Coaire SCROLL CSOF-M3PL/H12 User manual

For proper and safe use of the compressor, please follow all instructions and safety precautions as identified in
this manual, along with general safety regulations and practices.
September, 2012
OILLESS SCROLL AIR COMPRESSORS
MAINTENANCE MANUAL AND PARTS LIST
CSOF-M3PL/H12
CSOF-M3PL/H22
CSOF-M3PL/H32
CSOF-M3PL/H42
CSOF-M5PL/H22
CSOF-M5PL/H32
CSOF-M5PL/H42
CSOF-S8PL/H22
CSOF-S8PL/H32
CSOF-S8PL/H42
CSOF-S10PL/H22
CSOF-S10PL/H32
CSOF-S10PL/H42
All rights reserved Printed in U.S.A.

2
STATEMENT OF WARRANTY TERMS & CONDITIONS
COAIRE’s scroll air compressors are warranted to be free of defects in materials and workmanship u
nder proper use, installation, and application. This warranty shall be for a period of 5 months from date
of shipment from our factory or 2 months from date of installation or 5000 hours run
time after start-up whichever comes first. Proof of installation date will be required. Byers shall fill the st
art-up report out completely and return to the factory to validate warranty. All air compressors
outside the U.S. and Canada carry a parts only warranty.
MAINTENANCE AND ADJUSTMENTS
WARRANTY APPLIES TO COAIRE MANUFACTURED UNITS ONLY. ADJUSTMENTS BELT AND
MAINTENANCE OF PUMP, GREASING PUIMP ARE CONSIDERED TO BE ROUTINE MAINTENANCE AND TH
EREFORE NON-WARRANTABLE ITEMS AND ARE THE SOLE RESPONSIBILITY OF THE END USER.
CONSULT THE INSTALLATION, OPERATION AND MAINTENANCE MANUAL FOR THE ADJUSTMENT
AND MAINTENANCE PROCEDURES.
ALL FREIGHT DAMAGE CLAIMS ARE NOT THE RESPONSIBILITY OF THE MANUFACTURER AND ARE
NOT COVERED UNDER WARRANTY AS ALL PRODUCTS ARE SHIPPED F.O.B. FACTORY. PLEASE DIREC
T ALL FREIGHT CLAIMS TO THE CARRIER.
This warranty does not apply to any unit damaged by accident, modification, misuse, negligence, or
misapplication. Damage to heat exchangers by exposure to ammonia, any other corrosive
substance or sub-freezing environment will be considered misuse.
Any air compressors part or material found defective will be repaired, replaced or refunded, at
the sellers option free of charge, provided that COAIRE is notified within the above stated warranty
period. All returns of allegedly defective equipment must have prior written authorization.
Said authorization may be obtained through our air compressor service department. All air
compressors, parts, materials must be returned freight prepaid to our factory within 30 days of return aut
horization date. Any shipment returned to the factory collect will be refused. If an item is found
to be warrantable, the repaired item or replacement will be returned normal ground freight prepaid
within the continental United States and Canada. Expedited shipment costs are the responsibility of
the requestor. Any replacement part or material is warranted only to the extent of the remaining
warranty period of the air compressor or to the extent as provided by the supplier, whichever is
longer.
IDENTIFICATION PLATE
The identification plate is located on the cabinet of the air compressor and shows all the primary dat
a of the machine. Upon installation, fill in the table on your instruction manual with all the data shown on
the identification plate. This data should always be referred to when calling the manufacturer or distribut
or. The removal or alteration of the identification plate will void the warranty rights.
DISCLAIMER
The warranty does not cover any responsibility or liability for direct or indirect damages to
persons, or equipment caused by improper installation, usage or maintenance, and is limited to
manufacturing defects only. Refer to COAIRE Warranty policy manual for travel, mileage and special
Charge considerations. The warranty will be immediately voided if there are changes or alterations to the
air compressor.
WHO TO CONTACT IF YOU HAVE A WARRANTY CLAIM:
COAIRE, Division of Quietside Corporation Phone [phone]
Fax [phone]
e-mail : [email protected]
8750 Pioneer Blvd., Santa Fe Springs, CA 90670
All freight damage claims should be filed within 5 working days and should be directed to the carrier.
WARRANTY

