SMC Corporation HRS018-A 20 R Series User manual

HRX-OM-W058-B
Operation Manual
Installation･Operation
Original Instructions
Thermo chiller
Air-Cooled refrigerated type
HRS018-A  -20-  -R
HRS030-A  -20-  -R
Keep this manual available whenever necessary
© 2020 SMC CORPORATION All Rights Reserved

To the users
Thank you for purchasing SMC’s Thermo chiller (hereinafter referred to as the “product”).
For safety and long life of the product, be sure to read this operation manual (hereinafter referred to as the
“manual”) and clearly understand the contents.
Be sure to read and follow all instructions noted with “Warning” or “Caution” in this manual.
This manual is intended to explain the installation and operation of the product. Only people who
understand the basic operation of the product through this manual or who perform installation and
operation of or have basic knowledge about industrial machines are allowed to work on the product.
This manual and other documents attached to the product do not constitute a contract, and will not
affect any existing agreements or commitments.
It is strictly prohibited to copy this manual entirely or partially for the use by a third party without prior
permission from SMC.
Note: This manual is subject to possible change without prior notice.

HRX-OM-W058
Contents
HRS-R Series
Contents
Chapter 1 Safety Instructions............................................................1-1
1.1 Before using the product ..........................................................................................1-1
1.2 Reading the Manual...................................................................................................1-1
1.3 Hazards.......................................................................................................................1-2
1.3.1 Level of hazards.................................................................................................................. 1-2
1.3.2 Definition of “Serious injury” and “Minor injury”................................................................... 1-2
1.3.3 Types of hazard labels ........................................................................................................ 1-3
1.3.4 Locations of Hazard Labels................................................................................................. 1-4
1.4 Other Labels...............................................................................................................1-5
1.4.1 Product Label...................................................................................................................... 1-5
1.5 Safety Measures.........................................................................................................1-6
1.5.1 Safety Instructions for Use.................................................................................................. 1-6
1.5.2 Personal Protective Equipment........................................................................................... 1-7
1.6 Emergency Measures................................................................................................1-8
1.7 Waste disposal...........................................................................................................1-9
1.7.1 Disposal of refrigerant and compressor oil.......................................................................... 1-9
1.7.2 Disposal of product.............................................................................................................. 1-9
1.8 Material Safety Data Sheet (MSDS) ..........................................................................1-9
Chapter 2 Name and Function of Parts ............................................2-1
2.1 Part number of product.............................................................................................2-1
2.2 Name and Function of Parts .....................................................................................2-2
2.3 Function of Parts .......................................................................................................2-4
2.4 Operation display panel ............................................................................................2-5
Chapter 3 Transport and Setting Up .................................................3-1
3.1 Transport ....................................................................................................................3-1
3.1.1 Transportation using casters............................................................................................... 3-2
3.2 Installation..................................................................................................................3-3
3.2.1 Environment........................................................................................................................ 3-4
3.2.2 Location (Required ventilation rate).................................................................................... 3-6
3.2.3 Installation and Maintenance Space................................................................................... 3-7
3.3 Installation..................................................................................................................3-8
3.3.1 Mounting.............................................................................................................................. 3-8
3.3.2 Electrical wiring ................................................................................................................... 3-9
3.3.3 Preparation and wiring of power supply cable.................................................................. 3-10
3.3.4 Wiring of remote operation signal input............................................................................. 3-14
3.3.5 Wiring of operation signal output and alarm signal output................................................ 3-17
3.3.6 RS-485 Communication wiring.......................................................................................... 3-18
3.3.7 RS-232C Communication wiring....................................................................................... 3-19
3.4 Piping........................................................................................................................3-20
3.5 Fill of circulating fluid..............................................................................................3-22
3.6 Option J Piping of【Automatic fluid filling】.......................................................3-23

