Iijima PACK MASTER RO-105S, Operation Manual

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24
Symptom Check Action
Refer-
ence
page
The power does not
turn ON.
The display does
not turn ON.
Did you press ? Press .
3
Are the batteries set? Insert the batteries.
Are the batteries old? Replace the batteries with new ones.
Are the batteries inserted in the right direction? Reinsert the batteries in the right direction.
Is 100 VAC power supplied? Connect the AC adapter.
Is the AC adapter correct? Use the enclosed AC adapter.
If the symptoms do not improve even after taking
the above actions, the main unit may be faulty.
Make a request for repairs.
33
The displayed O
2
measurement value
is low.
Was the span calibrated? Take sufficient time to stabilize and then calibrate the span.
(If an approx. 5% deviation from the true value can be tolerat-
ed, the span should be calibrated when the oxygen concen-
tration in the atmosphere is 20% O
2
or less, or 22% O
2
or more
as a guide.)
6
Has water or foreign matter gotten between the
oxygen sensor and housing?
Remove the oxygen sensor and clean the inside of the hous-
ing. Lightly wipe the metal mesh at the center of the oxygen
sensor surface with tissue paper, etc., to remove any moisture
or foreign matter. Replace the needle, membrane filter, check
valve, and sampling tube with new parts.
21
Is the oxygen sensor wet, or have crystals formed
on the surface?
Replace the oxygen sensor with a new part.
(Contact the dealer from which you purchased the product if
the warranty is still valid.)
21
33
If the symptoms do not improve even after taking
the above actions, the main unit may be faulty.
Make a request for repairs.
33
The displayed O
2
measurement value
is high.
Was the span calibrated? Take sufficient time to stabilize and then calibrate the span.
(If an approx. 5% deviation from the true value can be tolerat-
ed, the span should be calibrated when the oxygen concen-
tration in the atmosphere is 20% O
2
or less, or 22% O
2
or more
as a guide.)
6
Was a sample with a high concentration of O
2
just
measured?
Measure the atmosphere once and then measure the same
again The value can be high immediately after a high concen-
tration sample was measured.
Is the connection of the needle, membrane filter,
check valve, or sampling tube loose?
Securely tighten the connection for the needle, membrane
filter, check valve, or sampling tube.
21
22
Is the needle, membrane filter, check valve, or sam-
pling tube clogged?
Check for clogging. If clogged, unclog the part or replace it
with a new part.
If the symptoms do not improve, make a request for repairs.
16
21,22
33
Is the needle, membrane filter, check valve, or sam-
pling tube damaged?
Replace the damaged part with a new part.
21
22
Is the oxygen sensor correctly mounted?
- - - - - - - - - - - - - - - - - - -- - - - - - - - - - - - - - - - -
Is the O-ring for the housing deviated?
Align‌the‌▲‌mark‌on‌the‌probe‌(blue)‌with‌the‌▲‌mark‌on‌the‌
housing (red).
- - - - - - - - - - - - - - - - - - -- - - - - - - - - - - - - - - - - - - - - - - - -
Firmly mount the O-ring for the housing in the groove.
21
Is the oxygen concentration in the atmosphere 20%
O
2
or less, or 22% O
2
or more?
Calibrate the span.
6
If the symptoms do not improve even after taking
the above actions, the main unit may be faulty.
Make a request for repairs.
33