SMC Networks IDU22E-30 User manual

IDX-OM-K012-C
Initial issue August, 2006
3rd edition : Nobember,2010
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Operation Manual
PRODUCTNAME
Refrigerated Air Dryer
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MODEL/ Series
IDU22E-30
IDU37E-30
IDU55E-30
IDU75E-30 
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Please read this manual prior of using the air dryer. Keep the manual readily available for
reference.
© 2010 SMC CORPORATION All Rights Reserved.

To Customers
Thanks for purchasing SMC Refrigerated Air Dryer.
This opertion manual must be read and understood throughoutly before handling. It provides all essential
information for maximizing product operating efficiency, as well as, for safe and longer life span operation.
For safety operation of SMC Refrigerated Air Dryer, read thoroughly and follow stated safety instructions, as well
as regulation stated within ISO 4414*1 & JIS B 8370*2.
*1) ISO 4414: Pneumatic fluid power – Recommendations for the application of equipment to transmission
and control systems.
*2) JIS B 8370: Pneumatic fluid power – General rules relating to systems
This manual explains about installation and operation of the product. Only those who have thorough
understanding of the fundamental operating procedure or have basic knowledge and skills of handling industrial
product for the installation and operation of the product are qualified to perform installation and operation.
The contents of the operation manual and the other documents attached to the product cannot become a part of
the contract clause or cannot change and modify existing agreements, promises, and relationship.
Any statements contained in the operation manual cannot be newly guaranteed and modify existing guarantee
certificate.
You are not allowed to copy any part of this operation manual for usage of third person without informing it to us
beforehand.
Caution: Please understand that the contents of this operation manual are subject to
changed without previous notice.

Air Dryer Table of Contents
Table of Contents - 1
Table of Contents
To Customers
Chapter i Safety Instructions
i -1 Warning: Before Using Air Dryer.......................................................................... i - 1
i - 1 - 1 Meanings of signs: Caution, Warning, Danger.......................................................... i - 1
i -2 Danger Classifications / Position of Danger warning label............................ i - 3
i - 2 - 1 Danger Classifications ............................................................................................. i - 3
i - 2 - 2 Danger of Electricity................................................................................................. i - 4
i - 2 - 3 Danger of high Heat................................................................................................. i - 4
i - 2 - 4 Danger of Rotor....................................................................................................... i - 4
i - 2 - 5 Danger of CompressedAir Circuit ........................................................................... i - 4
i - 2 - 6 Positions of Danger Warning Label .......................................................................... i - 5
i - 2 - 7 Danger of Refrigerant............................................................................................... i - 6
i - 2 - 8 Cautions about Usage.............................................................................................. i - 7
i - 2 - 9 Other Label.............................................................................................................. i - 7
i - 3 Disposal .................................................................................................................... i – 8
i - 4 Limited warranty and Disclaimer / Compliance Requirements..................... i – 9
Chapter 1 Parts Name and Functions
1 - 1 Parts Names and Functions..................................................................................1 - 1
Chapter 2 Transportation / Installation
2 - 1 Transportation..........................................................................................................2 - 1
2 - 2 Installation................................................................................................................2 - 2
2 - 2 - 1 Location..................................................................................................................2 - 2
2 - 2 - 2 Anchorage..............................................................................................................2 - 2
2 - 2 - 3 Air piping.................................................................................................................2 - 2
2 - 2 - 4 Drain Tube..............................................................................................................2 - 3
2 - 2 - 5 Electric wiring..........................................................................................................2 - 3
2 -3 Cautions about reinstallation ...............................................................................2 - 4
Chapter 3 Operation / Shutdown
3 -1 Check points before operation.............................................................................3 - 1
3 -2 Operation ..................................................................................................................3 - 1
3 -3 Shutdown..................................................................................................................3 - 2
3 -4 Cautions about restart ...........................................................................................3 - 2
3 -5 Check points before restart ..................................................................................3 - 2
3 - 6 Precautions for long-term non-operation..........................................................3 - 2
Chapter 4 Maintenance
4 -1 Daily inspection.......................................................................................................4 - 1
4 -2 Periodical maintenance.........................................................................................4 - 1
4 - 2 - 1Cleaning of ventilation grille (suction grille)..................................................................4 - 1
4 - 2 - 2 Service parts ..............................................................................................................4 - 1
4 - 2 - 3 Cleaning of the case assembly ...................................................................................4 - 1
Chapter 5 Troubleshooting............................................................................................................5 - 1
5 - 1 Cause and countermeasure of errors.................................................................5 - 1
5 - 2 How to reset the thermal relay and high pressure switch .............................5 - 3
Chapter 6. References
6 - 1 Specifications ..........................................................................................................6 - 1
6 - 2 Dimensions...............................................................................................................6 - 2
6 - 3 Electrical Circuit......................................................................................................6 - 3
6 - 4 Compressed Air and Refrigerant Circuit / Operation Principles...................6 - 4

