SMC Networks IDFB22E-11,IDFB22E-23,IDFB55E-46,IDFB75E-46,DFB37E-23 Operation Manual

IDX-OM-K021

Initial issue October, 2006

Rev.F:Feb,2017

PRODUCT NAME

Refrigerated Air Dryer

MODEL / Series

IDFB22E-11 IDFB22E-11 - A,K,R,S,T,V

IDFB22E-23 IDFB22E-23 - A,K,R,T,V
IDFB37E-23 IDFB37E-23 - A,K,R,T,V

IDFB55E-46 IDFB55E-46 - A,L,R,T,V
IDFB75E-46 IDFB75E-46 - A,L,R,T,V

Please read this manual prior of using the air dryer. Keep the manual readily available for
reference.

© 2017 SMC CORPORATION All Rights Reserved.

To Customers

Thank you for selecting SMC Refrigerated Air Dryer.

This operation manual must be read and understood thoroughly before using the equipment. It provides all
essential information pertaining to safety, as well as, maximizing equipment efficiency in order to extend the life of
the equipment.

In addition, it is strongly recommended that you follow all the safety guidelines and regulations set forth by the
local government agency for proper installation and usage.

This manual explains about installation and trial operation of the equipment. These tasks should be performed
only by individuals with the proper training and have a good understanding of the air dryer.

There is no production amends or financial compensation due to dryers trouble.

This manual contains confidential information proprietary to SMC. It must not be reproduced or disclosed to
others, or used in any other way, in part or in whole, except as authorized in writing by SMC.

Caution: Please understand that the contents of this operation manual are subjected to

change without prior notice.

Table of Contents

Table of Contents - 1

Chapter i Safety Instructions

i - 1 Warning: Before Using Air Dryer ................................................................. i - 1

i - 1 - 1 Hazard, Warning, and Caution Used in This Manual ..................................... i - 1

I - 2 Danger Classifications/Position of Hazard warning Label ....................... i - 2

i - 2 - 1 Danger Classifications .................................................................................... i - 2

i - 2 - 2 Hazard of Electricity ....................................................................................... i - 3

i - 2 - 3 Hazard of Hot Surface .................................................................................... i - 3

i - 2 - 4 Hazard of Rotating Fan Motor ........................................................................ i - 3

i - 2 - 5 Danger of Compressed Air Circuit .................................................................. i - 3

i - 2 - 6 Positions of Hazard Warning Label ................................................................ i - 4

i - 2 - 7 Hazard of Refrigerant ..................................................................................... i - 5

i - 2 - 8 Cautions about Usage .................................................................................... i - 6

i - 2 - 9 Other Label ..................................................................................................... i - 6

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 Tie Down ...................................................................................................... 2 - 3

2 - 2 - 3 Air piping ...................................................................................................... 2 - 3

2 - 2 - 4 Drain Tube .................................................................................................... 2 - 3

2 - 2 - 5 Electric Wiring .............................................................................................. 2 - 4

2 - 3 Cautions for Reinstallation ......................................................................... 2 - 6

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

Table of Contents

Table of Contents

Table of Contents - 2

Chapter 5 Troubleshooting

5 - 1 Cause and countermeasure of errors ...................................................... 5 - 1

5 - 2 How to reset the thermal relay and high pressure switch

(Only IDFB55E, 75E) .......................................... 5 - 3

Chapter 6 References

6 - 1 Specifications ............................................................................................. 6 - 1

6 - 2 Refrigerant with GWP reference ............................................................... 6 - 2

6 - 3 Dimensions ................................................................................................. 6 - 2

6 - 4 Electrical Circuit ......................................................................................... 6 - 4

6 - 5 Compressed Air and Refrigerant Circuit / Operation Principles ...........6 – 5

Chapter 7 References for Option A

7 - 1 Safety instructions ..................................................................................... 7 - 1

7 - 2 Specifications ............................................................................................. 7 - 1

7 - 3 Air piping ..................................................................................................... 7 - 1

7 - 4 Air flow capacity ......................................................................................... 7 - 1

7 - 5 Compressed Air and Refrigerant Circuit / Operation Principles ........... 7– 2

Chapter 8 Specification for Option K

8 - 1 Safety instructions ...................................................................................... 8 -1

8 - 2 Specifications .............................................................................................. 8 -1

Chapter 8 Specification for Option L

9 - 1 Safety instructions ..................................................................................... 9 - 1

9 - 2 Specifications ............................................................................................. 9 - 1

9 - 3 Specification of heavy duty auto drain (ADH4000-04) ............................ 9 - 2

9 - 4 Maintenance................................................................................................ 9 - 2

Chapter 10 Specification for Option R

10 - 1 Safety instructions ................................................................................... 10 - 1

10 - 2 Specifications of the GFCI ....................................................................... 10 - 1

10 - 3 How to connect the power supply .......................................................... 10 - 1

10 - 4 Cautions for handling the GFCI .............................................................. 10 - 3

10 - 5 Electric circuit ........................................................................................... 10 - 3

Chapter 11 Specification for Option S

11 - 1 Safety instructions .................................................................................... 11 - 1

11 - 2 Specifications ............................................................................................ 11 - 1

Chapter 12 Specification for Option T

12 - 1 Safety instructions .................................................................................... 12 -1

12 - 2 Specifications ............................................................................................ 12 -1

12 - 3 Remote operation ...................................................................................... 12 -2

12 - 4 How to connect the power supply and signal cable .............................. 12 -2

12 - 5 How to re-start the operation ................................................................... 12 -3

12 - 6 Electric wiring diagram ............................................................................. 12 -4

Table of Contents

Table of Contents - 3

Chapter 13 Specification for Option V

13 - 1 Safety instructions .................................................................................... 13 -1

13 - 2 Specifications ............................................................................................ 13 -1

13 - 3 How to perform maintenance................................................................... 13 -2

13 - 4 Electric circuit ............................................................................................ 13 -2

Chapter 14 Service Record

14 - 1 Service Record .......................................................................................... 14 -1

Air Dryer i Safety Instructions

i-2Danger Classifications & Position of Hazard warning Labels

i - 2

IDX-OM-K021

i-2 Danger Classifications & Position of Hazard warning Labels

To help you recognize the hazards, the unit utilizes special graphics to indicate different hazards. Confirm the
contents of the hazards and the location of the labels before operation.

Warning

 Only properly trained, qualified personnel are allowed to perform tasks such as:

Operation, installation, relocation of equipment and maintenance works.

 Should any problem occurs, address it according to instruction in this manual.
 Identify problems following the guidelines in Chapter 5 for Troubleshooting before

proceed with maintenance works.

 The equipment should not be turn on in the event of any problems.

When the equipment gets out of order, shutdown immediately, and contact for
service

i-2-1 Danger Classifications

Specific danger classification of this equipment is as follows.

Hazard of Electricity

Since this equipment operates with high voltage, there is the danger of electric
shock. This special symbol is used, along with key words: “CAUTION”, “WARNING”
or “DANGER”, on the equipment and in this manual.

Hazard of Hot Surface

Since this equipment becomes hot while running, there is the danger of burn injury.
This special symbol is used, along with key words: “CAUTION”, “WARNING” or

“DANGER”, on the equipment and in this manual.

Hazard of Rotor

Since this equipment has parts that rotate at high speed while running, there is the
danger of bodily injury. This special symbol is used, along with key words: “CAUTION”,
“WARNING” or “DANGER”, on the equipment and in this manual.

IDFB Series

Air Dryer i Safety Instructions

i-2Danger Classifications & Position of Hazard warning Labels

i - 3

IDX-OM-K021

i-2-2 Hazard of Electricity

Warning

Inside of this equipment, there is a power-supplying section with high voltage
separated by the cover panel. Do not operate the equipment with the cover panel off.

i-2-3 Hazard of Hot Surface

Warning

Since this equipment has parts that become hot during operation, there is the danger
of burn-associated injuries. These parts remain hot even after power is off. Wait until
the unit has cooled down before touching.

i-2-4 Hazard of Rotating Fan Motor

Warning

Since this equipment has parts that rotate during operation, there is the danger of
injury resulting from direct contact. The fan and rotor will start/stop automatically.
Thus, do not work on them when power is on.

i-2-5 Danger of Compressed Air Circuit

Warning

Before replacing or cleaning parts, be sure to relief the pressure remained inside of the
equipment until the gauge indicates “0”. High pressure can propel object at high
velocity and cause injury.

IDFB Series

Air Dryer i Safety Instructions

i-2Danger Classifications & Position of Hazard warning Labels

i - 4

IDX-OM-K021

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

WARNING 警告

!

1 Remove panels fo r maintenance only.
2 Never insert an ything into product to en sure
safety.
3 Cut power p rior to maintenance to prevent
electric sho ck.
4 Settle product to room temp.before main­ tenance topr event 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。

!