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Contents
HRS-R Series
3.7 Wiring of external switch ........................................................................................3-24
3.7.1 Reading of the External switch..........................................................................................3-25
3.7.2 Wiring.................................................................................................................................3-26
3.7.3 Setting items......................................................................................................................3-27
Chapter 4 Starting the Product.......................................................... 4-1
4.1 Before Starting...........................................................................................................4-1
4.2 Preparation for Start..................................................................................................4-2
4.2.1 Power supply.......................................................................................................................4-2
4.2.2 Setting of circulating fluid temperature................................................................................4-2
4.3 Preparation of circulating fluid.................................................................................4-3
4.4 Starting and Stopping ...............................................................................................4-6
4.4.1 Starting the product .............................................................................................................4-6
4.4.2 Stopping the product............................................................................................................4-7
4.5 Check items after starting.........................................................................................4-8
4.6 Adjustment of Circulating Fluid ...............................................................................4-8
Chapter 5 Display and setting of various functions........................5-1
5.1 List of function...........................................................................................................5-1
5.2 Function......................................................................................................................5-2
5.2.1 Key operations.....................................................................................................................5-2
5.2.2 List of parameters................................................................................................................5-4
5.3 Main screen................................................................................................................5-7
5.3.1 Main screen.........................................................................................................................5-7
5.3.2 Display on the main screen .................................................................................................5-7
5.4 Alarm display menu...................................................................................................5-8
5.4.1 Alarm display menu.............................................................................................................5-8
5.4.2 Content of display of alarm display menu............................................................................5-8
5.5 Inspection monitor menu..........................................................................................5-9
5.5.1 Inspection monitor menu .....................................................................................................5-9
5.5.2 Checking of the Inspection monitor menu...........................................................................5-9
5.6 Key-lock....................................................................................................................5-13
5.6.1 Key-lock.............................................................................................................................5-13
5.6.2 Key-lock setting / checking................................................................................................5-14
5.7 Run timer, stop timer function................................................................................5-15
5.7.1 Run timer and stop timer function......................................................................................5-15
5.7.2 Setting and checking of Run timer and stop timer function...............................................5-17
5.8 Signal for completion of preparation (TEMP READY)..........................................5-19
5.8.1 Signal for completion of preparation (TEMP READY).......................................................5-19
5.8.2 Signal for completion of preparation (TEMP READY) setting / checking..........................5-20
5.9 Offset function .........................................................................................................5-22
5.9.1 Offset function....................................................................................................................5-22
5.9.2 Offset function setting and checking..................................................................................5-24
5.10 Function to recover from power failure.................................................................5-26
5.10.1 Function to recover from power failure..............................................................................5-26

HRX-OM-W058
Contents
HRS-R Series
5.10.2 Function to recover from power failure setting and checking............................................ 5-27
5.11 Anti-freezing function..............................................................................................5-28
5.11.1 Anti-freezing function......................................................................................................... 5-28
5.11.2 Anti-freezing function setting and checking....................................................................... 5-29
5.12 Key click sound setting...........................................................................................5-30
5.12.1 Key click sound setting...................................................................................................... 5-30
5.12.2 Key click sound setting and checking ............................................................................... 5-30
5.13 Temperature unit switching ....................................................................................5-31
5.13.1 Temperature unit switching ............................................................................................... 5-31
5.13.2 Temperature unit switching setting and checking ............................................................. 5-31
5.14 Pressure unit switching ..........................................................................................5-32
5.14.1 Pressure unit switching ..................................................................................................... 5-32
5.14.2 Pressure unit switching setting and checking ................................................................... 5-32
5.15 Alarm buzzer sound setting....................................................................................5-33
5.15.1 Alarm buzzer sound setting............................................................................................... 5-33
5.15.2 Alarm buzzer sound setting and checking ........................................................................ 5-33
5.16 Alarm customize function.......................................................................................5-34
5.16.1 Alarm customize function.................................................................................................. 5-34
5.16.2 Alarm customize function setting and checking................................................................ 5-36
5.16.3 Setting of temperature alarm monitoring method and alarm generation timing................ 5-47
5.17 Data reset function ..................................................................................................5-49
5.17.1 Data reset function............................................................................................................ 5-49
5.17.2 Method of resetting data reset function............................................................................. 5-49
5.18 Accumulated time reset function ...........................................................................5-50
5.18.1 Accumulated time reset function....................................................................................... 5-50
5.18.2 Method of resetting accumulated time reset function ....................................................... 5-50
5.19 Communication function.........................................................................................5-52
5.19.1 Communication function.................................................................................................... 5-52
5.19.2 Communication function setting and checking.................................................................. 5-52
Chapter 6 Option･Optional Accessories ..........................................6-1
6.1 Option B [Earth leakage breaker].............................................................................6-1
6.1.1 Option B [Earth leakage breaker]........................................................................................ 6-1
6.2Option J [Automatic fluid filling] ..............................................................................6-1
6.2.1 Option J [Automatic fluid filling]........................................................................................... 6-1
6.3 Option L [Large capacity tank] .................................................................................6-2
6.3.1 Option L [Large capacity tank]............................................................................................. 6-2
6.4 Option T [High-pressure pump]................................................................................6-3
6.4.1 Option T [High-pressure pump]........................................................................................... 6-3
6.5 Option V [Stainless steel enclosure]........................................................................6-3
6.5.1 Option V [Stainless steel enclosure] ................................................................................... 6-3
Chapter 7 Alarm indication and trouble shooting ...........................7-1
7.1 Alarm Display.............................................................................................................7-1
7.2 Alarm buzzer stop......................................................................................................7-3