Air Dryer i Safety Instructions
Safety Instructions
ｉ
Before use, read and comprehend important cautionary
notification well on this operattion manual.
i – 1 Warning: Before Useing Air Dryer
In this chapter, the stated contents are especially about safety way to use the product. for customer.
An Air Dryer is installed on the downstream of the air compressor to remove moisture. We, manufacturer,
cannot take any responsibility if you use it for any other purpose.
An Air Dryer works with high voltage and has some parts that gets hot or rotates during operation. Ask vendor
if you need component replacement and servicing.
Not only people handle the air dryer but every people who perform maintenance on or do works related to it
should read safety instructions on this operation manual before handling.
This operation manual is not a general safety manual which is practiced by safety training representatives.
People who handle this product or work around it need to take training to comprehand inherent risks of it and
master measures for safety.
It is usually responsible for super visor to follow the safety instructions, but each operator or maintemance
representative should do daily operations on their own head.
Operators and maintemance representatives should take the safety of working place and work environment
into account.
It is necessary to think of the safety of working place and work environment for each task
Take enough safety training before the operation training. It is very dangerous to do operation training without
any safety training. Operation training must be paid attention to its safety.
Reset the protective circuit referring to “5-2 How to reset the thermal relay”.
i – 1 – 1 Meaning of Signs: Caution, Warning, Danger
These safety instructions are intended to prevent hazardous situation and/or product damage.
These instructions indicate the level of potential hazard by signs “Caution”, “Warning” or
“Danger”. Contents with these signs state about important instructions concerning safety.
Confirm where those signs are, and read and comprehend notices and cautionary notices well
before handling.
“Caution”, “Warning” or “Danger” is the order of importance (Danger>Warning>Caution).
Followings are the meanings of those signs.
Danger
Statements with the “Danger” sign explain about conditions in which there is a
possible result of serious injury or loss of life if someone handles wrongly during
operation or maintenance and did not follow the procedure to avoid danger.
i- 1

Air Dryer i Safety Instructions
Warning
Statements with the “Danger” sign explain about possibilities that can result in
serious injury or loss of life if someone handle wrongly during operation or
maintenance and did not follow the procedure to avoid danger.
Caution
Statements with the “Danger” sign explain about possibilities that can result in injury
or product damage if someone handles wrongly during operation or maintenance and
did not follow the procedure to avoid danger.
i- 2

Air Dryer i Safety Instructions
i – 2 Danger Classifications / Position of Danger Warning Label
To protect operator’s sefety, we group danger into some types uniquely and attached labels indicating those types.
Comfirm the contents of the danger types and positions of the labels before operation.
Warning
No one but professionals should operate an air dryer.
Transportation, installation, and maintenance involve risks. These should be done by
someone who have enough knowledge and experience about this product and incidental
devices.
No one but our service personnel or qualified person should open the cover panel of this
product.
Warning
Should any problem occur, address it according to statements on this manual.
•Identify problems according to “Chapter 5 Troubleshooting.”
•Ask repair and maintenance.
Warning
The product should not be operated in the event of any problems.
When the product gets out of order, shutdown it immediatery, and contact our service
person or qualified person.
i – 2 – 2Danger Classifications
Specific danger classification of this product is as follows.
Danger of Electricity
Since this product runs at hign voltage, there is the danger of electric shock. So, we displaya
symbol with indications, “Caution”, “Warning” or “Danger,” on the product and this
manual.
Danger of Heat
Since this product becomes hot while driving, there is the danger of burn injury. So, we
display a symbol with indications, “Caution”, “Warning” or “Danger,” on the product
and this manual.
Danger of Rotor
Since this product has parts that rotate while driving, there is the danger of catching your
fingers in or injury. So, we display a symbol with indications, “Caution”, “Warning” or
“Danger,” on the product and this manual.
i- 3