IDFB Series

Air Dryer i Safety Instructions

i-2Danger Classifications & Position of Hazard warning Labels

i - 5

IDX-OM-K021

Front

i-2-7 Hazard of Refrigerant

Caution

・This equipment uses Fluorocarbon (HFC) as a refrigerant.

・It is strictly forbidden to emit Fluorocarbon into the atmosphere. Before you repair the

refrigerant circuit, you should collect the refrigerant with proper evacuation system.
The collected refrigerant should be properly recycled by qualified agency. Only
personnel with proper credential are allowed to handle refrigerant.

・Only properly trained qualified personnel are allowed to remove the cover panel of the

equipment.

・The quantity and the type of Fluorocarbon are mentioned on the specification label.

See Page i - 6, i - 7.

IDFB Series

Air Dryer i Safety Instructions

i-2Danger Classifications & Position of Hazard warning Labels

i - 6

IDX-OM-K021

i-2-8 Cautions about Usage

Warning

Please follow the instructions on all warning labels. Do not remove or deface
warning labels, and confirm the location of warning labels.

i-2-9 Other Label

IDFB22E / 37E

Front

Front

CAUTION 注意

!

1 Read manual before operation.
2 Ensure vantilation and maintenance
space.
3 Keep water away from the product.
4 Secure In / Out connector with spanner
during piping.
5 Wait 3 minutes before restart.
6 Ensure Running Condition / Evaporating
Temp. in green zone.

1　ご使用 前に必ず取 扱説明書を 読んでくださ い。
2　通風、 メンテナンススペース を確保して
ください。
3　雨や水滴がかからないよう にしてください 。
4　ＩＮ／ ＯＵＴポートをスパ ナで固定して
配管してくだ さい。
5　再起動 は運転停止 ３分後に行 ってください 。
6　ＲＵ ＮＮＩＮＧ 　ＣＯＮ ＤＩＴＩＯ Ｎ・蒸発 温度計は
　　グリーン帯で使用 してください 。

SMC AIR　DRYER

MODEL 　　

VOLTAGE 　

RATED CURRENT

MCA 　
MOPD 　
CMP LRA 　
AIR FLOW RATE 　
MAX. INLET PRESS. 　
MAX. INLET TEMP. 　
MAX.AMBIENT TEMP 　
MIN. AMBIENT TEMP　 　
REFRIGERANT R134a 　
LO.　SIDE　PRESS.　　　
HI.　SIDE　PRESS.　　　　　
WEIGHT 　
SERIAL No. 　　
MAKER

*12456789*

IDFB Series

Air Dryer i Safety Instructions

i-2Danger Classifications & Position of Hazard warning Labels

i - 7

IDX-OM-K021

IDFB55E / 75E

SMC AIR　DRYER

MODEL 　　

VOLTAGE 　
MCA 　
MOPD

COMPRESSOR RLA/LRA

FAN MOTOR HP/FLA 　
AIR FLOW RATE 　
MAX. INLET PRESS. 　
MAX. INLET TEMP. 　
MAX.AMBIENT TEMP. 　
MIN. AMBIENT TEMP.　 　
REFRIGERANT R407C 　
LO.　SIDE　PRESS.　　　
HI.　SIDE　PRESS.　　　　　
WEIGHT 　
SERIAL No. 　　
MAKER

*12456789*

Front

IDFB Series

Air Dryer i Safety Instructions

i-3Disposal

i - 8

IDX-OM-K021

IDFB Series

i-3 Disposal

When you dispose of the equipment, you should collect the refrigerant and the refrigerant oil inside the
refrigerant circuit.

Caution

This equipment contains Fluorocarbon HFC.
It is strictly forbidden to emit Fluorocarbon into the atmosphere. Before you

repair the refrigerant circuit, you should collect the refrigerant with proper
evacuation system. The collected refrigerant should be properly recycled by
qualified agency. Only personnel with proper credential are allowed to
handle refrigerant.

Only properly trained and qualified personnel are allowed to remove the
cover panel of the equipment.

The quantity and the type of Fluorocarbon are mentioned on the
specification label. See Page i - 6, i - 7.

Caution

Dispose of the refrigerant and refrigerant oil according to the regulation of
local government.

Only personnel with proper credential are allowed to collect refrigerant and
refrigerant oil.

Only properly trained and qualified personnel are allowed to remove the
cover panel of the equipment.

For any questions, please contact our factory or SMC authorized dealers.

Air Dryer i Safety Instructions

i-4 Limited warranty and Disclaimer / Compliance Requirements

i - 9

IDX-OM-K021

IDFB Series

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.

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.

Air Dryer 1Parts Name and Functions

1-1Parts Name and Functions

1 - 1

IDX-OM-K021

IDFB Series

1 Parts Name and Functions

1-1 Parts Name and Functions

• IDFB22E, 37E

Front

Switch with Lamp
(ON /OFF Switch)

The lamp is continuously ON
during normal operation.

Evaporation Thermometer

Indicates the evaporating
temperature of refrigerant on
low-pressure side.
During normal operation, the
indicator remains in the
green zone.

Ventilation Grille
(Exhaust)

Hot air will be exhausted
by condenser fan. Do
not block these vents.

Panel Lock (x 2)

Another one is on opposite side.

Drain Tube

Discharges drain.

Auto Drain

Check if drained correctly
once a day.

Compressed Air (IN)

Compressed Air (OUT)

Ball Valve

Front Panel

You can see the terminal block
when you remove this cover.
Connect the power cable through
the rubber grommet.

Customer Connection Side

Front

Rubber Grommet

Power cord outlet
(IDFB22E-11*

：Power cable wirth Plug)

Panel Lock (x 2)

Another one is on
opposite side.

Ventilation Grille (Suction)

Ambient air will be sucked by
condenser fan. Do not block
these vents.

Ｌ　　　Ｎ　　PE

Air Dryer 1Parts Name and Functions

1-1Parts Name and Functions

1 - 2

IDX-OM-K021

IDFB Series

• IDFB55E, 75E

Panel Lock (x 2)

Front

Switch with Lamp
(ON /OFF Switch)

The lamp is continuously ON
during normal operation.

Evaporation Thermometer

Indicates the evaporating
temperature of refrigerant on
low-pressure side.
During normal operation, the
indicator remains in the
green zone.

Ventilation Grille
(Exhaust)

Hot air will be exhausted
by condenser fan. Do
not block these vents.

Panel Lock (x 4)

There are on opposite too.

Drain Tube

Discharges drain.

Auto Drain

Check if drained correctly
once a day.

Compressed Air (IN)

Compressed Air (OUT)

Ball Valve

Front Panel

You can see the terminal block and
earth terminal block when you remove
this cover. Connect the power cable
through the rubber grommet.

Thermal Relay

(The thermal relay is placed at the
inside of a front panel.) Refer to page
5-3 to reset the thermal relay.

High Pressure Switch

(The high pressure switch is placed at
the inside of a front panel.) Refer to page
5-3 to reset the high pressure switch.

Earth Terminal Block

Screw = M4×10

Customer Connection Side

Customer Connection Point
(Earth Cable of customer)

Air Dryer 1Parts Name and Functions

1-1Parts Name and Functions

1 - 3

IDX-OM-K021

IDFB Series

Front

Rubber Grommet

Power cord outlet

Panel Lock (x 4)

There are on opposite too.

Ventilation Grille (Suction)

Ambient air will be sucked by
condenser fan. Do not block
these vents.

Air Dryer

2 Transportation / Installation

2-1Transportation

2 - 1

IDX-OM-K021

2 Transportation / Installation

Warning

 Only properly trained, qualified personnel are allowed to perform tasks such as:

Operation, installation, relocation of equipment and maintenance works.

 Strongly recommend to prepare the spare dryer when applying the dryer for

important equipment or system.

2-1 Transportation

When you transport the equipment, you should follow the instructions below:

 You should lift the equipment from the base surface with careful attention to prevent tipping over.
 Do not lay the equipment sideways, or you will damage the equipment.
 Do not suspend the equipment from the ceiling or hang from the wall.



Warning

This equipment is heavy.
Each model weights about 110lbs (50kg) or more. More than one person is required to move
it, a forklift is necessary.

IDFB Series

Air Dryer

2 Transportation / Installation

2-2Installation

2 - 2

IDX-OM-K021

2-2 Installation

2-2-1 Location

The equipment should not be used or stored in the following conditions: Those conditions will cause
not only malfunction but also failures.

 Environment where the equipment is exposed

to rainwater, moisture, salt water or oil.

 Locations where the equipment is exposed to

dust or particles

 Locations where the equipment is exposed to

flammable, combustible or explosive fumes.

