Hitachi NEXT Series User manual

INSTRUCTION MANUAL
DSP-45WT6N
DSP-55WT6N
DSP-75WT6N
DSP-55VWTN
DSP-75VWTN
[Without dryer type]
●This INSTRUCTION MANUAL explains in detail
the important items that require attention;
observed as the following:
●Always observe instructions of WARNING,
CAUTION and IMPORTANT, as they indicate
considerable risks to safety.
HITACHI Oil-Free Rotary Screw Air Compressor
Water-cooled
GRAPHIC DESCRIPTIONS:
Air-cooled
DSP-45AT6N
DSP-55AT6N
DSP-75AT6N
DSP-55VATN
DSP-75VATN
[Without dryer type]
WARNING
: Indicates warnings. If handled improp-
erly, death or severe injury could
result.
CAUTION
: Indicates cautions. If handled improp-
erly, injury and/or physical damage
could result.
Air-Cooled : Indicates air-cooled type.
: Indicates water-cooled type.
: Indicates variable speed type.
Water-Cooled
IMPORTANT
: Indicates information that needs attention,
other than WARNING and CAUTION.
: Indicates a reference page.
Prior to operation of this air compressor, ensure that all
operators read and understand this INSTRUCTION MANUAL
completely, thereby operating it safely and properly.
Place the INSTRUCTION MANUAL near the air compressor to
make it available at any time, and refer to it as the need arises.

How to Use This Instruction Manual
■Model Code
●This Instruction Manual covers the standard models of HITACHI DSP air compressor.
●This Instruction Manual is intended to assist daily operators and maintenance personnel
in the installation, operation, control and service of the air compressor.
●Prior to operation of this air compressor, ensure that all operators read and understand
this INSTRUCTION MANUAL completely, thereby operating it safely and properly.
Place the INSTRUCTION MANUAL near the air compressor to make it available at any
time, and refer to it as the need arises.
●If there are any questions or comments, please contact the local Hitachi distributor/
master dealer or representative office.
●Fill your compressor’s model name, Serial Number, etc. in Section 13 of this Instruction
Manual. Such information may be helpful when ordering parts, periodic maintenance,
and overhaul.
●For improvement of the product, contents in this manual are subject to change without notice. Please be forewarned.
●The product drawing in this manual shows DSP-75VWTN as a typical example.
DSP-75VWT6N
Dry or oil-free rotary
Screw air compressor
Packaged
NEXTseries
Frequency (5: 50 Hz, 6: 60 Hz)
Two-stage
Cooing Method (A: air-cooled, W: water-cooled)
V: V type
without V: fixed-speed type
NominalOutput(kW)
Never remove a protective device from the air compressor or
modify the air compressor.
It is imperative to install an earth leakage (ground) circuit breaker
on the power cable. This prevents a ground fault accident.
DSP air compressors are not designed, intended or approved for
breathing air applications. Hitachi does not approve specialized
equipment for breathing air applications and assumes no
responsibility or liability for compressors used for breathing air
services.
WARNING
CAUTION
The motor rotor contains a powerful magnetic field. This field can effect the operation of digital devices
such as watches, mobile phones etc. Assembly or handling of the rotor should not be attempted by
personnel with cardiac pacemakers, defibrillators or other implanted electronic medical device.

1
Contents
1. SAFETY PRECAUTIONS ………………………………………………………………………………………… 2
2. GENERAL DESCRIPTION 2.1 Appearance………………………………………………………………………… 6
2.2 Components………………………………………………………………………… 8
2.3 Daily Operating Components …………………………………………………… 10
3. OPERATION PROCEDURE 3.1 Instrument Panel …………………………………………………………………… 12
3.2 Start/Stop Operation ……………………………………………………………… 14
3.3 How to Use the Liquid Crystal Display (LCD)…………………………………… 15
3.4 How to Use the Digital Monitor…………………………………………………… 25
3.5 Daily Operation of Air Compressor……………………………………………… 32
3.6 Daily Operation of Oil Mist Remover …………………………………………… 34
3.7 Adjustment Procedure …………………………………………………………… 34
4. TROUBLESHOOTING 4.1 Protective Device…………………………………………………………………… 36
4.2 Troubleshooting of Air Compressor……………………………………………… 40
4.3 Troubleshooting of Oil Mist Remover…………………………………………… 41
5. INSTALLING AND 5.1 Unpacking the Air Compressor…………………………………………………… 42
PIPING THE DSP 5.2 Conveying the DSP Air Compressor …………………………………………… 42
5.3 Installing the DSP Air Compressor ……………………………………………… 43
5.4 Piping the DSP Air Compressor ………………………………………………… 44
5.5 Ventilation of Air Compressor Room …………………………………………… 47
6. STARTUP OPERATION 6.1 Startup Operation of the Air Compressor ……………………………………… 49
6.2 Initial Setting of OMR Regulator  ………………………………………………… 52
7. WIRING 7.1 Power Supply Equipment ………………………………………………………… 53
7.2 MIV and WIVM wiring……………………………………………………………… 53
7.3 Connecting the Power Cable……………………………………………………… 54
7.4 Wiring Diagram……………………………………………………………………… 56
7.5 Control panel/LCD Monitor Specifications……………………………………… 57
8. STANDARD COMPONENTS 8.1 Standard Components …………………………………………………………… 67
AND SUBSYSTEMS8.2 Air/Oil/Water Flow ………………………………………………………………… 68
8.3 Cooling Water ……………………………………………………………………… 74
8.4 Capacity Control System ………………………………………………………… 75
8.5 Oil Mist Remover System ………………………………………………………… 81
9. MAINTENANCE9.1 Periodical Maintenance of Air Compressor …………………………………… 82
9.2 Standard Maintenance Schedule………………………………………………… 83
9.3 Maintenance Schedule for Oil Mist Remover ………………………………… 87
9.4 How to Service the Air Compressor …………………………………………… 88
10. CAUTIONS FOR A LONG TERM OPERATION SUSPENSION …………………………………………… 108
11. PARTS LIST ……………………………………………………………………………………… 109
12. WARRANTY AND 12.1 Limited Warranty………………………………………………………………… 135

AFTER-SALES SERVICE 12.2 After-Sales and Service ………………………………………………………… 135
13. RELOCATION AND 13.1 Relocation………………………………………………………………………… 136
DISPOSAL 13.2 Disposal…………………………………………………………………………… 136
14. OPERATION RECORD LOGBOOK……………………………………………………………………………… 137
15. STANDARD SPECIFICATIONS  ………………………………………………………………………………… 139