Air Dryer i Safety Instructions
i – 2 – 2 Danger of Electricity
Inside of this product, there is power-supplying section with high voltage separated by the
cover panel. Do not operate the product without the cover panel.
No one but trained qualified person should operate or inspect in the power transmission
sections.
Warning
Read with caution and pay attention to the notations on danger warning labels.
Do not remove or rub danger warning labels.
Confirm the positions of danger warning labels.
i – 2 – 3 Danger of High HeatWarning
Since this equipmant has parts that become hot during operation, there is the danger of burn
injury resulting from contact with them. What is more, there is also the danger of burn injury due to
remaining heat after the power supply is cut. Therefore, wait until the temperature of hot parts become
50oCand below.
i – 2 – 4 Danger of Rotor Warning
Since this product has parts that rotate during operation, there is the danger of burn injury
resulting from contact with them. Though sometimes those parts can temporarily stop the rotation,
they will rotate again, and so do not work with them while driving.
i – 2 – 5 Danger of Compressed Air Circuit
Warning
Before replacing or cleaning parts, be sure to bleed compressed air remain inside of the
product untill the gauge indicates “0”. If you do not do this air-bleeding, there would be the
great danger of unexpected accident, such as shooting out of parts when they are being unscrewed.
i- 4

Air Dryer i Safety Instructions
i – 2 – 6 Positions of Danger Warning Label
Warning
Read with caution and pay attention to the notations of danger warning labels.
Do not remove or rub danger warning labels.
Confirm the positions of danger warning labels.
Front Front
IDU22E, 37E IDU55E, 75E
WARNING 警告
!
1 Remove panels for maintenance only.
2 Never insert anything into product to ensure
safety.
3 Cut power prior to maintenance to prevent
electric shock.
4 Settle product to room temp.before main-
tenance toprevent burn or frostbite.
5 Ensure zero air pressure before replacing parts.
1 点検以外はﾊﾟﾈﾙを取り外さないこと。
2 回転物があるので指、棒状の物を差し
込まないこと。
3 感電の恐れがあるので、点検の前には電源を
切ること。
4 火傷の恐れがあるので、点検の前には装置を
常温にすること。
5 部品交換の前には必ず、空気圧力を"0"に
すること。
!
i- 5

Air Dryer i Safety Instructions
i – 2 – 7 Danger of Refrigerant Caution
This product uses Fluorocarbon (HFC) as a refrigerant.
This product is specified by “Class 1 Fluorocarbon Collection and Destruction Law in Japan.”
It is strictly forbitten to emit Fluorocarbon to the atmosphere. Before you repair this product,
you should collect the refrigerant with “Refrigerant collector.” Then, ask a destruction agency
to dispose of collected refrigerant. No one but someone have enough knowledge and
experience about the product and incidental device should do the collection of the refrigerant.
No one but service person or qualified person should remove the cover panel of the product.
The quantity and the sort of the Fluorocarbon are mentioned on the specification label that are
explained on Page i - 7.
Front Front
Fluorocarbon Collection and Destruction Law in Japan
フロン回収破壊法第一種特定製品
This product uses
Fluorocarbon (HFC) as a refrigerant.
1 It is strictly forbidden to emit Fluorocarbon
to the atmosphere.
2 When disposing thisproduct, Fluorocarbon
must be collected in an appropriate manner.
3 The kind of Fluorocarbon and the amount used
in this product is prited on thename label.
この製品には冷媒として、
フロン類（ＨＦＣ）が使われています。
1 フロン類をみだりに大気中に放出することは
禁じられています。
2 この製品を廃棄する場合には、フロン類の回収が
必要です。
3 フロン類の種類及び数量は、型式銘板に記載
されています。
IDU22E, 37E IDU55E, 75E
i- 6

