21
TI 11B08A01-01E
l
Operation
WARNING
• Do not open the doors and the covers. Refer servicing to propery trained personnel. High
voltage and high temperature are presented on the inside parts. If contacted, produce
electric shock and burns.
•
Before opening the doors and the covers, turn off the power under the permission of the
administrator and wait for at least 25 minutes with the Protective gas (instrumental air)
supplied.
• Electrostatic charge may cause an explosion hazard.
Avoid any actions that cause the generation of electrostatic charge, such as rubbing with a
dry cloth.
• Do not put anything on the surface of the Operating display (touch operation panel) such as
clear protection film. This would be a violation for Ex-proof cirtification requirements.
CAUTION
•
The oven is extremely hot after turning off the power immediately. Keep the protection gas
(instrumental air) supplied for more than an hour after turning off the power. Keep hands
away from the oven components.
• The protective gas shall be instrumental air.
• Temperature of protective gas (instrumental air) at the inlet of pressurized enclosure shall be
comply with the following temperature class range.
T1: -10 to +40°C
T2: -10 to +40°C
T3: -10 to +45°C
T4: -10 to +50°C
FM-X, CSA-X, ATEX, IECEx, NEPSI, TIIS
<Power on>
(1)
Power is supplied to the protection system (flameproof enclosure).
(2) Protective gas (instrumental air) is supplied to the protective gas (instrumental air) inlet.
(3) When the internal pressure in the electronics section, which is the control unit and oven unit
1 to 3, exceeds 392 (Pa), purging to each electronics section begins.
(4) After 21 ±3 minutes purging, power is applied to the electronics section of the control unit.
On the other hand, it does not be applied to the electronics section of the oven unit 1 to 3,
the heater and detector in the oven yet.
(5) When the internal pressure in the oven unit 1 to 3 exceeds 392 (Pa), purging to each oven
unit begins independently.
(6) After the purging time as follows, power is applied to the electronics section of the oven unit.
Then the hydrogen limiting unit, the heater and detector in the oven are ready for operation.
The purging time depends on the flameproof certifications.
TIIS, FM, CSA:
9 ±2.5 minutes
ATEX, IECEx, NEPSI: 11 ±3 minutes
<Power off>
(1) The operation and supply of sample to be measured are stopped.
Sep. 07, 2017-00