2
1. SAFETY PRECAUTIONS
WARNING
Rotating Parts!
Keep hands and rods, etc. away from the rotating parts
(Cooling fans, etc.)
Use caution at all times, when air compressor is powered.
The air compressor may be capable of restarting without
hitting the START button.
When the air compressor is operating, do not remove or
open the enclosure panels and doors.
Before servicing the air compressor, stop it, disconnect the
power, especially when accessing any rotating parts.
Rotating Parts!
Keep hands and rods, etc. away from the rotating
parts (Cooling fans, etc.)
Use caution at all times, when air compressor is
powered. The air compressor may be capable of
restarting without hitting the START button.
When the air compressor is operating, do not
remove or open the enclosure panels and doors.
Before servicing the air compressor, stop it, disconnect
the power, especially when accessing any rotating parts.
●
●
●
●
●
●
●
●
WARNING
WARNING
Hot Surface!
Do not directly touch any component
inside the air compressor enclosure
when the air compressor is operating
or immediately after it has stopped,
as the components are extremely hot
and can cause severe injury.
Before servicing the air compressor,
stop it, disconnect the power, then
wait for the air compressor to cool
down.
WARNING
Hot Surface!
Discharge Air Pipe
Air End
Heated!!
Discharge Air Pipe
Air End
Heated!!
●Fixed speed type
●Vtype
Electric Shock Hazard!
Electric Shock Hazard!
* Inside the enclosure
WARNING
WARNING
●
●
Do not directly touch any component
inside the air compressor enclosure
when the air compressor is operating
or immediately after it has stopped,
as the components are extremely hot
and can cause severe injury.
Before servicing the air compressor,
stop it, disconnect the power, then
wait for the air compressor to cool
down.
●
●
Before servicing or wiring the air compressor,
disconnect the power. This will prevent anyone from
turning on the power and causing an electric shock
that could lead to severe injury or death.
Do not allow any unlicensed person to wire the air
compressor. Always use a licensed electrician.
Ground the air compressor.
●
●
●
10 minutes before servicing or wiring the air compressor,
disconnect the power. This will prevent anyone from
turning on the power and causing an electric shock
that could lead to severe injury or death.
Do not allow any unlicensed person to wire the air
compressor. Always use a licensed electrician.
Ground the air compressor.
●
●
●
To ensure safe and proper operation of the air compressor, it is indispensable to carefully
read and understand the following warnings and instructions detailed below. These
warnings and instructions are attached to the air compressor as shown in the figure
below.
Air-Cooled DSP-45/55/75ATN
DSP-55/75VATN

3
1. SAFETY PRECAUTIONS
●Vtype
WARNING
Strong magnetism
Pay high attention for handling the motor for it has
very strong permanent magnet inside.
Those who have electronic medical devices such as
pace makers must be away from the magnetic rotors.
Do not move electronic devices such as magnetic
cards, watch or measuring equipment closer to the
magnetized motor rotors.
For disassembly, contact the close Hitachi authorized
distributors.
Do Not Breathe Air!
Discharge air can contain Carbon Monoxide and
other contaminants. Breathing the air can cause
severe injury or death.
High Pressure Air!
High pressure air can cause severe injury or death.
Be careful when air compressor is operating.
Pressurized air can blow out of air relief valves
and etc. at incredibly high velocities.
When using compressed air to clean equipment,
use extreme caution and/or wear eye protection.
Before servicing the air compressor, stop it,
disconnect the power, and relieve pressure before
removing filter, plug, fitting or cover.
Rotating Parts!
Keep hands and rods, etc. away from the rotating
parts (Cooling fans, etc.)
Use caution at all times, when air compressor is
powered. The air compressor may be capable of
restarting without hitting the START button.
When the air compressor is operating, do not
remove or open the enclosure panels and doors.
Before servicing the air compressor, stop it,
disconnect the power, especially when accessing
any rotating parts.
Electric Shock Hazard!
Before servicing or wiring the air compressor,
disconnect the power. This will prevent anyone
from turning on the power and causing an electric
shock that could lead to severe injury or death.
Do not allow any unlicensed person to wire the air
compressor. Always use a licensed electrician.
Ground the air compressor.
WARNING WARNING
WARNING
WARNING
Hot Surface!
Do not directly touch the air end, discharge air
pipe,and coolers when the air compressor is
operating and immediately after it has stopped,
because these parts are heated then.
Before servicing the air compressor (especially when
accessing to the heated parts), stop it, disconnect
the power, and wait until it is cooled down.
WARNING
CAUTION
Precaution against Fire!
Keep any other hazardous materials such as
flammable solvents away from the air compressor.
Also do not use fire nearby it; otherwise a spark
may enter the air compressor and burn it internally.
Do not remove any protective relay’ s. Also do not
make a modification of the control circuit that may
result in impairing the protective relayʼs function.
Remember that the loss of the protective relayʼs
function may cause serious damage.
Install an earth leakage circuit breaker between
the air compressor and the power supply. Do not
use a disconnector such as a knife switch
because it cannot protect the air compressor and
may cause burnout of the air end if a ground fault
has occurred.
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●

4
1. SAFETY PRECAUTIONS
WARNING
Rotating Parts!
WARNING
Electric Shock Hazard!
WARNING
Electric Shock Hazard!
WARNING
Hot Surface!
Heated!!
Air End
Discharge Air
pipe
WARNING
Hot Surface!
Do not directly touch any component
inside the air compressor enclosure
when the air compressor is operating
or immediately after it has stopped,
as the components are extremely hot
and can cause severe injury.
Before servicing the air compressor,
stop it, disconnect the power, then wait
for the air compressor to cool down.
Discharge Air
Pipe
Air End
Heated!!
WARNING
Hot Surface!
Aftercooler
header
Intercooler
header
Heated!!
●Fixed speed type
●Vtype
Do not directly touch any component
inside the air compressor enclosure
when the air compressor is operating
or immediately after it has stopped,
as the components are extremely hot
and can cause severe injury.
Before servicing the air compressor,
stop it, disconnect the power, then
wait for the air compressor to cool
down.
●
●
Do not directly touch any component
inside the air compressor enclosure
when the air compressor is operating
or immediately after it has stopped,
as the components are extremely hot
and can cause severe injury.
Before servicing the air compressor,
stop it, disconnect the power, then
wait for the air compressor to cool
down.
●
●
●
●
Before servicing or wiring the air compressor,
disconnect the power. This will prevent anyone from
turning on the power and causing an electric shock
that could lead to severe injury or death.
Do not allow any unlicensed person to wire the air
compressor. Always use a licensed electrician.
Ground the air compressor.
●
●
●
●
●
●
10 minutes before servicing or wiring the air
compressor, disconnect the power. This will prevent
anyone from turning on the power and causing an
electric shock that could lead to severe injury or death.
Do not allow any unlicensed person to wire the air
compressor. Always use a licensed electrician.
Ground the air compressor.
Keep hands and rods, etc. away from the rotating parts
(Cooling fans, etc.)
Use caution at all times, when air compressor is
powered. The air compressor may be capable of
restarting without hitting the START button.
When the air compressor is operating, do not remove or
open the enclosure panels and doors.
Before servicing the air compressor, stop it, disconnect the
power, especially when accessing any rotating parts.
●
●
●
●
Water-Cooled DSP-45/55/75WTN
DSP-55/75VWTN