Air Dryer i Safety Instructions
i – 2 – 8 Cautions about Usage
Warning
Read with caution and pay attention to the notations on danger warning labels.
Do not remove or rub danger warning labels.
Cimfirm the positions of danger warning labels.
i – 2 – 9 Other Label
Comfirm the model, contents of specifications on the label.
Front
S
p
ecification Label
Contents
MODEL: Model
VOLTAGE: Power supply voltage (frequency)
RUNNING CURRENT: Running current
REFRIGERANT: Type of refrigerant (amount)
WEIGHT:WeightMAX.PRESS: Maximum
operating pressure
SERIAL No.: Serial No.
MANUFACTURING DATE: Manufacturing Date
MADE IN: Country of manufacture
Front
CAUTION 注意
!
1
2Read manual before operation. Ensure vantilation and maintenance
space.
p water away from the product.
ecure In / Out connector with spanner
during piping.
Wait 3 minutes before restart.
Ensure Running Condition / Evaporating
Temp. in green zone.
3 Kee
4 S
5
6
1
2 通
ご使用前に必ず取扱説明書を読んでください。
風、メンテナンススペースを確保して
ください。
雨や水滴がかからないようにしてください。
ＩＮ／ＯＵＴポートをスパナで固定して
配管 してください。
再起動は運転停止３分後に行ってください。
Ｒ ＵＮＮＩＮＧ ＣＯＮＤＩＴＩＯＮ・蒸 発温度計は
ーン帯で使用してください。
3
4
5
6
グリ
Front IDU22E, 37E IDU55E, 75E
AIR DRYER
MODEL
VOLTAGE
RUNNING CURRENT
REFRIGERANT
WEIGHT MAX.PRESS.
SERIAL No.
MAKER
MADE IN
i- 7

Air Dryer i Safety Instructions
i – 3 Disposal
When you dispose of the product, you shoud collect the refrigerant and the refrigerat oil enclosed in the
refrigerant circuit.
Caurion
A sort of Fluorocarbon (HFC) is used for this product as refrigerant.
This product is specified by “Class1 Fluorocarbon Collection Destruction Law in Japan.”
It is strictly forbitten by the law to emit the refrigerant to the atmosphere. Before you repair
this product, you should collect the refrigirant with “Refrigerant collector.” Then, ask a
destruction agency to dispose of collected refrigerant.
No one but someone have ebough knowledge and experience about the product and
incidental devices should do the collection of the refrigerant.
No one but service person or qualified person shoud remove the cover panel of the product.
The quantity and the sort of the Fluorocarbon are printed on the specification label.
Caution
Dispose of the refrigerant and refrigerant oil according to the bylaw or regulation of local
government.
Do not dispose of refrigerant oil together with domestic garbage. And do not burn it in
unauthorized incinerators.
No one but someone have enough knowledge and experience about the product and
incidental devices should do the collection of the refrigerant oil.
No one but service person or qualified person shoud remove the cover panel of the product.
If there are something not clear, please contact our service office.
i - 8

Air Dryer i Safety Instructions
i – 4 Limited warranty and Disclaimer / Compliance Requirements
The product used subject to the following “Limited warranty and Disclaimer“ and “Compliance Requirements.
Read and accept them before using the product.
Limited warranty and Disclaimer
1. The warranty period of the product is 1 year in service or 1.5 years after the product is delivered.
Also, the product may have specified durability, running distance or replacement parts. Please consult
your nearest sales branch.
2. For any failure or damage reported within the warranty period which is clearly our responsibility, a
replacement product or necessary parts will be provided.
This limited warranty applies only to our product independently, and not to any other damage incurred
due to the failure of the product.
3. Prior to using SMC products, please read and understand the warranty terms and disclaimers noted in
the specified catalog for the particular products.
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Compliance Requirements

1. The use of SMC products with production equipment for the manufacture of weapons of mass
destruction (WMD) or other weapon is strictly prohibited.
2. The exports of SMC products or technology from one country to another are govemed by the relevant
security laws and regulation of the countries involved in the transaction. Prior to the shipment of a SMC
product of a SMC product to another country, assure that all local rules goveming that export are known
and followed.