3
1.0 Table of contents -------1 7.0 Control
7-1 Controller ------21
2.0 Safety and warnings 7-2 Major functions ------21
2-1 General -------2 7-3 Configuration of functions ------22
2-2 Safety caution -------2 7- Error messages ------28
2-3 Safety and warnings -------3
8.0 Maintenance
3.0 General 8-1 Scheduled Maintenance (L) ------29
3-1 Specification -------5 8-2 Scheduled Maintenance (H) ------30
3-2 Major component -------6 8-3 Maintenance ------31
3-3 System diagram -------8
9.0 Trouble Shooting ------35
.0 Installation
-1 Inspection ------10 10.0 Outline drawings
-2 Handling ------10 10-1 CSOF-M3PL(H), CSOF-M5PL(H) ------39
-3 Installation ------11 10-2 CSOF-S8PL(H), CSOF-S10PL(H) ------ 0
- Requirements for the piping ------12
-5 Wiring ------13 11.0 Electrical wiring drawings
11-1 CSOF-M3PL(H), CSOF-M5PL(H) ------ 1
5.0 Operation 11-2 CSOF-S8PL(H), CSOF-S10PL(H) ------ 2
5-1 Commissioning ------16
5-2 Routine operation ------17
6.0 Functional descriptions
6-1 Airend ------19
6-2 Motor ------19
6-3 Fan ------20
6- Cooler ------20
6-5 Suction filter ------20
6-6 Check valve ------20
CONTENTS
1.0 Table of contents

4
2.0 Safety and Warning
1) The air compressor shall only be operated by a person who has been trained in a safe operation.
2) Please read and be familiar with the user’s manual and the safety instructions before using the air
compressor.
3) The scroll air compressor alone cannot be used for a respiratory system, food and medical equipment
under any circumstance.
) Do not leave inflammables and explosives near the air compressor.
5) Make sure to use only the genuine Coaire parts. Other types of replacement may cause a serious
failure.
6) The equipment shall safely be operated in compliance with all safety requirements and regulations.
Caution is used to indicate the presence of a hazard which will or can cause
minor personal injury or property damage if the warning is ignored.
Warning is used to indicate the presence of a hazard which can cause severe
personal injury, death, or substantial property damage if the warning is ignored.
Danger is used to indicate the presence of a hazard which will cause severe
personal injury, death, or substantial property damage if the warning is ignored.
Hazardous voltage. Can cause severe injury or death.
Only use factory supplied for incoming power. See Operators/Instruction manual.
Moving parts. Can cause severe injury.
Do not operate with covers removed.
Service only with machine blocked to prevent turn over.
High pressure air. Can cause severe injury or death.
Relieve pressure before removing filter plugs/caps, fitting or covers.
Please install the product in areas free of explosives (acetylene, propane gas, etc)
or flammable substances. In case of operating the product in flammable
environment, fire or explosion could be caused.
Hot surface. Can cause severe injury.
Do not touch. Allow to cool before servicing.
2-1 General
2-2 Safety Caution
 The user assumes full responsibility for any problem associated with the non-compliance with the
instructions in the user’s manual.
CAUTION
WARNING
ANGER
SAFETY AND WARINGS

5
2-3 Safety and Warnings
2-3-1 CSOF-M3PL(H) , CSOF-M5PL(H)
SAFETY AND WARINGS
WILL CAUSE INJURY OR
DEATH.
HAZARDOUS VOLTAGE INSIDE.
SHUT OFF POWER.
WILL SHOCK, CAUSE INJURY OR
DEATH.
DO NOT TOUCH!
HOT SURFACE.
HIGH PRESSURE. SAFETY DEPRESSURE
THE COMPRESSED AIR. FLYING PARTS
FROM COMPRESSED AIR CAN CAUSE
INJURY OR DEATH.
COMPRESSED AIR FROM THIS MACHINE
CONTAINS OIL MIST WHICH MAY CAUSE
SEVERE NAUSEA, INJURY OR DEATH.
NEVER USE AIR FROM THIS MACHINE
TO SUPPLY BREATHING AIR AND KEEP
UNIT IN A WELL-VENTILATED AREA.
DO NOT TOUCH!
HOT SURFACE.
WILL CAUSE INJURY.
[ Fig. 2-2 ] Rear Side
[ Fig. 2-1 ] Front Side

