Riken Keiki PLU-70 User manual

PT9E-0070
Pyrolyzer Unit
(for GD-70D Series)
PLU-70
Operating Manual
Request for the Customers
•Read and understand this operating manual before using the pyrolyzer unit.
•You must operate the pyrolyzer unit in accordance with the operating manual.
•Regardless of warranty period, we shall not make any compensation for accidents and
damage caused by using this product.
The compensation shall be made only under the warranty policy of products or parts
replacement.
•Because this is a safety unit, a regular maintenance for every six months and daily
maintenance must be performed.
•If you find abnormalities in the pyrolyzer unit, please notify them to our local representative
immediately.
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Preface
PLU-70 - 2 -
Preface
Thank you for choosing the pyrolyzer unit PLU-70 designed for dedicated use with our gas detector head
GD-70D series. Please check that the model number of the product you purchased is included in the
specifications on this manual.
This pyrolyzer unit is designed for dedicated use with the gas detector head GD-70D series and must be
used in combination with the GD-70D series as the base unit.
This operating manual explains how to use the pyrolyzer unit PLU-70 installed on the gas detector head.
The basic operating procedures conform to those of the base unit, GD-70D series. This operating manual is
intended as a complement to the GD-70D series operating manual.
For proper use of the pyrolyzer unit, please read and thoroughly understand both this operating manual and
the GD-70D series operating manual before use.
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- 3 - PLU-70
<Contents>
Preface .................................................................................................................... 2
Important Notices on Safety .................................................................................... 4
1. Overview ................................................................................................................. 6
1-1. Product components................................................................................................ 6
1-2. Product specifications.............................................................................................. 7
1-3. List of accessories................................................................................................... 7
1-4. Names and functions for each part.......................................................................... 8
1-5. Block diagram.......................................................................................................... 10
2. Installation ............................................................................................................... 11
2-1. Requirements .......................................................................................................... 11
2-2. Installation of pyrolyzer unit ..................................................................................... 12
2-3. How to wire.............................................................................................................. 16
2-4. How to tube ............................................................................................................. 18
2-5. Relocate .................................................................................................................. 19
2-6. Disposal................................................................................................................... 19
3. How to Operate ....................................................................................................... 20
3-1. Preparation for start-up............................................................................................ 20
3-2. How to start the pyrolyzer unit ................................................................................. 20
3-3. How to exit............................................................................................................... 21
4. Regular Maintenance Mode .................................................................................... 22
5. Maintenance............................................................................................................ 24
5-1. Gas calibration method............................................................................................ 24
5-2. Other adjustments/Cleaning method ....................................................................... 25
5-3. How to replace parts................................................................................................ 25
5-4. Procedures to store the pyrolyzer unit or leave it for a long time............................. 25
6. Troubleshooting....................................................................................................... 26
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Important Notices on Safety
PLU-70 - 4 -
Important Notices on Safety
<Definition of DANGER, WARNING, CAUTION, and NOTE>
DANGER Indicates an imminently hazardous situation which, if not avoided, will result in
death or serious injury or serious damage to the product.
The use of this symbol is to be limited to the most extreme situation.
WARNING Indicates a potentially hazardous situation which, if not avoided, could result in
death or serious injury on the human body or object.
CAUTION Indicates a potentially hazardous situation which, if not avoided, may result in
minor or moderate injury or some damage on the human body or objects. It
may also be used to alert against unsafe practices.
NOTE This means "ADVICE" at operation.
<Danger Cases>
DANGER
This is not an explosion-proof unit. You must not use it to detect gases exceeding the lower explosive limit (LEL).
<Warning Cases>
WARNING
Power Supply
Before turning on the pyrolyzer unit, always check that the voltage is properly applied. Do not use an unstable
power supply because it may cause malfunctions.
Need of grounding circuit
Do not cut the grounding circuit inside or outside the pyrolyzer unit or disconnect the wire from the grounding
terminal.
Tubing
The pyrolyzer unit and the base unit, gas detector head, are designed to draw gases around them under the
atmospheric pressure. If excessive pressure is applied to the sampling inlet and outlet (GAS IN, GAS OUT),
detected gases may be leaked from its inside, thus leading to dangers. Be sure that excessive pressure is not
applied to the pyrolyzer unit and the gas detector head while used. Detected gases must be exhausted from the
detected gas exhausting outlet (GAS OUT) on the bottom of the gas detector head to which an exhaust tube is
connected, to a point regarded as a safe place.
Operation in a gas
Do not operate the pyrolyzer unit in a place where combustible gases or vapors are present. Operating the
pyrolyzer unit in such an environment will lead to extreme dangers.
Pyrolyzer heater (pyrolyzer)
The pyrolyzer heater becomes hot. Do not touch the pyrolyzer heater because your hands may be burnt. Do not
touch the pyrolyzer heater just after power-off because it is still hot.