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Contents
HRS-R Series
7.3 Troubleshooting.........................................................................................................7-4
7.4 Other Errors................................................................................................................7-6
Chapter 8 Control, Inspection and Cleaning.................................... 8-1
8.1 Control of Circulating Fluid Quality .........................................................................8-1
8.2 Inspection and Cleaning ...........................................................................................8-2
8.2.1 Daily check ..........................................................................................................................8-2
8.2.2 Monthly check......................................................................................................................8-3
8.2.3 Inspection every 3 months...................................................................................................8-4
8.2.4 Inspection every 6 months...................................................................................................8-5
8.2.5 Inspection for winter season................................................................................................8-6
8.3 Consumables .............................................................................................................8-6
8.4 Stop for a Long Time.................................................................................................8-7
8.4.1 Discharge of the circulating fluid..........................................................................................8-7
Chapter 9 Documents......................................................................... 9-1
9.1 Specifications List.....................................................................................................9-1
9.1.1 Product specification............................................................................................................9-1
9.1.2 Refrigerant with GWP reference..........................................................................................9-2
9.1.3 Communication specifications.............................................................................................9-3
9.2 Outline dimensions....................................................................................................9-5
9.3 Flow Chart ..................................................................................................................9-6
9.3.1 HRS018/030-A-20-R..........................................................................................................9-6
9.4 Cooling capacity........................................................................................................9-7
9.4.1 HRS018-A-20--R..............................................................................................................9-7
9.4.2 HRS030-A-20--R..............................................................................................................9-7
9.5 Heating capacity ........................................................................................................9-8
9.5.1 HRS018-A-20-R, HRS030-A-20-R...................................................................................9-8
9.6 Pump capacity............................................................................................................9-9
9.6.1 HRS018-A-20-R, HRS030-A-20-R...................................................................................9-9
9.6.2 HRS018-A-20-T-R, HRS030-A-20-T-R............................................................................9-9
9.7 Compliance...............................................................................................................9-10
9.8 Sample DoC..............................................................................................................9-11
9.9 Daily Check Sheet....................................................................................................9-12
Chapter 10 Product Warranty............................................................10-1

HRX-OM-W058
Chapter 1 Safety Instructions
HRS-R Series 1.1 Before using the product
1-1
Chapter 1 Safety Instructions
1.1 Before using the product
This chapter is intended to specifically describe the safety related issues
for handling the product. Read this before handling the product.
The product is a cooling device using circulating fluid. SMC does not take
any responsibility for any problems that may arise from using the product
for other purposes.
This product is for indoor use only and not to be used outdoors.
This product is not designed for a clean room. It generates dust from the
internal components such as pump and fan motor.
The product is operated at high voltage and contains components which
become hot and rotate. If a component needs to be replaced or repaired,
contact a specialized vendor for parts and service.
All personnel who work with or around the product should read and
understand the safety related information in this manual carefully before
starting work.
The safety manager is responsible for strictly observing safety standards,
but responsibility in respect to safety standards during daily work resides
with each individual operator and maintainance personnel.
Do not use the materials that rust or corrode for the circulating fluid
water circuit. Using the materials that tend to rust or corrode may cause
clogs or/and leakages of the circulating fluid circuit. In case of using these
kind of materials, consider and carry out some prevention against the
rusting or corrosion by the customer side.
This manual must be kept available to operators whenever necessary.
1.2 Reading the Manual
This manual contains symbols to help identify important actions when
installing, operating or maintaining the product.
Before using the product be sure to read and understand all the
important actions highlighted in this manual.
This sign indicates actions that must be followed.
This sign indicates prohibited actions.