 Locations where the equipment is exposed to

corrosive gas or solvent.

 Locations where the equipment is exposed to

direct sunlight or radiated heat.

 Locations where ambient temperature is

beyond following range:

On-stream: 36 to 104°F (2 to 40oC)
Storage: 32 to 122°F (0 to 50oC)

(when there is no drain water
inside of the piping)

 Locations where temperature changes rapidly.

 Locations where strong electromagnetic noise

is generated.

 Circumstances where static electricity is

produced or discharged through the body of the
equipment

 Locations where strong high frequency shock

wave is generated

 Locations where danger of thunder is apparent.
 Locations where loading on vehicles, marine

vessels, and so on

 Locations where 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 equipment
that causes it to deform.

 Circumstances where not enough clearance

spaces to do maintenance

Spaces needed for maintenance

Front : 2feet (0.6m)
Rear : 2feet (0.6m)
Top : 2feet (0.6m)
Right : 2feet (0.6m)
Left : 2feet (0.6m)

 Locations where ventilation grille of the

equipment can be blocked.

 Locations where the dryer could intake warm air

(for example from a compressor or other
dryers).

 Condition which has sudden pressure/flow rate

changes.

IDFB Series

Air Dryer

2 Transportation / Installation

2-2Installation

2 - 3

IDX-OM-K021

2-2-2 Tie Down

 The air dryer should be installed on a vibration-free, stable, horizontal, flat surface.
 Refer to “Chapter6 6-3 Dimensions” for the dimensions.
 This model should be installed using anchor bolts (not included) to prevent shifting during a potential

earthquake.

2-2-3 Air piping

 Connection to the inlet and outlet of compressed air should be made removable by using union or similar

connection.

 Support the IN/OUT ports with a wrench during tightening or loosing of fittings.
 Do not allow the equipment to support the weight of the piping.
 Isolate the vibration generated by the compressor.
 If the temperature of compressed air on the inlet side is higher than 122°F (50

o

C), place an aftercooler

unit after the air compressor.

 If the air supply makes high pressure fluctuation (pulsation), take any countermeasures such as

installing air tank.

 Clean pipes and fittings before use and select a suitable filter to prevent dust, oil or chips from entering the

air dryer, which can cause failure to the equipment.

 Use pipes and fittings that can withstand the operating pressure and temperature of the compressed air.

Make sure all connections are leak-free.

 Provide bypass piping to make it possible to do maintenance without stopping the air compressor.

2-2-4 Drain Tube

 A polyurethane tube (3/8inch) O.D. is attached to the auto drain. The end of the tube is open to

atmosphere to let drain flow through the tube into a collector or drain pipe.

 The compressed air is used to push out the drain periodically. Fix the outlet end of the tube in order to

prevent whipping action during discharge.

 Install the drain tube in such a way so that no drain is trapped.
 During installation, make sure the dryer does not sit on the drain tube which is at the bottom of the unit. Be

careful to avoid the dryer from crushing the tube during installation.

We recommend the bypass piping sets
available separately as accessories.

Compressed Air (OUT)

Compressed Air (IN)

Valve (IN)

Valve (OUT)

Union Joint

Union Joint

Bypass valve

IDFB Series

Air Dryer

2 Transportation / Installation

2-2Installation

2 - 4

IDX-OM-K021

IDFB Series

Warning

・To handle drain discharge, follow the safety guidelines such as wearing protective

goggles, apron, and gloves.

・In cases where oil is mixed in the wastewater discharged from the auto drain, the liquid

would be considered as toxic waste and treatment is necessary in accordance with local
regulations.

2-2-5 Electric Wiring

Warning

 Only properly trained and qualified personnel are allowed to perform wiring

work.

 Before wiring, you must disconnect the power. Do not work under any

energized conditions.

 Supply power from a stable source that is free from the effect of surge.
 Referring to “6-1 Specifications,” make sure to install a GFCI breaker that has

the right short circuit capacity and load capacity.

 Supply power of the equipment should meet the specifications on page 6-1.
 The equipment must be grounded for safety.
 Do not connect ground wire to a water pipe, a gas pipe, or a lightening rod.
 Do not plug too many leads into a single socket.
 The customer must prepare for countermeasures of the power failure.

The dryer may not start normally at the moment of power failure.

 Circuit breaker must be properly selected to meet safety standard of local

regulations.

 Always be sure to connect the protective conductor first, disconnect it last in

respect to the other connections.

 Be sure that the protective conductor has some additional length in respect to

the live conductors, so that it is not subject to mechanical stresses.

 Be sure to install the circuit breaker correctly so that it disconnects all live

conductors and so that the operating handle can be easily accessible.

How to connect wiring

・Take off the front panel in front of the product and connect the power supply (AC230V) to the

terminal base.

・Install a Ground Fault Circuit Interrupter(GFCI) to the power supply. (Prepare by yourself)

[sensitivity of leak current: 30mA and below, Rated current 10A (IDU75E…Rated current 20A) ]

Specification of power cable

Prepare following power cable.

Power cable: 16AWG (1.25mm2), Three-cores (including the ground cable) [IDFB22E/37E], Four-cores
(including the ground cable) [IDFB55E/75E], External diameter: about 0.3inch (8mm) to 0.5inch (12mm).
Additional length of about 4inch (0.1m) is needed to wire inside of the equipment.

Air Dryer

2 Transportation / Installation

2-2Installation

2 - 5

IDX-OM-K021

IDFB Series

Length of the power cable

The maximum length of the power cable should be no more than 98feet (30m).

Connecting to the power supply

Connect the power cable and the ground to the terminal block.

Wiring procedure

1. Remove the terminal block cover or the front panel.

2. Insert the cord through the rubber grommet and connect it to the terminal block (refer to the label on the
terminal block).

During wiring work, do not touch other sections except terminal block.

3. Insert the screwdriver into terminal block and open spring of terminal.
(The cable insulator must be stripped at 3/8inch (10mm).)

4. Insert the cable and remove the screwdriver.

5. Re-attach the cover or real panel after wiring is done.

IDFB22E, 37E

IDFB55E, 75E

Ｌ　　　Ｎ　　 PE

Cable entry

Screwdriver entry

Terminal block

118 to 138 mil
（3 to 3.5mm）

Applicable screwdriver

118 to 138 mil
（3 to 3.5mm）

Applicable screwdriver

L1 L2 L3

Earth terminal block
Screw = M4×10

Earth cable connection

Cable entry

Screwdriver entry

Terminal block

Air Dryer

2 Transportation / Installation

2-3Cautions for Reinstallation

2 - 6

IDX-OM-K021

IDFB Series

2-3 Cautions for 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.
 Open the auto drain residual pressure release valve to release air pressure inside the product. Refer to the

Figure at right.

Case Assembly

The ramainder depressure cock.
※It opens when turning in the
drection og the arrow of figure.

Air Dryer 3 Operation / Shutdown

3-1Check points before operation

3 - 1

IDX-OM-K021

3 Operation / Shutdown

Caution

Only properly trained and qualified personnel are allowed to perform operation/shutdown
of the equipment.

3-1 Check points before operation

Before trial run, check the following points:

 Installed Conditions:

By visual inspection check that the equipment is level.
Make sure the equipment is tied down with anchor bolts.
Do not place heavy objects on the top of the equipment. Make sure piping does not add weight to
the equipment.

 Power cord, and the ground should be connected firmly.
 Drain tube should be connected correctly.
 Make sure the piping for compressed air is connected correctly.
 Make sure the ball valve located next to the auto drain opened.

3-2 Operation

Start operation according to the procedure below.

 Turn on the breaker of the main power supply. Then, turn ON the ON/OFF switch.
 The lamp will light up. Few minutes later, the cooling fan will rotate and hot air will be exhausted from

the ventilation grille.
Location of the ventilation grille: Right Side

 Open the IN/Out side valve slowly. Make sure the bypass valve is completely closed. Confirm there

are no air leaks.

 Depending on the condition of compressed air or ambient temperature, the cooling fan sometimes

alternates between start/stop at the beginning. Then, the refrigerant compressor will start and the
pointer of the evaporating temperature will indicate in the green zone. If the pointer indicates higher
than the green zone, refer to “Chapter 5 Troubleshooting.”

 After running for a while, moisture will be discharging from the drain tube automatically.

Caution

・Avoid frequent On/Off operation, which may cause problems.
・The auto drain used for the equipment has a structure that closes the valve with air

pressure higher than 22psi（0.15MPa）.
Therefore, until the pressure increase, air will be emitted form the drain outlet at the
begining of opening the IN side valve. Keep in mind that sometime the pressure cannot
increase enough with air compressor that has low dischage flow rate.
・Avoid using this product under the condition which has sudden pressure/flow rate
changes. Otherwise, drain (condensed water) may flow out to the secondary piping.