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Important Notices on Safety
- 5 - PLU-70
<Precautions>
CAUTION
Do not use a transceiver (walkie-talkie) near the pyrolyzer unit.
Radio wave from a transceiver near the pyrolyzer unit or its cables may affect reading. When using a transceiver,
it must be used in a place where it disturbs nothing.
To restart the pyrolyzer unit, you must wait five seconds more before doing it.
Restarting the pyrolyzer unit within five seconds may cause errors.
Attach the dust filter before using the pyrolyzer unit.
Before using the pyrolyzer unit, attach the specified filter to prevent disturbances by possible gas adsorption or air
dust.
A dust filter to be used varies depending on the gas to be detected. For more information on dust filters, please
contact our sales department.
Observe the operating restrictions to prevent condensation inside the tube.
Condensation formed inside the tube causes clogging or gas adsorption, which may disturb accurate gas
detection. Thus, condensation must be avoided. In addition to the installation environment, carefully monitor the
temperature/humidity of the sampling point to prevent condensation inside the tube. In particular, when detecting
a gas which is dissolved into water and corrodes contacted materials, such as a strong acid gas, the gas is
undetectable and furthermore may corrode internal parts. Please observe the operating restrictions.
Do not disassemble/modify the pyrolyzer unit, or change the settings if not necessary.
Disassembling/Modifying the pyrolyzer unit will invalidate the warranty of the performance. Changing the settings
without understanding the specifications may cause alarm malfunctions. Please use the pyrolyzer unit properly in
accordance with the operating manual.
Do not forget to perform a regular maintenance.
Since this is a safety unit, a regular maintenance must be performed to ensure its safety. Continuing to use the
pyrolyzer unit without performing a maintenance will compromise the sensitivity of the sensor, thus resulting in
inaccurate gas detection.
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1 Overview 1-1. Product components
PLU-70 - 6 -
1
Overview
1-1. Product components
<Pyrolyzer Unit (PLU-70)>
<Standard Accessories>
•Operating manual
•Protective rubber cap (to be removed when using the
pyrolyzer unit)
•Dedicated handling lever (for wiring)
•Dedicated U-tube
<Gas Detector Head GD-70D Series (Base Unit: Option)>
* This pyrolyzer unit is designed for dedicated use with the gas
detector head GD-70D series. Use the pyrolyzer only after
installation on the base unit, GD-70D series.
Gas detector head
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1 Overview 1-2. Product specifications
- 7 - PLU-70
1-2. Product specifications
Power Display POWER lamp on (green)
Recommended
Power Cable
Cable of CVV, etc.(1.25sq) - 2-core
Power Supply 24VDC ±10%
Power
consumption
Max. 25 W
Tube Connecting
Hole
Rc1/4 (O.D Φ6-1t half-union for Teflon tube<PP>supplied)
Operating
temperature
0-40°C (at a constant condition)
Operating humidity 30-80%RH (Non-condensing)
Structure Box type/Wall mounted type
External
Dimensions
Approx. 70(W)x120(H)x145(D) mm (projection potions excluded)
Weight Approx. 0.9 kg
Outer Color PLU main unit: grey
Front door: white
1-3. List of accessories
•Operating manual
•Protective rubber cap
•Dedicated handling lever
•Dedicated U-tube
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1 Overview 1-4. Names and functions for each part
PLU-70 - 8 -
1-4. Names and functions for each part
<Appearance>
GD-70D connecting tube
Screw for grounding earth rod
Protective cover for power switch
Power switch
M5 mounting hole
Fan exhaust hole Power lamp
External wire hole
Connector for PoE
GD-70D connecting cable
GAS OUT (Unit: mm)
GAS IN
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1 Overview 1-4. Names and functions for each part
- 9 - PLU-70
<Components of the Pyrolyzer Unit>
<Wall-mounted Unit>
CAUTION
•Each unit consists of precision parts. When a unit is detached, be careful not to drop it. Dropping the
unit compromises its original performance or causes malfunctions.
Mounting hole: A hole for wall-mount.
Terminal plate: A power terminal (2P).
Lock lever: A lever to lock the PLU main unit.
Wall-mounted unit
PLU main unit
GAS IN
For tubing to the gas detector head
Power lamp
Lock lever
Inside the PLU main unit
(with the front cover open)
Pyrolyzer heater
Fan
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1 Overview 1-5. Block diagram
PLU-70 - 10 -
1-5. Block diagram
<Electric Diagram>
<Tubing Diagram>
Controller
(CPU)
Flow Sensor 2
Bypass flow rate
Flow Sensor 1
Total flow rate
POWER INPUT(DC:24V)
Power supply part
Pyrolyzer
(Pyrolyzer heater)
PL-70
Fan
Display
(POWER lamp)
Power supply circuit
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