5
1. SAFETY PRECAUTIONS
WARNING
Strong magnetism
●Vtype
Do Not Breathe Air!
Discharge air can contain Carbon Monoxide and
other contaminants. Breathing the air can cause
severe injury or death.
High Pressure Air!
High pressure air can cause severe injury or death.
Be careful when air compressor is operating.
Pressurized air can blow out of air relief valves
and etc. at incredibly high velocities.
When using compressed air to clean equipment,
use extreme caution and/or wear eye protection.
Before servicing the air compressor, stop it,
disconnect the power, and relieve pressure before
removing filter, plug, fitting or cover.
Rotating Parts!
Keep hands and rods, etc. away from the rotating
parts (Cooling fans, etc.)
Use caution at all times, when air compressor is
powered. The air compressor may be capable of
restarting without hitting the START button.
When the air compressor is operating, do not
remove or open the enclosure panels and doors.
Before servicing the air compressor, stop it,
disconnect the power, especially when accessing
any rotating parts.
Electric Shock Hazard!
Before servicing or wiring the air compressor,
disconnect the power. This will prevent anyone
from turning on the power and causing an electric
shock that could lead to severe injury or death.
Do not allow any unlicensed person to wire the air
compressor. Always use a licensed electrician.
Ground the air compressor.
WARNING WARNING
WARNING
WARNING
Hot Surface!
Do not directly touch the air end, discharge air
pipe,and coolers when the air compressor is
operating and immediately after it has stopped,
because these parts are heated then.
Before servicing the air compressor (especially when
accessing to the heated parts), stop it, disconnect
the power, and wait until it is cooled down.
WARNING
CAUTION
Precaution against Fire!
Keep any other hazardous materials such as
flammable solvents away from the air compressor.
Also do not use fire nearby it; otherwise a spark
may enter the air compressor and burn it internally.
Do not remove any protective relay’ s. Also do not
make a modification of the control circuit that may
result in impairing the protective relayʼs function.
Remember that the loss of the protective relayʼs
function may cause serious damage.
Install an earth leakage circuit breaker between
the air compressor and the power supply. Do not
use a disconnector such as a knife switch
because it cannot protect the air compressor and
may cause burnout of the air end if a ground fault
has occurred.
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
Pay high attention for handling the motor for it has
very strong permanent magnet inside.
Those who have electronic medical devices such as
pace makers must be away from the magnetic rotors.
Do not move electronic devices such as magnetic
cards, watch or measuring equipment closer to the
magnetized motor rotors.
For disassembly, contact the close Hitachi authorized
distributors.

Enclosure
Oil Filling Port
Air Intake
(Inlet to the Air End)
Oil Level Gauge
Sling Fitting
Instrument Panel
Left Door
Plate of Operating/
Servicing Instructions
Air Exhaust
(Air Compressor Package)
Compressed Air Discharge
Power Supply Port
Air Intake
(Air Compressor Package)
Air Exhaust
Enclosure panels
lower the sound level
of the air compressor
package.
Use the port to fill the
gear case with oil.
This indicates the
quantity of the oil in
the gear case. Check
the oil level before
starting the DSP and
when operating it.
Use the sling fitting
when moving and
installing the DSP air
compressor.
Read carefully the
plate before operating
and servicing the DSP.
Open the left door only
when servicing the
DSP air compressor.
Keep it closed when
operating the DSP air
compressor.
This panel discharges
the hot air generated
in the air compressor.
Check the
specifications, power
supply and voltage
before connecting the
power supply.
Air Intake
Air Exhaust Air Intake
Air Intake
OMR
8.5 for the details
3.1 for the details
6
2. GENERAL DESCRIPTION
2.1 Appearance
This section illustrates and describes the major components of the DSP air compressor. Be familiar with the name,
location and function of each component before using the DSP air compressor.
[Front View]
Air-Cooled DSP-45/55/75ATN
DSP-55/75VATN
[Rear View]

7
2. GENERAL DESCRIPTION [Appearance]
Enclosure
Oil Filling Port
Oil Level Gauge
Sling Fitting
Instrument Panel
Plate of Operating /
Servicing Instructions
Compressed Air Discharge
Power Supply Port
Air Intake
(Air for Package)
Enclosure panels
lower the sound level
of the air compressor
package.
Use the port to fill the
gear case with oil.
This indicates the
quantity of the oil in the
gear case. Check the
oil level before starting
the DSP and when
operating it.
Read carefully the
plate before operating
and servicing the DSP.
This panel discharges
the hot air generated in
the air compressor.
Check the
specifications, supply
voltage and frequency
before connecting the
power.
(Vtype only)
Air Exhaust
(Air Compressor Package)
Air Intake
(Inlet to the Air End)
Left Door
Open the left door only
when servicing the
DSP air compressor.
Keep it closed when
operating the DSP air
compressor. Air Intake
Air Exhaust
Air Intake
Air Intake
Air Exhaust
Use the sling fitting
when moving and
installing the DSP air
compressor.
Air Intake
(Air Compressor Package)
OMR
8.5 for the details
3.1 for the details
Water-Cooled DSP-45/55/75WTN
DSP-55/75VWTN
[Front View]
[RearView]

8
2. GENERAL DESCRIPTION [Components]
2.2 Components
Oil cooler
Intercooler
Aftercooler
Air intake filter
Oil mist remover
(OMR)
Discharge pipe
(Compressed air discharge)
Oil level gauge
Control panel
Enclosure
Instrument panel
Main motor
Oil filter
1st-stage
Airend
2nd-stage
Airend
Check valve
Cooling fan
Common base
Air relief valve
[Front View]
[Rear View]
Air-Cooled DSP-45/55/75ATN
DSP-55/75VATN