IDFB Series

Air Dryer 3 Operation / Shutdown

3-3Shutdown

3 - 2

IDX-OM-K021

3-3 Shutdown

① Turn off the ON/OFF switch.
② The lamp will go out and then, the operation will stop. Depending on the condition of operation, hot air

continues to be emitted from the ventilation grille by the cooling fan for a while after turning off the switch.

3-4 Cautions about restart

・Wait at least 3 minutes before restarting the air dryer after it has been shut down. Failure to do this may

cause safety devices to trip due to over load. If it is not possible to restart, refer to “Chapter 5
Troubleshooting.”

3-5 Check points before restart

Check following points before you start operation. If any abnormalities occur, immediately stop the operation.
Turn off the ON/OFF switch follow by the breaker of the main power supply.

 There are no air leaks.
 Air pressure, temperature, flow rate, and ambient temperature meet the specifications.
 Moisture is being discharged from the drain tube.
 The pointer of evaporating temperature indicates in the green zone.
 Drainage should not be exhausted from the outlet of the air dryer.
 There are no abnormal sound, vibration, or odor.

3-6 Precautions for long-term non-operation

 If the product will not be operated for more than 24 hours, for example at the weekend, turn off the

ILS (Switch with lamp) or power supply, for energy saving and safety. It is also recommended to
release the pressure and residual drainage inside the compressed air piping and this air dryer.

 The residual drainage in the air dryer may splash over the outlet when the operation is re-started, so

it is recommended to install a filter on the outlet of the air dryer.

IDFB Series

Air Dryer

4 Maintenance

4-1Daily Inspection

4 - 1

IDX-OM-K021

4 Maintenance

4-1 Daily Inspection

Check following points during normal operations. If you find some problems, immediately stop the dryer and
refer to “Chapter 5 Troubleshooting” as soon as possible.

 There is no air leaks.
 The running lamp is on during operation
 Moisture is being discharged from drain tube
 The pointer of the evaporating temperature indicates in the green zone
 The pointer of the evaporating temperature indicates about 41 to 59°F (5 to15

o

C) lower than that of the

ambient temperature when compressed air stops supplying to the air dryer.

 There is no abnormal odor or smoke coming from the equipment.
 It is recommended to keep a maintenance/service record. Please refer to “Chapter 12-1 Service Record”

4-2 Periodical Maintenance

4-2-1 Cleaning of ventilation grille (suction grille)

Clean dust and other foreign particles from the ventilation area with vacuum cleaner or air blow nozzle once a month.

Caution

During air blowing, put on protective glass and mask to prevent dusts from coming into
throat or eyes.

4-2-2 Service parts

It is recommended to replace the following parts regularly. The interval shown in this operation manual

depend on the operating conditions (ambient temperature, installation environment, etc.), so that they
are for reference .

 Table 1. List of parts to be replaced regularly

*Note）If it is mounted by option ”T” (With terminal block for power supply , run , alarm signal and remote

operation) or special order.

4-2-3 Cleaning of the case assembly

Remove the dust deposited in the auto drain case assembly every month. Use neutral detergent for cleaning. If the
degree of dirt is heavy and operating failure still continues even after cleaning, replace the product. Also, shorten
cleaning interval from the next time.

 Part No. of case assembly

Parts No.

Description

IDFB22E

IDFB37E

IDFB55E

IDFB75E

AD48N-Z (Thread Symbol : N)

Auto Drain

1 1 1

1

AD48 (Thread Symbol : None)

Auto Drain

1 1 1

1

Description

Recommended replacement interval

Pressure switch

One Million times.

Fan motor

20,000 hours

Magnetic Contactor, Magnetic Switch (Note)

One Million times.

IDFB Series

Air Dryer

4 Maintenance

4-2Periodical Maintenance

4 - 2

IDX-OM-K021

・ Maintenance of the air dryer should only be carried out by someone with sufficient knowledge and

experience of air dryers and related equipment.

・ Before carrying out maintenance, the important warnings in this manual must be thoroughly read and

understood.

・ When replacing or cleaning parts of the air dryer, be sure to remove the compressed air pressure inside

the air dryer to “0”. Never remove the case assembly when the air dryer is operated or air pressure
remains inside. It is extremely dangerous if compressed air pressure remains inside the air dryer, as
parts may come flying off at speed when loosened, or other unexpected accidents.

・ This product has parts that become hot during operation and a power supply with high voltage applied.

There is a risk of burns due to heat or electrification by high voltage. Even when operation is shut down
after switching off the air dryer’s illuminated light, there are also charging lines. When working on the
charged sections, be sure to switch off the earth leakage breaker installed before starting work.

・ As some parts of the air dryer will remain hot, there is a risk of burns due to residual heat after the

power is switched off. So do not carry out replacement work until the temperature of these parts has
fallen to 50℃ or less. Wait for about 10 to 15 minutes as a guide.

・ When carrying out maintenance work on the auto drain strainer and auto drain, there is a risk of

touching the drain fluid during work. Please follow the safety procedure for operators specified by
customer.（Example: carry out work wearing safety glasses, apron and gloves to prevent discharged
fluid from touching the human body.）

・ Use neutral detergent solution to clean parts such as the auto drain strainer and auto drain. Never

use solvent such as thinner.

・ When removing the outer casing panel or case assembly of the auto drain, wear gloves to prevent

injuries.

How to clean and replace the case assembly.

When carrying out maintenance work on the auto drain and auto drain strainer, please
follow the steps below.

・Turn off the illuminated ON/OFF switch.
・ Disconnect the earth leakage breaker at the power supply or unplug the power plug from the socket.
・ Fully close the IN/OUT valves. Only open the bypass when compressed air is required during work.
・Only the point that is necessary for work please remove a decoration panel.

Warning

Danger

IDFB Series

Air Dryer

4 Maintenance

4-2Periodical Maintenance

4 - 3

IDX-OM-K021

・ Close the ball valve.
・ Open the bleed valve by turning it anticlockwise to release

air left in the product.

・ Remove the drain tube from the case assembly.

・ Hold the case assembly lightly and pull down the lock button with

thumb. Then, turn the case assembly to the left (or right) to 45°to
align the marks,
Release your thumb from the lock button and slowly pull down the
case assembly (vertically) to remove it.

・ Pour solution of neutral detergent into the case assembly and

shake it well to clean.

・ Check the case O-ring for damage such as scratches, twisting

or foreign particles attached to it. Then, apply grease thinly
and fit it in the groove in the case assembly.

・ Fit the case assembly to the auto drain body. Turn it untill the lock

button clicks.

・ Try to turn the case assembly lightly and check that it does not

turn. If it turns, start with fitting the case assembly to the body
again.

・ Try to turn the case assembly lightly and check that it does not

turn. If it turns, start with fitting the case assembly to the body
again.

・ Close the bleed valve by turning it clockwise and fit the

drain tube as it was.

・ Open the ball valve.

・ If the case assembly is damaged or very dirty, replace it

with a new one.

S

O

Drain tube
release bush

Lock button

Drrain tube

Ball valve

Bleed valve

Ball valve

Float assembly

Turn to 45°

（right or left)

Auto drain strainer

Bleed valve

Pull down the case
assembly slowly

IDFB Series

Air Dryer 5 Troubleshooting

5-1Cause and countermeasure of errors

5 - 1

IDX-OM-K021

IDFB Series

5 Troubleshooting

5-1 Cause and countermeasure of errors

Should any problem occur, inspect the following table, and if the problem cannot be solved, shut off the power
supply and then contact one of our sales offices for further instructions.

Problem

Probable Causes

Remedy

Although the
switch with lamp
is turned on, the
lamp does not
light up and the
product does not
start operating.

The power supply cable has been
loosened or disconnected.

-Perform proper connection on the power cord and

plug.

The ground fault circuit
interrupter is not turned on.

Check the capacity of the ground fault circuit
interrupter.

- Check the product was not restarted within 3 minutes

after being stopped.

- Turn on the ground fault circuit interrupter and try to

operate.

If the ground fault circuit interrupter turns back off,
the insulation failure of the product is suspected. Turn
off the power supply and contact SMC.

Power line connection is wrong.
(Phase Reversal Relay switch
can’t be ON.)

-Connect the power line correctly.

Running lamp
extinguishes and
compressor stops
during operation
but
resumes normal
operation
Switch with lamp
after a
period of time.

The product is installed in an
inappropriate location.
Ambient temperature is excessive.

- Improve ventilation condition and reduce the ambient

temperature as much as possible.

-Reset the protective circuit by referring to “5-2 How

to reset the thermal relay and high pressure
switch.” (Only IDFB55E,75E)

The ventilation port is obstructed by a
wall or clogged with dust.