Caution

The Product is provided use in manufacturing industries.
The product herein described is basically provided for peaceful use in manufacturing industries.
If considering using the product in other industries, consult SMC beforehand and exchange
specifications or a contact if necessary.
If anything is unclear, contact your nearest sales branch.

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i - 8

Air Dryer 1 Name and Functions Parts
1
Parts Name and Functions
1-1 Parts Name and Functions
・IDU22E,37E
Front
Terminal block
You can see the terminal block when you
remove front panel. Connect the power
cable through the rubber grommet.
(3 phase AC200V)
Auto Drain
Check if drained
correctly once a day.
Com
p
ressed Air
(
IN
)
Ball Valve
Thermal relay
(The thermal relay is
placed at the inside of
a front panel.) Refer to
page 5-2 to reset the
thermal relay.
L1L2L3 PE
（ ）
Switch with Lamp
(ON/OFF Switch)
The lamp is continuously ON
during normal operation. Use it
for ON/OFF operations.
Evaporation
thermometer
(Evaporating Temp)
Indicates the temperature
of refrigerant of
low-pressure side.
During normal driving, it
indicates in the green
zone.
Drain Tube
Dischar
g
es drain.

not block with wall and so on.
Customer Connection Side
Terminal Connecting Screw: M3
Applied Pressure Terminal: 1.25-3
(Width 6.5mm and below)
Front panel mounting screw
I can be found at left side (4 pcs in total).
Right Side Ventilation Grille
(Outlet)
Waste heat will be exhausted
as hot air by the fan motor. Do
Compressed Air (OUT)
1- 1

Air Dryer 1 Name and Functions Parts
Fixing Screw for Front Panel
Another one is on the right side.
Left Side Ventilation Grille (Inlet)
Breathe in cooling air from this grill.
Do not bung up with wall and so on.
Rubber Grommet
Power cord outlet
Front
1- 2

Air Dryer 1 Name and Functions Parts
・IDU55E,75E
Front
Terminal block
You can see the terminal block when you
remove front panel. Connect the power
cable through the rubber grommet.
(3 phase AC200V)
Auto Drain
Check if drained
correctly once a day.
Com
p
ressed Air
(
IN
)
Ball Valve
Thermal relay
(The thermal relay is
placed at the inside of
a front panel.) Refer to
page 5-2 to reset the
thermal relay.
L1L2L3 PE（ ）
Switch with Lamp
(ON/OFF Switch)
The lamp is continuously ON
during normal operation. Use it
for ON/OFF operations.
Evaporation
thermometer
(Evaporating Temp)
Indicates the temperature
of refrigerant of
low-pressure side.
During normal driving, it
indicates in the green
zone.
Drain Tube
Dischar
g
es drain.

Right Side Ventilation Grille
(Outlet)
Waste heat will be exhausted
as hot air by the fan motor. Do
not block with wall and so on.
Customer Connection Side
Terminal Connecting Screw: M3
Applied Pressure Terminal: 1.25-3
(Width 6.5mm and below)
Front panel mounting screw
I can be found at left side (6 pcs in total).
High Pressure Switch
(The high pressure switch is placed at
the inside of a front panel.) Refer to page
5-2 to reset the high pressure switch.
Compressed Air (OUT)
1- 3

Air Dryer 1 Name and Functions Parts
Fixing Screw for Front Panel
Another one is on the right side.
Left Side Ventilation Grille (Inlet)
Breathe in cooling air from this grill.
Do not bung up with wall and so on.
Rubber Grommet
Power cord outlet
Front
1- 4