9
2. GENERAL DESCRIPTION [Components]
Cooling fan
Intercooler
Aftercooler
Oil cooler
Air intake filter
Oil mist remover
(OMR)
Control panel
Enclosure
Instrument panel
Main motor
Discharge pipe
(Compressed air discharge)
Check valve
Common Base
Air relief valve
Oil filter
1st-stage
Airend
2nd-stage
Airend
Oil level gauge
[Front View]
[Rear View]
Water-Cooled DSP-45/55/75WTN
DSP-55/75VWTN

10
2. GENERAL DESCRIPTION [Daily Operating Components]
Oil filling port
Oil level gauge
●Indicates the operation control section.
( 3.1)
●Power ON →The Power light ON.
●Start: Press the START button. →Start light ON.
●Stop: Press the UNLOAD STOP button. →
The compressor unloads 5 minutes and then
stops. →Start light OFF.
●Power OFF: →Power light OFF.
2.3 Daily Operating Components
Controls on the Instrument Panel
Aftercooler and Intercooler - Condensate Drain Valve Lubricating Oil
Oil Level Gauge
1 2
3 4
●Oil: Use genuine Hitachi GL-68 DSP Compressor
Oil. Replace the oil every 8,000h operating hour or
every 2-year, whichever comes earlier.
UP/DO
WN
+/-
AUTO
MONITOR
MENU
SET
SELECT/WIDE
2
RUNNINGCONTROL
STARTREMOTE
1
FUNC
[×10h]
ALARM
STR
REMOTE
RUNNINGMODE
AUTOSTART
POWER
LOAD
RESET
SHUTDOWN
STOP
MONITOR
UNLOAD STOP
●Verify that air containing condensate is discharged
intermittently from the intercooler and aftercooler
drain ports.

The higher the temperature and humidity, the more condensate
is produced. Condensate may not be produced on the
intercooler side during winter.
Aftercooler
drain port
Intercooler
drain port
Control line filter
drain port
(fixed-speed type only)
●Verify that the oil stays between the upper and
lower red lines of the oil level gauge during the
operation.
Oil level might be higher than upper line during air compressor
stopping due to oil returning from the cooler and pipings.

11
2. GENERAL DESCRIPTION [Daily Operating Components]
Control line filter
Sight Glass
①Stop the cooling water flow when the DSP has
stopped running.
②Open the water relief pet cock and the water drain
valve at the water drain port to remove the cooling
water from the system.
③Take care to completely drain the cooling water
during the winter season to prevent freezing in the
cooling water pipes ( 8.3)
Water drain port
Water drain port
Water drain pet cock
Cooling water discharge valve
Cooling Water
5
●Normally use the UNLOAD STOP button to stop
the air compressor. The air compressor then
unloads for 5 minutes and stops running.
(In the case of an emergency, press the
EMERGENCY STOP button to stop operation.)
Stopping Operation
UP/DO
WN
+/-
AUTO
MONITOR
MENU
SET
SELECT/WIDE
2
RUNNINGCONTROL
STARTREMOTE
1
FUNC
[×10h]
ALARM
STR
REMOTE
RUNNINGMODE
AUTOSTART
POWER
LOAD
RESET
SHUTDOWN
STOP
MONITOR
UNLOAD STOP
Keeping the second-stage air end as dry as possible is
essential for preventing it from rusting due to a long
term operation suspension. When stopping the DSP,
therefore, execute an unloading operation and thereby
remove the moisture from the second-stage air end.
Control Line Filter
[Fixed speed type]
6
●Check the sight glass on the control line filter to
make sure that the condensate discharged
properly.
IMPORTANT
Water-Cooled
7

+/-
AUTO
MONITOR
MENU
SET
MONITOR
UP/
DOWN
LCD monitor
Displays the operation
data, various settings,
shutdown/alarm informa-
tion, etc. ( 3.3)
MENU button
Displays the menu
screen. Also used to
move the cursor.
( 3.3.4)
+/- UP/DOWN button
Moves the cursor.
( 3.3.4)
SET button
Saves any adjusted set
points.
Contrast adjustment
SET + [△] buttons:
Increases brightness.
SET + [▽] buttons:
Decreases brightness.
( 3.3.6 󱦱)
MONITOR button
Switches the monitor
display.
( 3.3.1)
AUTO light (yellow)
ON (glowing) when an
automatic operation (an
AUTO operation, a
scheduling operation, or
lead/lag operation) is
activated. ON (blinking)
when external calendar
or scheduling operation
is abnormal.
( 3.3.3 / 3.3.5 󱦵)
RESET button
Resets SHUTDOWN
and ALARM screens.
( 3.3.3)
REMOTE button
Activates or deactivates
a remote start/stop
operation locally or on
the instrument panel.
( 3.4.6)
12
3. OPERATION PROCEDURE
3.1 Instrument Panel

SELECT/WIDE
2
RUNNINGCONTROL
STARTREMOTE
1
FUNC
［× 10h］
ALARM
STR
REMOTE
RUNNINGMODE
AUTOSTART
POWER
LOAD
RESET
SHUTDOWN
STOP
SELECT/WIDE button/light (yellow)
Press to confirm the measurement
values, shutdown history, and
setting status. ( 3.4.1)
To set the ECOMODE [Energy
saving mode] (Fixed speed type
only), hold down the
SELECT/WIDE
button for at least 7 seconds. The
light blinks and ECOMODE is set.
UNLOAD STOP button
STOP button
Stops the compressor
immediately without unloading.
( 3.2.2)
START button
Starts the air compressor.
The START light turns ON while
air compressor is running.
UNLOAD STOP
Press this button to stop the air compressor.
The air compressor will stop after removing the
condensate from the air end.
※This stop button is effective while a stand alone operation.
Stops the compressor in normal state.
The compressor stops running
after removing the condensate
from the air end. ( 3.2.2)
Digital Monitor
Used for basic settings as well
as other various settings in
combination with the LCD monitor.
( 3.3.6)
●ALARM light (green): Blinks
if an alarm failure occurs.
EMERGENCY STOP button
Stops for emergency.
( 3.2.3)
●POWER light (yellow): Lights up when the main
power is turned on.
●REMOTE light (green):
ON (glowing) when the REMOTE button is
pressed in order to activate a remote operation.
ON (blinking) when an external remote-operation-
activation switch has been turned on in order to
activate a remote operation. ( 3.4.6)
●LOAD light (yellow): ON (glowing) when the air
compressor is loading.
●AUTO START light (green):
ON (glowing) while the air compressor is in a stop
due to an AUTO operation,lead/lag operation, or
scheduling operation.
ON (blinking) while the air compressor is in a stop
due to a restartable instantaneous power
interruption. ( 3.3.3)
●SHUTDOWN light (red): Blinks if a shutdown
failure occurs. ( 3.3.3)
RUNNING MODE Light
S
T
O
P
E
M
E
R
G
E
N
C
Y
13
3. OPERATION PROCEDURE [Instrument Panel]