- Keep the product 600mm or more away from the

surrounding walls.

- Clean the ventilation ports once every month.

-Reset the protective circuit by referring to “5-2 How

to reset the thermal relay and high pressure switch.”
(Only IDFB55E,75E)

The compressed air temperature is
too high.

- Improve the ventilation in the location where the air

compressor is installed, or decrease the ambient
temperature to allow the discharge air temperature of
the air compressor to go down.

- Install an aftercooler after the air compressor to reduce

the temperature.

-Reset the protective circuit by referring to “5-2 How

to reset the thermal relay and high pressure
switch.” (Only IDFB55E,75E)

The fluctuation of the power supply
voltage is too large.

- Install a power supply transformer or use a different

power supply to provide appropriate voltage.

- The fluctuation of the power supply voltage should be

kept within +/-10% of the rated voltage.

-Reset the protective circuit by referring to “5-2 How

to reset the thermal relay and high pressure
switch.” (Only IDFB55E,75E)

Air Dryer 5 Troubleshooting

5-1Cause and countermeasure of errors

5 - 2

IDX-OM-K021

IDFB Series

Problem

Probable Causes

Remedy

The evaporation
thermometer is
over the green
area without hot
air coming from
the ventilation
port (exhaust
port).
(The compressor
for refrigeration
has stopped with
the lamp lit up.

The product is installed in an
inappropriate location.
Ambient temperature is excessive.

- Improve ventilation condition and reduce the ambient

temperature as much as possible.

The ventilation port is obstructed by a
wall or clogged with dust.

- Keep the product 600mm or more away from the

surrounding walls.

- Clean the ventilation ports once every month.

The compressed air temperature is
excessive.

- Improve the ventilation in the location where the air

compressor is installed, or decrease the ambient
temperature to allow the discharge air temperature of
the air compressor to go down.

- Install an aftercooler after the air compressor to reduce

the temperature.

The fluctuation of the power supply
voltage is too large.

- Install a power supply transformer or use a different

power supply to provide appropriate voltage.

- The fluctuation of the power supply voltage should be

kept within +/-10% of the rated voltage.

The built-in overload relay of the
compressor for refrigeration has
started.

- Check the product was not restarted within 3 minutes

after being stopped.

The evaporation
thermometer is
over the green
area with hot air
coming from the
ventilation port
(exhaust port).

The product is installed in an
inappropriate location.
Ambient temperature is excessive.

- Improve ventilation condition and reduce the ambient

temperature as much as possible.

The ventilation port is obstructed by a
wall or clogged with dust.

- Keep the product 600mm or more away from the

surrounding walls.

- Cl ean the ventilation ports once every month.

The compressed air temperature is
excessive.

- Improve the ventilation in the location where the air

compressor is installed, or decrease the ambient
temperature to allow the discharge air temperature of
the air compressor to go down.

- Install an aftercooler after the air compressor to reduce

the temperature.

Moisture is
generated at the
downstream of
the compressed air
line.

The bypass valve is open.

- Be sure to fully close the bypass valve.

Condensate is not drained from the
auto drain.

- Check the draining piping is not used in an upward

direction nor bent.

- Check the auto drain.

- Check the auto drain strainer.

The pressure fluctuation (pulsation)
of the compressed air is too high.

-Install an air tank on the primary side of the dryer.

-Avoid intermittent compressed air flow.

Residual drainage in the air dryer
splashes over when the unit is
re-started.

-Install a filter on the outlet of the air dryer.

- Blow the unit by air to eliminate the residual drainage

after stopping or re-starting the operation.

The piping of a different system
without an air dryer joins the piping
after the product.

- Install another air dryer (this product) in that system.

- Keep the two systems separate.

The compressed
air pressure is
too large.

The valves at the inlet and outlet of
the piping of the product are not fully
opened.

- Be sure to fully open the valves at the inlet and outlet of

the product.

The air filter, etc. installed in the
compressed air piping has got
clogged.

- Replace the element of the air filter.

(Follow the Operation Manual of the equipment.)

Air Dryer 5 Troubleshooting

5-2How to reset the thermal relay and high pressure switch (Only IDFB55E, 75E)

5 - 3

IDX-OM-K021

IDFB Series

＋＋

＋

＋

5-2 How to reset the thermal relay and high pressure switch (Only IDFB55E, 75E)

If light goes off during operation and refrigerating compressor stops, the thermal relay or high pressure switch
(for only the IDFB55E and IDFB75E) to protect the refrigerating compressor starts operating and needs to be
reset manually. For the position of the thermal relay and high pressure switch, refer to page 1-2.
Before resetting the thermal relay and high pressure switch identify and cure problem that caused the unit to trip

out, by referring to “5-1 Cause and countermeasure for errors”.

Danger

Be sure to turn off the ON/OFF switch.

How to reset a thermal relay

①Turn off the ON/OFF switch.
②Take off the front panel. You can see the electric parts bracket.

The thermal relay can be found left side and upper side in the electric parts bracket.
③Confirm that a green indication does not appear in the
indication window of thermal relay.

If the green indication appears, there are other possible causes

and contact an SMC Authorized Dealer keeping the power supply on.
④Press the blue reset button and confirm that the green indication

comes to appear at the indication window.

⑤Put back the front panel.
⑥When the ON/OFF switch is turned on, the product will restart

operation.

How to reset a high pressure switch

①Turn off the ON/OFF switch.
②Take off the front panel. You can see the electric parts bracket.

The high pressure switch can be found at right side of electric parts bracket.

③Press the red reset button.
④Put back the front panel.
⑤When the ON/OFF switch is turned on, the product will

restart operation.

Thermal relay

High pressure switch

High pressure
switch bracket

Reset button
(Red)

Indication
window

Reset
button (Blue)

Electric parts bracket

Thermal relay

High pressure switch

Air Dryer 6 References

6-1Specifications

6 - 1

IDX-OM-K021

6 References

6-1 Specifications

Model

Specification

IDFB22E-11□ IDFB22E-23□ IDFB37E-23□ IDFB55E-46□ IDFB75E-46□

Air  FlowRate

(ANR)(Note 1)

At Expected Outlet
Press.Dew Point of 37°F（2.8℃)

107SCFM

(182 m

3

/h)

161SCFM

(273 m3/h)

226SCFM

(384 m3/h)

300SCFM

(510 m3/h)

At Expected Outlet
Press.Dew Point of 45°F (7.2℃)

120SCFM

(205 m

3

/h)

173SCFM

(294 m3/h)

258SCFM

(438 m3/h)

353SCFM

(600 m3/h)

At Expected Outlet
Press.Dew Point of 50°F (10℃)

130SCFM

(221 m

3

/h)

181SCFM

(308 m3/h)

297SCFM

(504 m3/h)

406SCFM

(690 m3/h)

Rated

Condition

Operating Pressure

100psig (0.7MPa)

Inlet Air Tem perature

100°F (37.8℃)

Ambient Temperature

100°F (37.8℃)

Voltage

115V 60Hz 230V 60Hz 460V 60Hz

Operating

Range

Working Fluid Compressed Air
Inlet Air Tem perature

40-122°F (5-50℃）

MIN.Inlet Air Pressure

22psig （0.15MPa）

MAX.Inlet Air Pressure

150psig （1.0MPa）

Ambient Temperature

36-104°F (2〜40℃) Relative Humidity of 85% or less

Electrical

Specification

Power Source

1φ AC115V±

10% 60Hz

(Note4)

1φ AC230V±10% 60 Hz ( Note4) 3φ AC460V±10% 60Hz (Note4)

Starting Current and LRA (Note2) 42A 26A 30A 27A
Operating Current (Note2) 9A 4.5A 5.6A 3.8A
Power Consumption (Note2) 1000W 1270W 2400W

Circuit Breaker Capacity (Note3) 15A 10A
Condenser forced air cooling
Refrigerant R134a(HFC) R407C(HFC)

Refrigerant Charge Quantity

18.7±0.4oz
(530±10g)

25.7±0.4oz
(730±10g)

15.2±0.4oz
(430±10g)

20.8±0.4oz
(590±10g)

Thread Type
and Size

Thread Symbol “N”
(male)

NPT1 NPT1-1/2 NPT2

Thread Symbol “None”
(male)

R1 R1-1/2 R2

Drain Tube

Thread Symbol “N” 3/8inch
Thread Symbol “None”

10mm
Painting Finish baking finish
Colour Panel : Urbanwhite1

Weight 

119lbs
(54kg)

137lbs
(62kg)

258lbs

(117kg)

271lbs

(123kg)

Note1: The data for SCFM (ANR) is referring to the conditions of 68°F (20°C), 1atm . pressure & relative

humidity of 65%.
Note 2: The value is that of under specified condition.
Note 3: Install GFCI breaker with sensivity of

30mA.