Air Dryer 2 Transportation / Installation
2
Transportation / Installation
Warning
Use the product in the right way. During Installation, operation, maintenance, and check,
you should be careful in keeping the safety of human body.
Caution
Transportation, installation, and maintenance including dangerous work must be done by
a personnel who has enough knowledge and experience about the product and the
sysytem.
2-1 Transportation
When you transport the product, you should follow these instructions below.
•You should uplift the product from the base surface with careful attention toprevent fallingsideways and
drop.
•Do not bring the product lying sideways. If you lay it sideways, it will be broken.
•Do not hang up the product.
•Do not transport the product with any part such as an air filter mounted on the fittings at the air inlet or
outlet port of the product. If it is unavoidable to transport the product with such a part mounted, support
the mounted part with a bracket to prevent the product from being affected by vibration during
transportation
Warning
Those instructions above must be followed because the product is so heavy that it carries
a great risk to transport.
IDU22~75E are 90~170kg or more. They must be transported by forklift of IDU22E~IDU75E.
2 - 1

Air Dryer 2 Transportation / Installation
2-2 Installation
2-2-1 Location
The product should not be used or stored in the circumstances as follows.
Those circumstances will cause not only malfunction but also failures.
•Environment where the product is
exposed to rainwater, moisture vapor,
salty water, oil and so on.
•Locations where dust or particles are.
•Locations where inflammable or
explosive gas are.
•Locations where corrosive gas, solvent,
combustible gas are.
•Locations that receive direct sunlight or
where radiant heat is generated.
•Locations where ambient temperature
is beyond following range:
On-stream: 2 ~ 40oC
Storage: 0 ~ 50oC (when there is no
drain water inside of the piping)
•Locations where temperature changes
rapidly.
•Locations where strong
•electromagnetic noise is generated
(locations where electromagnetic field,
strong magnetic field, surge is
generated)
•Circumstances where static electricity
is produced or discharged through the
body of the product.
•Locations where strong high frequency
wave is generated.
•Locations where danger of thunder is
apparent.
•Locations by loading on vehicles,
marine vessels, and so on.
•Locations whose altitude is higher than
2,000 meters.
•Circumstances where strong vibration
or impact are transmitted.
•Circumstances where too much force
and weight are put on the body of the
product that causes it to deform.
•Circumstances where enough spaces
cannot be taken to do maintenance (in
the plant where the product is
operated).
Spaces needed for maintenance
Front : 600 mm
Rear : 600 mm
Top : 600 mm
Right : 600 mm
Left : 600 mm
•Locations the ventilation grille of the
product can be blocked.
•Place where rejection style air of air
compressor or other driers (hot wind) is
inhaled.
Warning
Do not use and store in environment having compressed air or ambinet atmosphere which
includes the following substances. It could result in failure of the product and damage of
components, which leads to injury.
- Corrosive gas, Organic solvent, Chemicals
2-2-2 Anchorage
•The air dryer should be installed on a vibration-free, stable, horizontal flat surface.
•Refer to “Chapter6 6-2 Dimensions” for the dimensions.
•Fix by bolts to prevent falling down. The bolts can be prepared separately as an accessory.
Model No. Name Quantity Applicable Model
IDF-AB501 Anchor bolt set 1 (4 pcs／1 set）IDU22E,IDU37E,IDU55E,IDU75E
2-2-3 Air piping
•Connection to the inlet and outlet of compressed air should be made removable by using union and so
on.
•Pressing the hexagonal fitting with screw wrench and so on, connect the air piping fittings to the body.
•When mounting any part such as an air filter on the fitting at the compressed air inlet or outlet port,
support the part to prevent excessive force from being applied to the product.
2 - 2