14
3. OPERATION PROCEDURE [Start/Stop Operation]
3.2.1 Connecting the Power
When the power is connected, the POWER light turns
ON and the following Hitachi logo display appears on the
LCD. After 5 seconds, monitoring display appears; it
shows operation type, discharge air pressure, total
operating hours, etc.
If phase is reversed, "Connection Error: Reverse
Phase" will be displayed on the LCD monitor as a
setting/connection check message. In this case,
exchange 2 out of the 3 main power cables. If the air
compressor has control transformer in the control panel,
Open Phase is indicated as Reverse Phase. So check the
power cable connection of T Phase.
In case of open phase, “Connection Error: Open
Phase”will be displayed on the LCD monitor. In this
case, check the power cables.
3.2 Start/Stop Operation

COMPRESSOR MONITOR
CONTROLLER
㻞㻜㻝㻠䠋㻜㻝䠋㻜㻝 㻝㻥䠖㻜㻞
㼀㼅㻼㻱䠖㼂㻿㻰㻭
㻰 㻵 㻿䠊㻼㻾㻱㻿㻿䠖 㻌 㻜㼜 㼟 㼕
㻾㼁㻺 㻌㻴㻻㼁㻾䠖 㻝 㻞 㻞䡄
㻸㻻㻭㻰 㻌 㻴㻻㼁㻾䠖 㻡 㻠䡄
㻸㻻㻭㻰 㼀 㻵㻹㻱㻿 䠖 㻝 㻞 㻟
㻸㻻㻭㻰 㻾㻭㼀㻱 䠖 㻝 㻝䠂
㻸㻻㻭㻰 㼀 㻵 㻹㻱 䠖 㻞 㻠 䡏
㼁㻺㻸㻻㻭㻰 㻌 㼀 㻵 㻹㻱 䠖 㻝 䡏
㻯㼁㻾㻾㻱㻺㼀 䠖 㻡 㻜䠝
㻲㻾㻱㻽㼁㻱㻺㻯㼅䠖 㻌 㻌 㻌 㻜䠤䡖
㻻㼁㼀㻼㼁㼀䠖 㻖 㻖 㻚 㻖䡇䠳
※The asterisk blinks when the clock and total running
hours are active.
5 seconds
3.2.2 Start/Stop
When the START button is pressed, the START light
turns on and the compressor starts operating.
When the compressor starts running, the asterisk on the
right side of running hours blinks and running time
starts to be counted.
To stop the operation, press the UNLOAD STOP button.
Operation stops after 5-minute drying of air end and air
piping.
To stop the compressor immediately without unloading,
press the STOP button.
Note) If the STOP button is pressed during unloading,
the compressor stops immediately.
(1) The air compressor does not start for 10 second after
power on to secure the safety.
For , if the START button is pressed within 10 to
15 seconds after power-on, the AUTO START light will
blink up to 10 seconds for operation preparation and
then the compressor starts running.
(2) Make sure that the door is closed before starting the
air compressor.
(3) Buttons, such as START/STOP/RESET function shall
be pressed for more than 0.3 seconds.
IMPORTANT
3.2.3 Emergency Stop
Pressing EMERGENCY STOP bottom, the DSP
compressor immediately stops.
This switch should only be pressed in emergency.
The compressor can not be restarted until the switch is
manually reset.
Turn the switch knob clockwise and press the RESET
button to reset.

