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5. Handling Precautions
Precautions during operation
（1）
Be sure to connect the earth wire when connecting power supply.
（2）
Securely connect with ADL311S or GB210A.
（3）
Using the blower at a low air amount may cause a malfunction. Set it at least 0.2m
3
/min or
more.
（4）
Flow meter for the oxygen sensor (small) and a flow meter for introducing N2 (large) are
located inside the left side door. Adjust the flow meter for the oxygen sensor to 0.2L/min at
AIR IN during preparations and adjust the flow meter for introducing N
2
to 35
～
40L/min when
performing N2 IN.
（5）
When this unit is connected to ADL311S or GB210A, the blower of ADL311S or GB210A
cannot be used. Use the dial of GAS410 for setting an air amount.
（6）
Make sure that the glass chamber is fixed at the specified position without any play.
Check the connecting assembly when oxygen concentration will not decrease properly or its
increase speed has risen.
When a defect at a connection of pipes or at a packing is suspected, repair or replace the
relevant part.
（7）
Do not heat up the temperature around outlet over 100 Celsius degree, for the material of the
suction/exhaust hose, material of the filter, and performance of the blower may be
deteriorated..
（8）
Check the glass chambers are fixed to the specified position with no gap, and then turn on the
switches of blower and heater.
（9）
The unit is not explosion proof. You cannot use this unit in an atmosphere where a flammable
gas exists or at a place where a flammable gas may be produced.
（10）
If the leakage is existed between container for product and bracket at lower of the cyclone,
the dried powder may be stocked onto the lower of the cyclone without falling into the
container for product. Therefore, pay special attention to the unit with the container for
product be mounted.
（11）
When the heater is ON, do not expose the cap and bayonet of the spray nozzle to the
non-guard status, and do supply the air to the heater part for at least 0.1 to 0.2m
3
/min.
（12）
If the sample is not fed from the feeding pump, the following causes may be considered; the
sample tube is crushed at the roller of the pump, the inner wall of the tube is adhered tightly
without restoration, or the inner of the nozzle is blocked. Remove the cause, and reset to the
normal status.
（13）
Do not perform unattended operation during activating the unit. Since the unit is in idling
status and the nozzle is blocked of after the operation using sample, the temperature around
outlet is increased and the remaining sample is flown from the sample tube disconnected from
the unit, and these failures may cause the indeterminism accident.
（14）
There are to types of specimen tubes, those made of silicone and those made of Viton. Take
care they might be corroded, swell and break with some solvents during operation.
（15）
When the high temperature is set to the temperature around inlet for the operation, supplying
too excessive airflow of the blower to the unit may not reach the temperature to the setting
one caused by not keeping balance with the heater capacity. To resolve this error, turn down
the airflow of the blower, increase the setting temperature, and operate this unit. To avoid a
malfunction of the blower, set the air amount below the red zone on the dial scale. When you
operate the unit at a higher set temperature, the setting and the actual inlet temperature will
not match.
The heater will stop automatically when the inlet temperature exceeds 230
℃
, or when the
outlet temperature exceeds 110
℃
.