Note 4: When short period power shortage (including instantly recovered shortage) is recovered, it may take

a longer starting period than usual starting or may not start due to the protective devices.

IDFB Series

Air Dryer 6 References

6-2Refrigerant with GWP reference

6 - 2

IDX-OM-K021

6-2 Refrigerant with GWP reference

Note:

1. This product is hermetically sealed and contains fluorinated greenhouse gases.

2. See specification table for refrigerant used in the product.

6-3 Dimensions

・IDFB22E / 37E

[4xDIA.13]

4xDIA.0.5

AIR OUTLET AIR INLET

9～11])OPPOSITION

φ

0.4[

φ

（WIRE

ELECTRICAL ENTRY

VENTILATION VENTILATION

DRAIN TUBE

BALL VALVE

　LENGTH：35.4[900])

(O.D.3/8

WITH LAMP

SWITCH

THERMOMETER

EVAPORATION

BLOCK

TERMINAL

F

C

J

N M

E D

B

H

AUTO DRAIN

L
P

K

A

G

PORT SIZE

PORT SIZE

UNIT : inch [mm]

ABCDEFGHJK L M N P

30.5

[775]

33.7

[855]

13.4

[340]

26.8

[680]

IDFB37E 1/2

Model

Port
Size

Dimensions (inch [mm] )

IDFB22E 1

11.4

[290]

24.5

[623]

5.3

[134]

15.9

[405]

27.5

[698]

1

[25]

3.7

[93]

1.8

[46]

23.6

[600]

3.3

[85]

12.4

[314]

0.5

[13]

IDFB Series

Air Dryer 6 References

6-3Dimensions

6 - 3

IDX-OM-K021

・IDFB55E / 75E

N M

KL

P

C

F

DE

B

G H

Q

J

R

A

[DIA.9～11])

(WIRE DIA.0.4

ENTRY HOLE

POWER CORD

BLOCK

TERMINAL

(SIZE OF RECOMMENDED BOLT：M10)

AUTO DRAIN

DRAIN TUBE

BALL VALVE

　LENGTH：39.4[1000]

VENTILATION

VENTILATION

THERMOMETER

EVAPORATION

WITH LAMP

SWITCH

DRAFT AIR OUTLET

AIR INLETAIR OUTLET

[4XDIA.13]

4XDIA.0.5

PORT SIZE PORT SIZE

UNIT : inch [mm]

ABCDEFGHJK L M N P

Q

R

Model

Port

Size

Dimensions (inch [mm] )

IDFB55E 2

1.4

[36]

IDFB75E 2

18.5

[470]

5.0

[128]

17.9

[455]

4.3

[110]

9.8

[250]2[50]

0.5

[13]

20.4±0.2
[519±5]

33.7

[855]

31.5

[800]

35.4

[900]

34.2

[868]

38.1

[968]

27.6±0.04
[700±1]

19.7±0.1
[500±2]

3.0

[75]

20.7

[526]

IDFB Series

Air Dryer 6 References

6-4Electrical Circuit

6 - 4

IDX-OM-K021

6-4 Electrical Circuit

GFCI

For Option R

N※2PE

L

※1

TB1

C1

MC

※2※1

ＯＬＲ

Power Cable
with Plug

CM

Terminal Block
for Option S

CN

MC

CN

Ｐ

PRS

For Option V

※1

ILS

※2

For Option R

ＯＬＲ

CN

PRS

Ｐ

ILS

TB1

MC

L

NPE

GFCI

For Option V

CN

C1

MC

CM

PE

PE

PRR

W

1

W

2

T

H

R

PRS1

MC1

P

MC2

P

EDV

PE

P

R

S

2

PRR

C01

THR

MC1

MC2

FM

CM

T

TB

記号 名称

ＣＭ Refrigerating Compressor

FM Fan Motor

FM1～6 Fan Motor

OLR Overload Relay

C1 Capacitor For Compressor Motor

C01 Capacitor For CM

ILS Switch with Lamp

PRS Pressure Switch
PRS1 Pressure Switch
PRS2 High Pressure Switch

TB Terminal Block
TB1 Terminal Block
TB2 Terminal Block

MC Magnetic Contactor

MC1 Magnetic Contactor
MC2 Magnetic Contactor

Ｔ Transformer
THR Thermal Relay
PRR Phase Reversal Relay

GFCI Ground Fault Circuit Interrupter

EDV Electronic Drain Valve

PC Power Cable

・

IDFB22E/37E-23

・

IDFB22E -11

IDFB Series

ForIDFB37

E

・

IDFB55E/75E-46

Air Dryer 6 References

6-5Compressed Air and Refrigerant Circuit/Operation Principles

6 - 5

IDX-OM-K021

6-5 Compressed Air and Refrigerant Circuit/Operation Principles

IDFB22E / 37E / 55E / 75E

Compressed Air Circuit

Humid hot air entering air dryer is cooled in the cooler. At this time , the condensate is separated from the air by the
drain separator and automatically discharged. The dry air is heated by the re-heater until it gets about the same
temperature as that of ambient air. It is then discharged from air dryer outlet.

Refrigerant Circuit

The Fluorocarbon charged in the refrigerant circuit is compressed by the compressor and cooled by the condenser
to become liquid. Then, going through the capillary tube, the refrigerant pressure and temperature (evaporating
temperature) decreased rapidly. Passing through the cooler part, it draws heat from the hot compressed air and
intensely boils. Finally, it is sucked into the compressor again. The hot gas bypass valve opens to prevent
compressor from freezing when compressed air is too cold.

IDFB Series

IDX-OM-K021

Air Dryer 7 Specification for Option A

7-1 Safety instructions

7- 1

IDFB Series

7

Specification for Option A

7-1 Safety instructions

When handling the product, take care to the following precautions.

Warning

Shut off the power supply when removing the panel for maintenance work, etc. The product
has a fan(s) and could cause serious danger to operators.

7-2 Specifications

Cool outlet air (50oF(10oC)) can be supplied. The air flow with this option is smaller than that of the

standard dryer.

7-3 Air piping

Since cool air comes out from an outlet of air dryers, carefully attach thermal insulation to the piping at air
outlet and keep the piping length as short as possible in order to prevent condensation on the outlet piping
and temperature increase on the outlet due to ambient temperature.

7-4 Air flow capacity

Note1) The data for ANR is referring to the conditions of 68F(20℃), 1atm. pressure & relative
humidity of 65%.
Note2) The conditions are the same as the ones for standard models other than air flow capacity.

Model

IDFB22E

IDFB37E

IDFB55E

IDFB75E

Air flow capacity (ANR)

Note1)

60Hz

47SCFM

(80m³/h)

80SCFM

(136m³/h)

103SCFM

(176m³/h)

150SCFM

(205m³/h)

Outlet air temp.

50°F(10℃)

IDX-OM-K021

Air Dryer 7 Specification for Option A

7-5 Compressed Air and Refrigerant Circuit / Operation Principles

7- 2

IDFB Series

7-5 Compressed Air and Refrigerant Circuit / Operation Principles

Capillary Tube

Condenser

Cooler

Drain Outlet

Compressed Air Inlet

Auto Drain

Thermoreter

Accmulator

Compressor

Fan Motor

Ball Valve

High Pressure Switch

Capacity Control Valve

Compressed Air Outlet

Pressure Switch

Compressed Air Circuit

The heat of humid hot air entering to the air drier enters to the cooler and is cooled and
dehumidified by cold fleon, separating the moisture.
The cold air is released from the air dryer.

Refrigerant Circuit

The Fluorocarbon charged in the refrigerant circuit is compressed by the compressor and
cooled by the condenser to become liquid. Then, going through the capillary tube, it is
decreased the pressure to reach a low temperature. Passing through the cooler part, it
draws heat from compressed air and intensely boils. Finally it is inhaled into the
compressor again. The capacity control valve opens to prevent dew drops from freezing
when compressed air is cooled enough.

Except IDFB75E

Air Dryer

8 Specification for Option K

8-1Safety instructions

8 - 1

This product mounts the auto drain in Item 2 Specifications. When performing the installation and
maintenance of the product, the following points must be understood and followed. Additionally, for
replacement work, read 4-2 “Periodical Maintenance” of the Operation Manual of standard product and
keep safety.

8-1 Safety instructions

When handling the product, take care to the following precautions.

8-2 Specifications

The auto drain has a maximum operating pressure of 1.6MPa and uses the metal case with a fluid
level indicator.

Warning

1. Do not remove the auto drain if air pressure remains of the product. When removing the
auto drain, stop the supply of air to the primary side of the product, exhaust the air from the
secondary side and ensure there is no residual pressure. If the air pressure is left at the
inside of the product, parts could suddenly pop out and cause accident when loosened.