15
3. OPERATION PROCEDURE [How to Use the Liquid Crystal Display (LCD)]
㻞㻜㻝㻠䠋㻜㻝䠋㻜㻝 㻝㻥䠖㻜㻞
㼀㼅㻼㻱 䠖㼂㻿㻰㻭
㻰 㻵 㻿䠊㻼㻾㻱㻿㻿 䠖 㻤 㻣㼜 㼟 㼕
㻾㼁㻺 㻌㻴㻻㼁㻾䠖 㻝 㻞 㻞䡄
㻸㻻㻭㻰 㻌 㻴㻻㼁㻾 䠖 㻡 㻠 䡄
㻸㻻㻭㻰 㼀 㻵 㻹㻱㻿 䠖 㻝 㻞 㻟
㻸㻻㻭㻰 㻾㻭㼀 㻱䠖 㻝 㻝䠂
㻸㻻㻭㻰 㼀 㻵 㻹㻱 䠖 㻞 㻠 䡏
㼁㻺㻸㻻㻭㻰 㻌 㼀 㻵 㻹㻱 䠖 㻝 䡏
㻯㼁㻾㻾㻱㻺㼀䠖 㻡 㻜䠝
㻲㻾㻱㻽㼁㻱 㻺㻯㼅 䠖 㻞 㻟 㻚 㻤䠤䡖
㻻㼁㼀㻼㼁㼀䠖 㻖 㻖 㻚 㻖䡇䠳
㻞㻜㻝㻠䠋㻜㻝䠋㻜㻝 㻝㻥䠖㻜㻞
㻼㻾㻱㻿㻿㼁㻾㻱
㻵 㻺㼀 㻿 㼀㻳䠊㻼 䠖 㻖 㻖 㼜 㼟 㼕
㻻 㻵 㻸 㻌 㻼㻾㻱㻿䠖 㻖 㻖㼜 㼟 㼕
㻯㻸 㼀䠊㻼㻾㻱 㻿䠖 㻖 㻖㼜 㼟 㼕
㼀㻱㻹㻼㻱㻾㻭㼀㼁㻾㻱
㻰㻵㻿䠊㼀㻱㻹㻼㻝䠖 㻌 㻤㻜䜪㻲
㻰㻵㻿䠊㼀㻱㻹㻼㻞䠖 㻌 㻤㻜䜪㻲
㻻 㻵 㻸 㻌 㼀 㻱 㻹 㻼 䠖 㻖 㻖 䜪㻲
㻯 㻸㼀䠊 㼀㻱 㻹㻼 䠖 㻖
㻖
㻖 㻖 䜪㻲
㻞㻺㻰 㻌 㻿㼁㻯㼀䠊㼀䠊 䠖 㻖 㻖䜪㻲
㻹㻭 㻵 㻺㼀㻱㻺㻭㻺㻯㻱
㻴㻾䠊㼀㻻㻌㻹㻭㻵㻺㼀䠖 㻢㻜㻜㻜䡄
㻺㻱㼄㼀㻌 㻹㻭 㻵㻺㼀䠖 㻖㻖㻖㻖
㻖
㻞㻜㻝㻠䠋㻜㻝䠋㻜㻝 㻝㻥䠖㻝㻥 㻖
㼀㼅㻼㻱 䠖㼂㻿㻰㻭 㼀㼁
㻰 㻵 㻿䠊㻼㻾㻱㻿㻿 䠖 㻢 㻣㼜 㼟 㼕
䠘㻿 㻴 㼁 㼀 㻰 㻻 㼃 㻺䠚
㻯㻻㻻 㻸 㻭㻺㼀 䠖
㻻㻵 㻸䠖
㻞䠪㻰 㻌 㻿㼁㻯㼀䠊㼀㻱㻹㻼
㻴㻵㻳㻴 㻌㻰㻵㻿䠊㼀㻱㻹㻼䠖
㻯 㻻 㻺 㼀 㻭 㻯 㼀 㻻 㻾 㻌㻱 㻾 㻾 䠖
㻻㼂㻱㻾 㻸㻻㻭㻰 䠖
㻸 㻻㼃 㻌 㼃䠊 㻵 㻺 㼀 㻿 㼀㻳 㻌 㻼 䠊
㻰 㻾 㼅 㻱 㻾 㻌㻌㻌㻌 㼃 䠋 㻻 㻌 㻿 㻱 㻼 䠊
㻱㻸 㻱㻹㻱㻺㼀
㻼 㼞 㼑 㼟 㼟㻾㻱㻿 㻌 㼍 㼒 㼠 㼑 㼞 㻌 㻯㻴㻷䠊
㼇 㻲㼁㻺㻯㼀 㻵 㻻㻺 㻹㻱㻺㼁 㼉
㻝䠊㻮㻭㻿 㻵 㻯 㻌 㻿 㻱㼀㼁㻼
㻞 䠊㻹㼁 㻸 㼀 㻵 㻙 㼁㻺 㻵 㼀
㻟䠊㻯㻭㻼㻭㻯 㻵 㼀㼅 㻯㻻㻺㼀㻾㻻㻸
㻠䠊㻿㻯㻴㻱㻰㼁㻸 㻱
㻡䠊㻻㻼㻱㻾㻭㼀 㻵 㻻㻺 㻰㻭㼀㻭
㻢䠊㻸㻻㻭㻰 㻰㻭㼀㻭
㻣䠊㻭㻸㻭㻾㻹 㻴 㻵 㻿㼀㻻㻾㼅
㻤 䠊 㻿 㻴㼁 㼀㻰㻻㼃㻺 㻴 㻵 㻿 㼀 㻻㻾 㼅
㻿㻱㼀 䠖㻻㻼㻱㻺 㻹㻻㻺䠖㻮㻭㻯㻷
■Function Menu display
■Monitor Screen ( 3.3.2)
Monitor display 1
Monitor display 2
Monitor display 3
■Message Screen ( 3.3.3)
■Menu Screen ( 3.3.4)
MONITOR
MENU
MONITOR
MONITOR
MONITOR
3.3.1 How to Move between the Various Displays
■Menu Displays
Follow the bottom line message on the display.
3.3 How to Use the Liquid Crystal Display (LCD)
■Monitoring Displays
There are three monitoring displays as shown below.
This monitoring display is the top screen
The monitoring display switches every time the
MONITOR button is pressed.
■Message Display
Automatic restart/stop messages after shutdown or
warning occurrence and inspection/maintenance
messages is preferentially displayed in the Monitor
Display 3.
By pressing the MONITOR button here, the display
can be switched but is back to the Monitor Display 3
after approximately 10 seconds.
About the LCD Backlight
(1) In the event that no button has been used for 10
minutes, the LCD backlight automatically turns OFF
for protection to the display panel. It comes ON
again if any button is pressed, other than the START
and STOP buttons.
(2) If an event happens while the LCD backlight is off,
the backlight automatically turns ON and stays ON
as long as the event exists. Remote and instant stop
mode can't be set by the LCD monitor. Set after
referring to “3.4 How to Use the Digital Monitor.”
IMPORTANT

16
3. OPERATION PROCEDURE [How to Use the Liquid Crystal Display (LCD)]
3.3.2 Monitoring Displays
VSDA ＊SAVE
Indicates ECOMODE is activated for
fixed speed type.
(3.4.8)
Displayed when stop is limited for AUTO
operation (Standard: no symbol)
INTE : Indicates fixed speed type used the standard, 2-step
control system.
AUTO : Indicates fixed speed type used the automatic motor
stop/restart capacity control system.
VSDB : Indicates Vtype without the AUTO capacity control.
VSDA : Indicates Vtype with the AUTO capacity control
(standard setting for Vtype).
EXIT : Indicated the external capacity control is used.
MR : Indicates multi unit control system through the
communication is used
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
㻞㻜㻝㻠䠋㻜㻝䠋㻜㻝 㻝㻥䠖㻜㻞
㼀㼅㻼㻱䠖㼂㻿㻰㻭
㻰 㻵 㻿䠊㻼㻾㻱㻿㻿䠖 㻤 㻣㼜 㼟 㼕
㻾㼁㻺 㻌㻴㻻㼁㻾䠖 㻝 㻞 㻞䡄
㻸㻻㻭㻰 㻌 㻴㻻㼁㻾 䠖 㻡 㻠 䡄
㻸㻻㻭㻰 㼀 㻵 㻹㻱㻿䠖 㻝 㻞 㻟
㻸㻻㻭㻰 㻾㻭㼀㻱 䠖 㻝 㻝䠂
㻸㻻㻭㻰 㼀 㻵 㻹㻱 䠖 㻞 㻠 䡏
㼁㻺㻸㻻㻭㻰 㻌 㼀 㻵 㻹㻱 䠖 㻝 䡏
㻯㼁㻾㻾㻱㻺㼀䠖 㻥 㻞䠝
㻲㻾㻱㻽㼁㻱㻺㻯㼅 䠖 㻟 㻜 㻚 㻡䠤䡖
㻻㼁㼀㻼㼁㼀䠖 㻖㻖 㻚 㻖䡇䠳
㻹㻭㻿㼀㻱㻾
㻖
㻖
(10)
(11)
㻞㻜㻝㻠䠋㻜㻝䠋㻜㻝 㻝㻥䠖㻜㻞
㻼㻾㻱㻿㻿㼁㻾㻱
㻵 㻺㼀㻿 㼀㻳䠊㻼 䠖 㻞 㻤㼜 㼟 㼕
㻻 㻵 㻸 㻌 㻼㻾㻱㻿䠖 㻞 㻞㼜 㼟 㼕
㻯㻸㼀䠊㻼㻾㻱㻿 䠖 㻖䠊㻖 㻖㼜 㼟 㼕
㼀㻱㻹㻼㻱㻾㻭㼀㼁㻾㻱
㻰㻵㻿䠊㼀㻱㻹㻼㻝䠖 㻟㻞㻥䜪㻲
㻰㻵㻿䠊㼀㻱㻹㻼㻞䠖 㻟㻟㻤䜪㻲
㻻 㻵 㻸 㻌 㼀 㻱 㻹 㻼 䠖 㻟 㻝 䜪㻲
㻯㻸㼀䠊㼀㻱㻹㻼䠖 㻖㻖㻖䜪㻲
㻞㻺㻰 㻌 㻿㼁㻯㼀䠊㼀䠊䠖 㻝 㻢䜪㻲
㻹㻭 㻵 㻺㼀㻱 㻺㻭㻺㻯㻱
㻴㻾䠊㼀㻻㻌㻹㻭㻵㻺㼀䠖 㻜㻜㻜㻜䡄
㻺㻱㼄㼀㻌 㻹㻭 㻵㻺㼀䠖 㻖㻖㻖㻖
䠆
㻝
㻝
(1) Indicates current time. An asterisk blinks.
(2) Indicates the control state.
(3) Indicates a discharge pressure (DIS.PRESS)
(4) Indicates total running hours (RUN HOUR), total
loaded hours (LOAD HOUR), and total number of
loads (LOAD TIMES).
Blinking asterisk means counting the running hours.
(5) Indicates a percentage of load to unload of the DSP
air compressor (LOAD RATE).
For Vtype, the rate is calculated based on only
frequency. Indicates “＊＊＊”, if PQ wide mode is
selected.
(6) Indicates the amperage current of the package input
■Monitor Displays during Normal Operation
Monitor Display 1
Monitor Display 2
(CURRENT).
(7) Indicates the operating frequency of the main motor
(FREQUENCY).
(8) Indicates “＊＊＊” for this air compressor.
(9) Indicates (MASTER), when the air compressor is
master in lead-lag operation.
(10) Indicates each pressure and temperature. “＊＊＊”
indicates not in use.
(11) Indicates the number of hours until the next
maintenance service (HR. TO MAINT), and the
next maintenance type (NEXT MAINT).
“CURRENT” reading is an approximate S-phase Amp
reading.
“OUTPUT” reading is an approximate calculated power
reading.
IMPORTANT