Air Dryer
2 Transportation / Installation
•Be careful not to let the vibration of the air compressor transmit.
•If the temperature of compressed air on the inlet side is higher than 80oC, place an aftercooler after the
air compressor. Or, make the temperature of the place where the air compressor is installed lower than
80oC.
•Flash the piping sufficiently in order to avoid any foreign substances such as dust, sealing tape, liquid
gasket, etc. when piping before piping connection.Foreign substances in the piping can cause cooling
failure or drainage failure.
•Use pipes and fittings that have enough endurance against the operating pressure and temperature.
And connect it firmly to prevent air leakage.
•Provide bypass piping to make it possible to do maintenance without stopping the air compressor.
We recommend the bypass piping sets that
we are selling separately as accessories.
Model No. Name Q.t Applicable
Model
IDU-BP336 1 IDU22E
IDU-BP337 1 IDU37E
1 IDU55E
IDU-BP338
Bypass
piping
sets 1 IDU75E
Bypass
Valve Union Joint
Union Joint
Valve (OUT) Valve (IN)
Compressed Air (IN)
Compressed Air (OUT)
2-2-4 Drain Tube
•A polyurethane tube of 10mmexternal diameter is attached to the drain tube. The outlet end of the tube
is released to atmosphere. And let drain flow through the tube into a scupper and so on.
•Using the pressure of the compressed air, drain will be discharged periodically. Fix the outlet end of the
tube so as not to swing during discharge.
•Prevent the drain tube from riser piping.
•Prevent the drain tube from being folded or flatted. Since the drain tube is coming from the bottom of the
body, be careful to avoid the body from stomping over the tube during installation.
2-2-5 Electric Wiring
Warning
No one but qualified person should do the wiring work.
・Before wiring, you must cut the power off for safety. Do not work under any
energized conditions.
・Supply power from a stable place, which is free from the effect of surge.
Ensure that an Ground Fault Circuit Interrupter(GFCI) with appropriate capacity for
earth leakage and load is used in the power supply of the product to prevent
electrical shock and burnout of the compressor motor. See “6-1 List of
specifications” for details.
・Supply power for the product should meet the specifications.
・The product should be grounded for safety.
・Do not connect the earth to a water pipe, a gas pipe, or a lightening.
・Do not plug too many leads into a single socket. That causes exothenmic heat or fire.
・Do not convert the wiring to use.
・In European countries, a circuit breaker that meets the IEC standard should
・be used for the supply power.
How to connect wiring
・Take off the front panel in front of the product and connect the power supply (AC200V) to the
terminal base.
・Install an Ground Fault Circuit Interrupter(GFCI) to the power supply (Prepare by yourself)
[ Sensed current: 30mA and below, Rated current 10A (IDU75E…Rated current 15A) ]
2 - 3

Air Dryer
2 Transportation / Installation
Specification of power cable
Prepare following power cable.
Power cable: 1.25mm2(16AWG), External diameter: about 8 ~ 12mm
IDU22E ~ 75E-30 (3 phase power supply) …4 cores (including grounding)
Additional length of about 0.2m is needed to wire inside of the product.
Length of the power cable
The length of the power cable should extend less than 30m from the product.
Connecting to the power supply
Connect the power cable and the earth to the terminal block. M3 screwis used for the connection part. Make sure
to use round crimped terminal.
Applicable crimped terminal: 1.25-3 (Width: 6.5mm and below)
Wiring procedure
・Remove the front panel.
・Insert the cord through the rubbergrommet and connect it to the terminal block (refer to the label on the terminal
block).M3 screw tightening torque: 0.6~1Nm
During wiring work, do not touch other sections except terminal block.
・Attach the front panel as it were.
2-3 Cautions about Reinstallation
Caution
No one but someone who has enough knowledge about the product and incidental
devices should reinstall in another place. And following instructions must be executed.
If you move the product and reinstall it into another place after some operations (including trial running),
instructions that are not only following ones but also all of those in the chapter 2 should be followed.
Disassembly of the power cable
Cut off the power source when you disassemble the power cable.
Warning
No one but qualified personnel should do the electric wiring.
Cut off the power supply for safety before the wiring. Do not work under energized
condition.
Disassembly of the air piping Warning
No one but qualified personnel should do the air piping.
Separate the compressor from the product for safety before removing the iping. Do not
remove any piping when there is remaining compressed air pressure inside of it.
・Remove the seal tape completely after detaching the piping. Remained tape will cause imperfect
cooling and failure by entering into the body of the product.
Residual compressed air pressure release procedure
・Even while the dryer is removed, only when compressed air is
needed, open the bypass piping valve.
･Close the compressed air inlet and outlet valve.
･Make sure the ball valve located next to the auto drain opened.
Case Assembly
The ramainder depressure cock.
※It opens when turning in the
drection og the arrow of figure.
・Open the auto drain residualpressure release valve
to release air pressure inside the product. Refer to
the figure at right.
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