2. Put gloves to prevent injury when removing the auto drain.

3. Operator could touch the drain waste from repalced auto drain. Follow the procedures
prepared by the customer to keep safety of operators. (Ex. Put protective goggles, apron
and/or gloves to protect body from toucing the drain waste for replacement worken
replacing the product.)

Model

Item

Thread Symbol “N”

Thread Symbol “None”

Auto drain

AD48-8Z-X2110

AD48-8-X2110

Max. operating pressure

240psig (1.6MPa)

Auto drain type

Float type

Auto drain valve type

N. O. （Normal Open: Open under non-energized status. ）

Operating pressure

15 to 240psig (0.1 to 1.6MPa)

Operating fluid

Compressed air

IDFB22E, 37E

KQ2H11-02S(Thread Symbol “N”)

3/8(Thread Symbol “N”)

AD48-8-X2110(Thread Symbol “None”)

KQ2H10-02S(Thread Symbol “None”)

AD48-8Z-X2110(Thread Symbol “N”)

φ10(Thread Symbol “None”)

Level gauge

Drain Port

IDX-OM-K021

IDFB Series

8 Specification for Option K

Air Dryer

9 Specification for Option L

9-1Safety instructions

9 - 1

IDX-OM-K021

9 Specification for Option L

9-1 Safety instructions

When handling the product, take care of the following precautions.

9-2 Specifications

The specification of this product is dryer with heavy duty auto drain.
And, the auto drain has a maximum operating pressure of 240psig (1.6MPa).

Heavy duty auto drain assembly

Warning

1. Do not remove the auto drain if air pressure remains in the product. When removing the
auto drain, stop the supply of air to the primary side of the product, exhaust the air from the
secondary side and ensure there is no residual pressure. If the air pressure is left inside of
the product, parts could suddenly pop out and cause accident when loosened.

2. Put gloves to prevent injury when removing the auto drain.

3. Operator could touch the drain waste from repalced auto drain. Follow the procedures
prepared by the customer to ensure the safety of the operators. (Ex. Put protective goggles,
apron and/or gloves to protect body from toucing the drain waste when performing
maintance on the product.)

Drain tube

Heavy duty auto drain

Ball valve

IDFB Series

Air Dryer

9 Specification for Option L

9-3Specification of heavy duty auto drain (ADH4000-04)

9 - 2

IDX-OM-K021

9-3 Specification of heavy duty auto drain (ADH4000-04)

Note) Use for air compressor with flow more than 1.77SCFM (ANR) [3 m3/h (ANR)].

9-4 Maintenance

1. Check drain condition periodically (more than once a day).
Then push flushing button to open exhaust valve.

2. Pilot air is exhaust from the port indicated in the figure. Do not cover this exhaust port.
Clean exhaust port so that port is not blocked by dust, etc.

3. Close the ball valve before removing the heavy duty auto drain and open the bleed valve or push
the flushing button and confirm air pressure is released.

Model

IDFB55E/75E-46□-L

Order number (service parts)

ADH-E400

Auto drain type

Floating type

Auto drain valve type

N.O(normally opened: Open in the case of pressure loss)

Max. operating pressure

240psig (1.6MPa)

Working pressure range

7.5 to 240psig (0.05 to 1.6MPa)

Working fluid

Compressed air

Max. drain discharge

0.014SCFM(Pressure 0.7MPa,the case of water)

IDFB Series

Flush button

Body

Bleed valve

Pilot exhaust port

open

close

Air Dryer

10 Specification for Option R

10-1Safety instructions

10 - 1

IDX-OM-K021

10 Specification for Option R

This product mounts the Ground Fault Circuit Interrupter (GFCI) in Item 2. It will shut off the power
supply in case the product should have over current or current leakage. Additionally, the power
supply should be connected directly to the primary side of the GFCI. For the details of the GFCI such
as the specifications and mounting position, refer to Item 2 or later.

10-1 Safety instructions

When handling the product, take care to the following precautions.

10-2 Specifications of the GFCI

Dryer model number

Specifications of GFCI

IDFB22E-11□-R

Rated current: 15A, Current sensitivity: 30mA
IDFB22E/37E-23□-R

IDFB55E/75E-46□-R

Rated current: 10A, Current sensitivity: 30mA

10-3 How to connect the power supply

1) Take off the front panel.

2) Take off the GFCI cover. (Only IDFB55E, 75E)

3) Insert the power cable prepared by the customer into the power code fixture and bring the
power cable near the terminal base through the base hole.

4) Connect the power cable to the terminal of the GFCI.

5) Put back the GFCI cover. (Only IDFB55E, 75E)

6) Put back the front panel.

Only qualified person must perform wiring and obserbing the following points.

1. Be sure to shut off the power supply before wiring. For safety, do not perform any work on the unit
with the power supply on. The power supply cannot be completely shut off just by turning off the
illuminated switch. Be sure to turn off all power lines connected to the product.

2. Supply the power from a stable source, free from surges.

3. Provide the power suitable for the product specifications.

4. Be sure to ground the product for the safety. Without grounding, the GFCI can not operate normally.

5. Do not ground to water pipe, gas tube or lightening rod line.

6. Do not connect too many wires to the same outlet, which could results in heat generation and fire.

7. Do not retrofit the wiring of the dryer and the power supply line.

Warning

IDFB Series

Air Dryer

10 Specification for Option R

10-3How to connect the power supply

10 - 2

IDX-OM-K021

L

N

Connect to power cable
Connector width：0.37inch (9.5mm) or less

Connect to earth cable
Connector width：0.26inch (6.5mm) or less

Front panel

GFCI

Electrical
entry

Ｌ　　　Ｎ　　PE

IDFB22E, 37E

IDFB55E, 75E

L1 L2 L3

Connect to power cable
Connector width：0.4inch (10mm) or less

Connect to earth cable
Connector width：0.4inch (10mm) or less

Front panel

GFCI

Electrical
entry

Screw = M4×10

GFCI cover

IDFB Series

Ground fault display button (white)

Ground fault display button (white)

Ground fault display
button (white)

test button (gray)

test button (gray)

Air Dryer

10 Specification for Option R

10-4Cautions for handling the GFCI

10 - 3

IDX-OM-K021

10-4 Cautions for handling the GFCI

1) When the breaker is tripped, cut off the power supply and contact the nearest sales distributor or
SMC sales.

- With the Ground fault display button (white) released → Current leakage

- With the Ground fault display button (white) pressed → Over current

2) Check the operation once a month by pressing the test button (gray) with the breaker on and
Switch with Lamp off.

10-5 Electric circuit

For electric circuit, refer to ’’6-4 Electric circuit’’.
Please refer to ’’12-6 Electric circuit’’ when option T is included.

IDFB Series

Air Dryer

11 Specification for Option S

11-1Safety instructions

11 - 1

Front Panel

You can see the terminal block
when you remove this cover.

Connect the power cable through
the membrane grommet.

Rubber grommet

Power supply cable entry

Terminal block

11 Specification for Option S

11-1 Safety instructions

When handling the product, take care to the following precautions.

11-2 Specifications

The option allows the connection of a power cable to a terminal block.

Only qualified persons are allowed to wire the product.

1. Before wiring, be sure to shut off the power supply. Never perfom wiring work white the product is
energized.

2. Ensure a stable power supply with no voltage surges.

3. Use a power supply suitable for the specifications of the product.

4. Be sure to connect the ground connection.

5. Grounsing should never be connected to a water line , gas line or lightning rod.

6. Multiple wiring is dangerous because it may lead to heat generation and cause a fine.

7. Do not modify the electrical wiring of the power supply.

Warning

Front

Ｌ　　　Ｎ　　PE

To the user’s machine

Front

IDX-OM-K021

IDFB Series

Air Dryer



12 Specification for Option T

12-1Safety instructions

12 - 1

IDX-OM-K021

12 Specification for Option T

This product mounts the terminal block which can transfer the operation and failure signals to Item 2
Specifications. The signals are a no voltage contact style. For details, refer to Item 2 or later.

12-1 Safety instructions

When handling the product, take care to the following precautions.

12-2 Specifications

The product mounts the terminal block which can transfer the operation and failure signals on the
standard product.

・The operation and failure signals are no voltage contact style.

Operation・・・・・When the product is operating; Close
Failure・・・When the product stops due to failure; Close

・Contact capacity

AC200V/2A
DC24V/2A

(Minimum applicable load: 20V / 3mA)

Only qualified person must perform wiring and obserbing the following points.

1. Be sure to shut off the power supply before wiring. For safety, do not perform any work on the unit
with the power supply on. The power supply cannot be completely shut off just by turning off the
illuminated switch. Be sure to turn off all power lines connected to the product.