HRX-OM-W058
Chapter 1 Safety Instructions
1.3 Hazards HRS-R Series
1-2
1.3 Hazards
1.3.1 Level of hazards
The instructions given in this manual aim to assure the safe and correct
operation of the product, and to prevent injury of operators or damage to the
product. These instructions are grouped into three categories, Danger,
Warning and Caution, which indicate the level of hazard, damage and also
the degree of emergency. All safety critical information should be carefully
observed at all times.
“DANGER”, “WARNING” and “CAUTION” signs are in order according to
severity (DANGER> WARNING> CAUTION).
1.3.2 Definition of “Serious injury” and “Minor injury”
“Serious injury”
This term describes injuries that result in after effects including loss of
eyesight, burns, electrical shock, fracture, poisoning, etc. and requires
long-term treatment or hospitalization.
“Minor injury”
This term describes injuries that do not need long-term treatment or
hospitalization. (Others excluded from serious injury.)
“DANGER”: Hazard that WILL cause serious personal injury or death during
operation.
“WARNING”: Hazard that MAY cause serious personal injury or death during
operation.
“CAUTION”: Hazard that MAY cause minor personal injury.
“CAUTION without exclamation symbol”: Hazard that MAY cause damage or failure
of the product, facility, devices, ect.

HRX-OM-W058
Chapter 1 Safety Instructions
HRS-R Series 1.3 Hazards
1-3
1.3.3 Types of hazard labels
The product has various potential hazards and they are marked with
warning labels. Be sure to read this section before starting any work on the
product.
Warning related to electricity
Warning related to high temperatures
Warning related to rotating objects
Warning related to other general dangers
This symbol stands for a possible risk of electric shock.
The product is operated at high voltage and contains uncovered live
terminals inside.
DO NOT operate the product without cover panels fitted.
DO NOT work inside this product unless you have been trained to
do so.

DO NOT work inside this product unless you have been trained to
do so.

DO NOT work inside this product unless you have been trained to
do so.

DO NOT work inside this product unless you have been trained to
do so.

DO NOT work inside this product unless you have been trained to
do so.

DO NOT work inside this product unless you have been trained to
do so.

DO NOT work inside this product unless you have been trained to
do so.

DO NOT work inside this product unless you have been trained to
do so.

DO NOT work inside this product unless you have been trained to
do so.

DO NOT work inside this product unless you have been trained to
do so.

DO NOT work inside this product unless you have been trained to
do so.

DO NOT work inside this product unless you have been trained to
do so.

DO NOT work inside this product unless you have been trained to
do so.

DO NOT work inside this product unless you have been trained to
do so.

DO NOT work inside this product unless you have been trained to
do so.

DO NOT work inside this product unless you have been trained to
do so.
This symbol stands for general danger.
Hazards Inside
Hot Surfaces Inside –See Hot Surface symbol
Rotating Fan Inside –See Rotating Fan symbol
Pressurized Sytem Inside –The product contains pressurised fluid
systems.
DO NOT operate the product without cover panels fitted.
This symbol stands for a possible risk of hot surface and burns.
The product has surfaces that can reach high temperatures during
operation. Even after the power is turned off, there can still be residual
heat in the product.
DO NOT operate the product without cover panels fitted.
DO NOT start working inside the product until the temperature has
decreased sufficiently.
This symbol stands for a possible risk of cutting fingers or hand, or
entanglement by rotating fan.
The product contains a cooling fan that rotates during operation of the
product.
The fan can start and stop intermittently and without warning.
DO NOT operate the product without cover panels fitted.

HRX-OM-W058
Chapter 1 Safety Instructions
1.3 Hazards HRS-R Series
1-4
1.3.4 Locations of Hazard Labels
There are various warning labels on the product to show the potential
hazards.
Fig. 1-1 Warning label position
Fig. 1-2Warning label position
Rear
Rear

HRX-OM-W058
Chapter 1 Safety Instructions
HRS-R Series 1.4 Other Labels
1-5
Fig. 1-3Warning label position
1.4 Other Labels
1.4.1 Product Label
Information about the product, such as Serial No. and Model No. can be
found on the model label. This information is needed when contacting an
SMC sales distributor.
How to see the manufacturing code XO001 （January 2019）
X
O
001
Year
Symbol
Remarks
Month
Symbol
Remarks
Serial
no.
2019
X
Repeated
from
A to Z in
alphabetical
order
1
O
Repeated from
O to Z in alphabetical
order, with O for
January and Z for
December
－
2020
Y
2
P
2021
Z
3
Q
↓
↓
↓
↓
Fig. 1-4 Position of product label
THERMO CHILLER
HRS030-A-20-R
MADE IN JAPAN
AC200-230V 50/60Hz 1Ph 9.6A
XQ001(MAR.2019)
R410A(HFC) 0.39kg
45kg (Net Weight)
POWER SUPPLY
SERIAL No.
REFRIGERANT
WEIGHT
4-14-1, Sotokanda, Chiyoda-ku,
Tokyo 101-0021, Japan
HRX-OM-W057 HRX-OM-W058MANUAL
(GWP:2088)
G
 (It is an example of model "HRS030-A-20-R".)
Model Number
Serial Number
(SERIAL No.)
The type and quantity
of refrigerant
(REFRIGERANT)
Front

