Riken Keiki TP-70DGII, Руководство по эксплуатации

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9. Troubleshooting
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9.
Troubleshooting
The troubleshooting does not explain the causes of all the malfunctions which occur on the gas detector.
This simply helps to find the causes of malfunctions which frequently occur. If the gas detector shows a
symptom which is not explained in this manual, or still has malfunctions even though remedial actions are
taken, please contact RIKEN KEIKI.
<Abnormalities on Unit>
Symptom/Display FAULT Causes Actions
The power cannot
be turned on.
－
The power switch is
turned off. Turn ON the power switch.
Abnormalities/mom
entary blackout of
power supply
system Provide the rated voltage.
Take measures such as checking or adding the UPS,
power supply line filter and insulation transformer.
Cable abnormalities
(open circuit/not
connected/short
circuit) Check the wiring of gas detector and related devices
around it.
Fuse disconnection Find out why the fuse has blown and take appropriate
actions before replacing it.
If the power still cannot be turned on after
replacement, the inside temperature fuse needs to be
replaced. Please contact RIKEN KEIKI.
Abnormal
operations ○ Disturbances by
sudden surge noise,
etc.
Turn off and restart the gas detector.
If such a symptom is observed frequently, take
appropriate measures to eliminate the noise.
Incorrect flow rate
indicator
(Specified Value
Display does not
correspond to 0.5
L/min.) ○ Improper flow rate
default set Seemingly performed an improper default set, i.e.,
performed a default set of flow rate on the gas
detector when the flow rate is not 0.5 L/min.
Prepare another flow meter and perform the flow rate
default set again.
If such a symptom is observed frequently, the flow
sensor is seemingly malfunctioning. Thus, it must be
replaced. Please contact RIKEN KEIKI.
● : Lamp on
○ : Lamp off