2. Supply the power from a stable source, free from surges.

3. Be sure to mount the Ground Fault Circuit Interrupter (GFCI) with adequate sensitivity and load

capacity to prevent electrical shock and protect the refrigerating compressor motor from burning
out.

4. Provide the power suitable for the product specifications.

5. Be sure to ground the product for the safety. Without grounding, the GFCI can not operate

normally.

6. Do not ground to water pipe, gas tube or lightening rod line.

7. Do not connect too many wires to the same outlet, which could results in heat generation and fire.

8. Do not retrofit the wiring of the dryer and the power supply line.

9. For the use of the product in Europe, mount the breaker compatible to IEC standard to the power

supply for the product.

Warning

IDFB Series

Air Dryer



12 Specification for Option T

12-3Remote operation

12 - 2

IDX-OM-K021

Terminal block



Grommet

Signal code inlet

Rubber grommet

Power code inlet

12-3 Remote operation

・For the remote operation, turn on and off the power supply side under the condition of the Switch

with Lamp ON.

・Keep 3 min. at minimum after stopping the product to restart even for the remote operation. If the

product is restarted within less than 3 min., protective equipment (overload relay) may activate and
prevent the product from restarting.
Additionally , the frequency to start and stop the operation must be restricted to 5 times per hour (to
prevent breakage of the motor).

12-4 How to connect the power supply and signal cable

Connect the power cable and signal cable in the following procedures.

1) Take off the front panel.

2) Insert the power cable prepared by the customer into the power code inlet (with rubber
grommet) and bring the power cable near the terminal block through the base hole.

3) Connect the power cable to the terminal.

4) Insert the signal cable prepared by the customer into the signal code inlet (with rubber
grommet) and bring the signal cable near the terminal block.

5) Connect the signal cable to the each terminal.

6) Put back the front panel.

Front panel



Ｌ　　　Ｎ　　PE

1　　　2　 　3

Connections for customer

Connector width: 0.25inch (6.5mm) or less
Suitable wire
Power cord: AWG16

(1.25mm2) to AWG14 (2mm2)

Signal cord: AWG16

(1.25 mm2 ) to AWG14(2mm2)

IDFB22E, 37E

IDFB Series

Air Dryer



12 Specification for Option T

12-5How to re-start the operation

12 - 3

IDX-OM-K021

Terminal block



Grommet

Signal code inlet

Rubber grommet

Power code inlet

12-5 How to re-start the operation

The output of the abnormal signal can be stopped by turning of f the switch with light. Remove the cause of

abnormal operation and leave it for 3 minutes or longer after the stopping the operation, and turn on the
switch with light to re-start.

The thermal relay

is still in operation if the output of the abnormal signal is not stopped even after the
switch with light is turned off. Refer to “5-2. How to reset the thermal relay and high pressure switch” in
the operation manual, and reset it.

Note) The high pressure switch can also be in operation for IDFB55E-46 and IDFB75E-46.

IDFB55E, 75E

321

Connections for customer

Another earth cable Connector width: 0.25inch (6.5mm) or less
Earth cable connector width: 0.4inch (10mm) or less
Power cord: AWG16

(1.25mm2) to AWG14 (2mm2)

Signal cord: AWG16

(1.25 mm2 ) to AWG14(2mm2)

Earth cable connection

Screw = M4×10

IDFB Series

Air Dryer



12 Specification for Option T

12-6Electric wiring diagram

12 - 4

IDX-OM-K021

12-6 Electric wiring diagram

CM

3

Failure

TDR

MC

C1

CN

For Option V

GFCI

21

Operation

MC

N

L

ＯＬＲ

PE

For Option R

TB1

CN

Ｐ

MC

PRS

MC

TDR

ILS

TDR

C1

3

MC

21

MC

TDR

TDR

Failure

Operation

CM

CN

CN

Ｐ

For Option V

N

L

TB1

ILS

MC

TDR

PRS

PE

ＯＬＲ

MC

GFCI

For Option R

CM

FM

PE

PE

PRR

PE

3

Failure

TDR

2

MC1

1

THR

Operation

MC1

MC2

GFCI

TB

P

R

S

2

MC2

MC1

MC1

EDV

P

2

1

W

W

P

T

ILS

PRS1

T

H

R

TDR

PRR

C01

TDR

記号 名称

ＣＭ Refrigerating Compressor

FM Fan Motor

FM1～6 Fan Motor

OLR Overload Relay

C1 Capacitor For Compressor Motor

C01 Capacitor For CM

ILS Switch with Lamp

PRS Pressure Switch
PRS1 Pressure Switch
PRS2 High Pressure Switch

TB Terminal Block
TB1 Terminal Block
TB2 Terminal Block

MC Magnetic Contactor
MC1 Magnetic Contactor
MC2 Magnetic Contactor

Ｔ Transformer

THR Thermal Relay
TDR Time Delay Relay
PRR Phase Reversal Relay

GFCI Ground Fault Circuit Interrupter

EDV Electronic Drain Valve

IDFB22E/37E-23 IDFB22E-11

IDFB Series

ForIDFB37E

IDFB55E/75E-46

Air Dryer

13 Specification for Option V

13-1Safety instructions

13 - 1

IDX-OM-K021

13 Specification for Option V

This product mounts the timer operated auto drain in Item 2 Specifications. When performing the
installation and maintenance work for the product, the following points must be understood and
followed. Additionally, read Item 3 for replacement work.

13-1 Safety instructions

When handling the product, take care to the following precautions.

13-2 Specifications

The timer is set to have ON time of 0.5sec and OFF time of 0.5min. at the time of shipment from the

factory. Do not change this timer setting. If it is changed, water could be discharged from the outlet

line of the dryer. Service parts number will change depending on the power supply voltage of the

dryer.

Warning

1. Do not remove the auto drain if air pressure remains of the product. When removing the
auto drain, stop the supply of air to the primary side of the product, exhaust the air from the
secondary side and ensure there is no residual pressure. If the air pressure is left at the
inside of the product, parts could suddenly pop out and cause accident when loosened.

2. Put gloves to prevent injury when removing the auto drain.

3. Operator could touch the drain waste from repalced auto drain. Follow the procedures
prepared by the customer to keep safety of operators. (Ex. Put protective goggles, apron
and/or gloves to protect body from toucing the drain waste for replacement worken
replacing the product.)

Warning

Only qualified person must perform wiring.

1. Provide the power suitable for the product specifications.

2. Be suer to ground the product for the safety. Do not ground to water pipe, gas tube or
lightening rod line.

3. Do not connect too many wires to the same outlet, which could results in heat generation
and fire.

4. Do not retrofit the wiring of the dryer and the power supply line.

IDFB Series

Air Dryer

13 Specification for Option V

13-3How to perform maintenance

13 - 2

IDX-OM-K021

13-3 How to perform maintenance

The product needs to be maintained. Clean it in the following procedure periodically.

1) Close the ball valve.

2) Press the test switch and make the residual pressure zero.

3) Remove the strainer and clean it.

4) Reassemble the strainer and open the ball valve.

13-4 Electric circuit

For electric circuit, refer to ’’6-4 Electric circuit’’.
Please refer to ’’12-6 Electric circuit’’ when option T is included.

Power supply voltage of dryer

AC115V

AC230V

AC460V

Order number (service parts)

IDF-S0199

IDF-S0198

IDF-S0302

Max. operating pressure

240psig (1.6MPa)

Fluid

Drain

Power supply voltage of drain timer

AC115V±10%

(60Hz)

AC230V±10%

(60Hz)

AC230V±10%

(60Hz)

ON time

0.5sec

OFF time

0.5min

ON OFF

ON:SEC OFF:MIN

0.5

2

4

6

8

10

0.5

1

2

3

4

5

Built-in strainer

Ball valve

Test switch

Strainer lid

IDF-S0199 (AC115V)
IDF-S0198 (AC230V)

KQ2L11-04S (Thread Symbol"N")

KQ2L10-04S (Thread Symbol"None")

3/8 (Thread Symbol"N")

φ 10 (Thread Symbol"None")

IDF-S0302 (AC230V)

IDFB Series

Air Dryer

14 Service Record

14-1Service Record

14 - 1

IDX-OM-K021

14 Service Record

14-1 Service Record

It is recommended to keep a maintenance/service record.

Parts No.

Description

Maintenance/Service Work Description

Date

IDFB Series

Akihabara UDX 15F,
4-14-1, Sotokanda, Chiyoda-ku, Tokyo 101-0021, JAPAN
Tel: [phone] Fax: [phone]
URL: http://www.smcworld.com
Specifications are subject to change without prior notice and any obligation the part of the manufacturer.
2017 SMC Corporation All Rights Reserved