode is activated, take appropriate
measures to eliminate the noise.