6
DO NOT TOUCH!
HOT SURFACE.
DO NOT TOUCH!
HOT SURFACE.
WILL CAUSE INJURY OR
DEATH.
HIGH PRESSURE. SAFETY
DEPRESSURE THE COMPRESSED AIR.
FLYING PARTS FROM COMPRESSED
AIR CAN CAUSE INJURY OR DEATH.
COMPRESSEDAIRFROMTHISMACHINE
CONTAINSOILMISTWHICHMAYCAUSE
SEVERE NAUSEA, INJURY OR DEATH.
NEVER USE AIR FROM THIS MACHINE
TOSUPPLYBREATHINGAIR AND KEEP
UNIT IN A WELL-VENTILATED AREA.
WILL CAUSE INJURY OR
DEATH.
[ Fig. 2- ] Rear Side
[ Fig. 2-3 Front Side
2-3-2 CSOF-S8PL(H) , CSOF-S10PL(H)
SAFETY AND WARINGS

7
3-1 Specification
 Note.
1. Noise level is the measurement from acoustic room.
2. The size is the size of the external design of the package. Protruding areas such as discharge ball valve
have been excluded in the measurement.
Model CSOF-M3PL(H) CSOF-M5PL(H) CSOF-S8PL(H) CSOF-S10PL(H)
UNIT
Type Single Stage Oil Free Scroll Air Compressor
Air
Delivery
(cfm)
115 psi 8.5 1 .1 22.6 28.3
1 0 psi 7.2 12 19.2 2
Driving
Method Belt 3V-360x2EA 3V-380x2EA 3V-380x2EA 3V- 05x2EA 3V- 05x EA
High temp. stop () 176
MOTOR
Output ( kW/HP ) 2.2/3 3.7/5 2.2/3 x 1SET
3.7/5 x 1SET 3.7/5 x 2SET
Voltage ( V ) 208-230, 60
Frequency ( Hz ) 60
Poles
Starting Method DIRECT ON LINE
GENERAL
Air Outlet (Inch) 1/2” 1”
Receiver Tank (gal) 10 Over 16
(Option)
Over 21
(Option)
Cooling Type Air Cooled
Service air temp. () Intake air temperature + 5
Ambient temp. () Max. 10
Noise Level [dB(A)] 9±5 50±5 52±5 53±5
DIMENSION
Length (Inch) 27.5” 25.6”
Width (Inch) 29.1” 5.7”
Height (Inch) 2.1” 51.2”
Weight (Lbs) 275 330 536 587
GENERAL
3.0 General

8
3-2 Major Component
3-2-1 CSOF-M3PL(H), CSOF-M5PL(H)
#. D SCRIPTION
1. COMMON BASE
2. COVER & FRAME
3. AIREND
. MOTOR
5. MOTOR PULLEY
6. AIREND PULLEY
7. SUCTION FILTER
8. AIR RECEIVER TANK
9. AIR DELIVERY PIPE
10. AIR COOLER
11. COOLING FAN
12. CONTROLLER
13. CONTROL BOX
1 . V-BELT
15. CHECK VALVE
16. SAFETY VALVE
17. DRAIN VALVE
18. PRESSURE TRANSMITTER
GENERAL
[ Fig.3-1 ] Outline View
[ Fig.3-3 ] Rear View
[ Fig.3-2 ] Front View
12
13
1
10
11
5
14
6
2
3
74
8
18
17
15
16
9