17
3. OPERATION PROCEDURE [How to Use the Liquid Crystal Display (LCD)]
■Alarm Messages
①When the alarm occurs for the air compressor , the ALARM light and contents / details displayed on alarm screen on
the LCD monitor blink and operation continues. There are 2 types of alarm screens: ALARM and PROBLEM.
②Take the proper corrective action, and press the RESET button.
For further information, 4.1
NOTE) Malfunction detection of water failure is available for only water cooled single stage compressor. Malfunction
detection of dryer is available for only built-in dryer types. Malfunction detection of oil water separator and
element is not available.
3.3.3 Message Displays
■Shutdown Messages
①When the shutdown occurs for the compressor, the SHUTDOWN light and shutdown contents on the LCD monitor
(contents are displays on the left side and details are displayed on the right side) blink and the compressor stops
running. There are 2 types of screens for shutdown: SHUTDOWN and FAILURE.
㻞㻜㻝㻠䠋㻜㻝䠋㻜㻝 㻝㻥䠖㻝㻥 㻖
㼀㼅㻼㻱䠖㼂㻿㻰㻭 㼀㼁
㻰 㻵 㻿䠊㻼㻾㻱㻿㻿 䠖 㻠 㻢㼜 㼟 㼕
䠘㻿 㻴 㼁 㼀 㻰 㻻 㼃 㻺䠚
㻯㻻㻻 㻸 㻭㻺 㼀 䠖
㻻㻵㻸䠖
㻞䠪㻰 㻌 㻿㼁㻯㼀䠊㼀㻱㻹㻼
㻴㻵㻳㻴 㻌㻰㻵㻿䠊㼀㻱㻹㻼䠖
㻌
㻯 㻻 㻺 㼀 㻭 㻯 㼀 㻻 㻾 㻌㻱 㻾 㻾 䠖
㻻㼂㻱㻾㻸㻻㻭㻰 䠖
㻸㻻㼃 㻌 㼃䠊 㻵 㻺 㼀㻿 㼀 㻳
㻹
㻌 㻼䠊
㻭㻵㻺
㻰 㻾 㼅 㻱 㻾 㻌㻌㻌㻌 㼃 䠋 㻻 㻌 㻿 㻱 㻼 䠊
㻱㻸㻱㻹㻱㻺㼀
㻼 㼞 㼑 㼟 㼟㻾㻱㻿 㻌 㼍 㼒 㼠 㼑 㼞 㻌 㻯㻴㻷䠊
②Take the proper corrective action, and press the RESET button.
For further information, 4.1
NOTE) Malfunction detection of water failure is available for only water cooled single stage compressor. Malfunction
detection of dryer is available for only built-in dryer types. Malfunction detection of oil water separator and
element is not available.
(Example)
When the air compressor stops running with blinking FAILURE
and TEMP.SNSR ERR, the temperature sensor 1 is
disconnected
㻞㻜㻝㻠䠋㻜㻝䠋㻜㻝 㻝㻥䠖㻝㻥 㻖
㼀㼅㻼㻱 䠖 㼂㻿㻰㻭㻌 㻌㻌 㻌㻌㻌
㻰 㻵 㻿䠊㻼㻾㻱㻿㻿 䠖 㻠 㻢㼜 㼟 㼕
䠘㻲 㻭 㻵 㻸 㼁 㻾 㻱䠚
㻿㼅㻿㼀㻱㻹 㻱㻾㻾䠖
㻿㼅㻿㼀㻱㻹㻌 㻾㻱㼀㻾㼅
㻼㻯㻮 㻌 㻱㻾㻾䠖
㻼㻾㻱㻿㻿䠊㻿㻺㻿㻾 㻌 㻱㻾㻾䠖
㼀㻱㻹㻼䠊㻿㻺㻿㻾 㻱㻾㻾䠖 㻝
㻰䡅 㼟㼏㼛㼚㼚㼑㼏㼠 㼜㼛㼣㼑㼞
㼟㼚㼐 㼏㼛㼚㼠㼍㼏㼠
㼐 㼕 㼟㼠 㼞 䡅 㼎㼡㼠 㼛㼞
㻞㻜㻝㻠䠋㻜㻝䠋㻜㻝 㻝㻥䠖㻝㻥 㻖
㼀㼅㻼㻱 䠖 㼂㻿㻰㻭㻌 㻌㻌 㻌㻌㻌
㻰 㻵 㻿䠊㻼㻾㻱㻿㻿 䠖 㻠 㻢㼜 㼟 㼕
䠘㻼 㻾 㻻 㻮 㻸 㻱 㻹䠚
㻯㻻㻺㻺㻱㻯㼀 㻵 㻻㻺 㻌 㻱㻾㻾䠖㻌 㻌 㻌
㻾㼑㼏㼛㼚㼚㼑㼏㼠 㻌㼜㼛㼣㼑㼞䠊
㻹㼁㻸㼀 䠥 㻙㼁 㻿㻱㼀 㻱㻾㻾
㻿㻯㻴㻱㻰㼁㻸㻱 㻌 㻿㻱㼀 㻌 㻱㻾㻾
㻯㻻㻹䠊㻱㻾㻾㻌㻿㼀㻻㻼䠖㻌㻌㻌㻌㻌
㻯㻻㻹䠊㻱㻾㻾㻌㻭㻸㻹䠖 㻌㻌㻌㻌㻌
㻮㻭㼀㼀㻱㻾㼅 㻌㻻㼁㼀
㻼 㼞 㼑 㼟 㼟 㻾㻱㻿 㼍 㼒 㼠 㼑 㼞 㻯 㻴㻷䠊
㻞㻜㻝㻠䠋㻜㻝䠋㻜㻝 㻝㻥䠖㻝㻥 㻖
㼀㼅㻼㻱 䠖
㼂
㻿㻰㻭㻌 㻌㻌 㻌㻌㻌
㻰 㻵 㻿䠊㻼㻾㻱㻿㻿 䠖 㻠 㻢㼜 㼟 㼕
䠘㻭 㻸 㻭 㻾 㻹䠚
㻰㻵㻿䠊㼀㻱㻹㻼䠖䠄㻌 㻌 㻌 䠅㻖㻖㻖
䜪㻲
㻻㻵 㻸㻌㼀㻱㻹㻼䠖 㻖㻖㻖䜪㻲
㻸㻻㼃 㻌 㻻䠊㻼䠊䠖 㻖 㻖㼜 㼟 㼕
㻯㻸㼀䠊㼀㻱㻹㻼䠊䠖 㻖㻖㻖
䜪㻲
㻸 㻻㼃 㻌 㻯 㻸 㼀䠊 㻼 䠖 㻖 㻖 㼜 㼟 㼕
㻞䠪㻰 㻙 㻿 䠊 㼀 㻱㻹㻼 㻌 㻲 㻵 㻺 㻙 㼀
㻸㻻㼃 㻌 㼃䠊 㻸㻻㼃 㻌 㻻 㻵 㻸
㻰㻾㼅㻱㻾 㻭 㻵 㻾 㻌㻲㻵 㻸㼀㻱㻾
㻸䠊㻯㻻㼁㻺㼀 㻌 㻻㼂㻱㻾 㻌 㼃䠋㻻 㻌 㻿䠊
㻼㼞㼑㼟䡏㻾㻱㻿 㼍㼒㼠㼑㼞㻌㻯㻴㻷䠊
(Example)
When the ALARM and AIR FILTER blink, it indicates air
intake filter clogs.
(Example)
When the PROBLEM and BATTERY OUT blink, it indicates
the battery replacement period.
(Example)
When the air compressor stops running with blinking
SHUTDOWN and OVERLOAD, it indicates the thermal relay
trip by overload.