HRX-OM-W058
Chapter 1 Safety Instructions
1.5 Safety Measures HRS-R Series
1-6
1.5 Safety Measures
1.5.1 Safety Instructions for Use
Read and understand this manual carefully before using the product.
Before starting maintenance of the product, be sure to lock out and tag out the
breaker of the user's power supply.
If operating the product during maintenance, be sure to inform all workers nearby.
Use only the correct tools and procedure when installing or maintaning the product.
Use personal protective equipment where specified (“1.5.2 Personal Protective
Equipment”)
Check all parts and screws are fitted correctly and securely after maintenance.
Avoid working in a drunken or sick condition, which might cause an accident.
Do not remove the panels except for the cases permitted in this manual.
Do not remove the panels during operation.
Follow the instructions below when using the product. Failure to
follow the instructions may cause an accident and injury.

HRX-OM-W058
Chapter 1 Safety Instructions
HRS-R Series 1.5 Safety Measures
1-7
1.5.2 Personal Protective Equipment
This manual specifies personal protective equipment for each work.
Transport, Installing and Uninstalling
Handling of circulating fluid
Operation
Always use safety shoes, gloves and head protection when
transporting, installing or uninstalling the product.
Always use safety shoes, gloves, mask, apron and eye protection
when handling the circulating fluid.
Always use safety shoes and gloves when operating the product.

HRX-OM-W058
Chapter 1 Safety Instructions
1.6 Emergency Measures HRS-R Series
1-8
1.6 Emergency Measures
When emergency conditions such as natural disaster, fire and earthquake,
or injury occurs, turn off the breaker of the user’s power supply.
1. Be sure to shut off the breaker of the facility power supply (the power supply of the user’s
machine).
Fig. 1-5 Shut off of facility power supply
The internal circuits are still energized, unless the user’s power supply
is shut off. Be sure to shut off the breaker of the user’s power supply.

HRX-OM-W058
Chapter 1 Safety Instructions
HRS-R Series 1.7 Waste disposal
1-9
1.7 Waste disposal
1.7.1 Disposal of refrigerant and compressor oil
The product uses hydrofluorocarbon type refrigerant (HFC) and compressor
oil. Comply with the laws and regulations in each country for the disposal of
refrigerant and compressor oil. The type and quantity of refrigerant is
described on the 1.4.1 Product Label.
If these fluids need to be recovered, read and understand the instructions
below carefully. If there is any unclear point, contact an SMC's sales
distributor.
1.7.2 Disposal of product
The disposal of the product must be handled by a specialized industrial
waste disposal agency in accordance with local laws and regulations.
1.8 Material Safety Data Sheet (MSDS)
If the material safety data sheets of chemicals used in this product are
needed, contact an SMC's sales distributor.
Any chemicals used by the user must be accompanied by an MSDS.
Comply with the laws and regulations in each country for the
disposal of refrigerant and compressor oil.
The release of refrigerant in to the atmosphere is banned by law.
Recover it with specific equipment and dispose of it correctly.
Only people who have sufficient knowledge and experience about
the product and its accessories are allowed to recover the
refrigerant and compressor oil.
Only maintenance personnel or qualified people are allowed to
open the cover panels of the product.
Do not mix the compressor oil with domestic waste for disposal.
Also, the disposal of the waste must only be conducted by specific
facilities that are permitted for that purpose.