18
3. OPERATION PROCEDURE [How to Use the Liquid Crystal Display (LCD)]
■Messages of Automatic Stop Display
When the air compressor stops automatically, the AUTO START light glows or blinks and RESTART display appears.
After the air compressor restarts, monitoring display appears again.
●SCHEDULED STOP: Schedule operation setting
<AUTO light glows>
This indicates that the air compressor has been
automatically stopped by a pre-set time.
The air compressor starts automatically when the pre-
set restart time comes.
●LEAD/LAG OPERATION STOP (option)
< AUTO light glows >
This indicates that the air compressor is waiting for
starting as a slave unit in a two-unit-alternate operation
or a backup operation.
●DRYER PRESTARTED (Built-in dryer type)
<AUTO light blinks>
This indicates that the dryer has started and air
compressor is waiting for the start. The RESTART
WAIT field shows an expected waiting period until the
air compressor can start in seconds.
●AUTO OPERATION
<AUTO light glows>
This indicates that the air compressor in AUTO
operation has stopped due to the low air demand and
is waiting for restarting when demand is needed. The
RESTART WAIT field shows an expected waiting
period until the air compressor can restart in seconds.
●INSTANT STOP / RETRY (Retry is for only Vtype)
<AUTO light blinks>
For both fixed speed and Vtype, this indicates that the
air compressor has stopped due to an instantaneous
power interruption (IPI). The RESTART WAIT field
shows an expected waiting period until the air
compressor can restart in seconds.
For Vtype, this indicates that the air compressor has
stopped due to the variable speed drive failure and is
waiting for restart as well. The RESTART WAIT field
shows an expected waiting period until the air
compressor can restart in second.
㻞㻜㻝㻠䠋㻜㻝䠋㻜㻝 㻝㻥䠖㻜㻞 㻖
㼀㼅㻼㻱 䠖 㼂㻿㻰㻭㻌 㻌㻌 㻌㻌㻌
㻰 㻵 㻿䠊㻼㻾㻱㻿㻿 䠖 㻠 㻢㼜 㼟 㼕
䠘㻾㻱㻿㼀㻭㻾㼀䠚
㻾 㻱 㻿 㼀 㻭 㻾 㼀 㻭 㼀 䠖 䠆䠆 䠖 䠆䠆
㻾㻱㻿㼀㻭㻾㼀 㼃㻭 㻵 㼀䠖 㻌 㻞㻣䡏
㻺㻻㼃䠈 㻿 㼀㻻㻼 㻼 㻱 㻰 䠞䠵 䠖
㻿㻯㻴㻱㻰㼁㻸㻱 㻿㼀㻻㻼
㻭㼁㼀㻻㻹㻭㼀 㻵 㻯 㻿㼀㻻㻼
㻰㻾㼅㻱㻾 㻼㻾㻱㻿㼀㻭㻾㼀㻱㻰
㻰㼁㻭㻸䠋㻮㻭㻯㻷㼁㻼
㻵 㻼 㻵 㻌 㻾㻱㻿㼀㻭㻾㼀
㻯㼀㻸㻾䠊㻾㻱㼀㻾㼅