HRX-OM-W058
Chapter 1 Safety Instructions
1.8 Material Safety Data Sheet (MSDS) HRS-R Series
1-10

HRX-OM-W058
Chapter 2 Name and Function of Parts
HRS-R Series 2.1 Part number of product
2-1
Chapter 2 Name and Function of Parts
2.1 Part number of product
The product can be ordered with the part number configured as shown
below.
The product needs to be handled in different ways depending on the part
number. Refer to “1.4.1 Product Label” and check the part number of the
product.
Fig. 2-1 Part number of product
HRS 018 - A - 20 - - R
Coolingcapacity
Coolingmethod
Powersupply
Option
Environmentallyresistant
Pipingthreadtype
018 1700/1900W(50/60Hz)
030 2500/2900W(50/60Hz)
A Air-cooled refrigerated type
Null Rc
F G (Rc-G conversion fitting included)
N
NPT(Rc-NPTconversion fitting
included)
20 1 phase AC200-230V(50/60Hz)
Null None
B Earth leakage breaker
J Automatic water filling
L Large capacity tank
T High pressure pump
V Stainless steel enclosure
W Fixed SI unit

HRX-OM-W058
Chapter 2 Name and Function of Parts
2.2 Name and Function of Parts HRS-R Series
2-2
2.2 Name and Function of Parts
Fig. 2-2 Names of each part
Option T
【High-pressure pump】
Rear cover
Power supply cable
entry
Breaker handle
Drain port Rc 1/4
Option B
【Earth leakage breaker】
Signal cable entry
Signal cable entry
Option J
【Automatic fluid filling】
Rc3/4
Overflow port
Rc3/8
Automatic fluid filling port
When the option B is selected
Power supply cable and Signal cable connection
（Behind the rear cover）
Option connector 2
Option connector 1
Contact I/O
communication connector
Maintenance connector
Serial communication
(RS-485/RS-232C) connector
Terminal block
Option connector 2
Option connector 1
Contact I/O
communication connector
Serial communication
(RS-485/RS-232C) connector
Earth leakage breaker
Power supply cable and Signal cable connection
（Behind the rear cover）

HRX-OM-W058
Chapter 2 Name and Function of Parts
HRS-R Series 2.2 Name and Function of Parts
2-3
Table 2-1 Accessories list
1
Operation Manual
2pcs.
(Jpn: 1pc., Eng:1pc.)
2
Alarm code list label
1pc.
3
Sequence I/O command signal
connector
1pc.
4
Fitting (for drain port)1
1pc.
5
Ferrite core (for communication)
1pc.
6
For HRS-AF-20-
G thread adapter set
1set
For HRS-AN-20-
NPT thread adapter set
 Not included when option [High pressure pump] is selected.

HRX-OM-W058
Chapter 2 Name and Function of Parts
2.3 Function of Parts HRS-R Series
2-4
2.3 Function of Parts
The function of parts is as follows.
Table 2-2 Function of parts
Name
Function
Operation display panel
Runs and stops the product and performs settings such as the circulating
fluid temperature.
For details, refer to ’’2.4 Operation display panel’’.
Fluid level gauge
Indicates the circulating fluid level of the tank. For details, refer to ’’3.5 Fill of
circulating fluid’’.
Communication connector
Model label
Shows the part number of the product.
For details, refer to ‘’1.4.1 Product Label’’.
Circulating fluid outlet port
The circulating fluid flows out from the outlet port.
Circulating fluid return port
The circulating fluid returns to the return port.
Drain port
This drain port to drain the circulating fluid out of the tank.
(The plug is connected to standard pump type at the time of shipment. The
ball valve is installed in the high pressure pump type.)
Power supply cable entry
Insert the power cable through the power cable entry and connect to the
terminal block or earth leakage breaker (option B).
Refer to ”3.3.2 Electrical wiring”and “3.3.3 Preparation and wiring of
power supply cable”for details.
Terminal block
Earth leakage breker
(When Earth leakage breker
[Option B] is selected.)
Signal cable entry
Insert the signal cable through the signal cable entry and connect to the
teminal or D-sub connector for communication.”3.3.5 Wiring of operation
signal output and alarm signal output”, ”3.3.6 RS-485 Communication
wiring”, “3.3.7RS-232C Communication wiring”or refer to the Operation
Manual for communication for details.
Automatic water-fill port
(When automatic fluid filling
[Option J] is selected.)
Piping to the automatic fluid filling port enables easy supply of the circulating
fluid through the built-in solenoid valve.The supply pressure should be in a
range of 0.2 to 0.5MPa.
Overflow port
(When automatic fluid filling
[Option J] is selected.)
This is necessary when automatic fluid filling function.Discharge excess
circulating fluid when the fluid level in the tank rises.