9
3-2-2 CSOF-S8PL(H), CSOF-S10PL(H)
[ Fig.3-6 ] Rear View [ Fig.3-5 ] Right View
#. D SCRIPTION
1. COMMON BASE
2. COVER & FRAME
3. AIREND
. MOTOR
5. MOTOR PULLEY
6. AIREND PULLEY
7. SUCTION FILTER
8. AIR DELIVERY SOCKET
9. AIR DELIVERY PIPE
10. AIR COOLER
11. COOLING FAN
12. CONTROLLER
13. CONTROL BOX
1 . V-BELT
15. CHECK VALVE
16. SAFETY VALVE
17. DRAIN VALVE
18. PRESSURE TRANSMITTER
GENERAL
1
13
2
2
3
4
5
6
7
8
9
10
11
12 19
14
15
16
17
18
[ Fig.3- ] Left View

10
3-3 System Diagram
3-3-1 CSOF-M3PL(H), CSOF-M5PL(H)
The CSOF-M Series are an oil-free scroll air compressor. In an operation, a main motor is run to
initiate the compression at an airend. The external air is filtered through a suction filter before
entering into the airend. The compressed air is stored into an air tank via a check valve (non-return
valve). The temperature of the compressed air discharged from the airend is at least 392. The air
is primarily cooled in an air tank, and secondarily via an air cooler before being discharged. The
saturated vapor phase compressed air condenses into a water that can manually be discharged via
a drain valve in the air tank.
There are following four safeguards in CSOF-M3PL(H) and CSOF-M5PL(H) models:
1) Over Current Relay (OCR) for Motor – Detects the over current of the motor to stop the
compressor.
2) Mechanical Safety Valve – Mechanically discharges the compressed air in the air tank to the
air, if the air pressure exceeds the set value. The compressor shall manually be stopped.
3) Temperature Sensor (Temperature Transmitter ) – Detects the temperature exceeding the set
value (176) at the bottom of the airend to stop the compressor.
4) Pressure Sensor (Pressure Transmitter ) – Detects the pressure in the air tank and sends the
value to the controller to stop the compressor, if the air pressure exceeds the set value.
[ Fig.3-7 ] System Diagram
GENERAL

11
3-3-2 CSOF-S8PL(H), CSOF-S10PL(H)
[ Fig.3-8 ] System Diagram
The basic principle of the CSOF-S8PL(H) and CSOF-S10PL(H) is equal to that of CSOF-M3PL(H)
and CSOF-M5PL(H). However, the CSOF-S8PL(H) and CSOF-S10PL(H) have two airends to
sequentially be started up depending on the load to be used. As there is no air tank in the
compressor, a drain valve is used on the discharge end to drain the condensate water generated
during the compression. For the CSOF-S8PL(H) or above, an air receiver tank shall separately be
ordered and installed by the amount of air used. The tank capacity varies depending on the load
to be used, for example, minimum capacity is 16gal for the CSOF-S8PL(H), and 21gal for the
CSOF-S10PL(H).
There are following four safeguards in CSOF-S8PL(H) and CSOF-S10PL(H) models:
1) Over Current Relay (OCR) for Motor – Detects the over current of each motor to stop only the
motor failed.
2) Mechanical Safety Valve – Mechanically discharges the compressed air in the air tank to the
air, if the air pressure exceeds the set value. The compressor shall manually be stopped.
3) Temperature Sensor (Temperature Transmitter ) – Detects the temperature exceeding the set
value at the bottom of each airend to stop only the motor failed.
4) Pressure Sensor (Pressure Transmitter ) – Detects the pressure in the air tank and sends the
value to the controller to stop the compressor, if the air pressure exceeds the set value.
GENERAL

12
INSTALLATION
4.0 Installation
4-1 Inspection
When you receive the compressor please inspect it closely.
Upon delivery, carefully check the compressor for damage
during transportation.
If goods are received in damaged condition, it is important
that you notify the carrier and insist on a notation of loss or
damage across the freight bill.
[ Fig. -1 ] Name plate
4-2 Handling
-2-1 Handling by a forklift
When handling by a forklift, make sure that forks completely extend through the width of the unit. (Fig. -2)
-2-2 Handling by a shop crane
When handling by a shop crane, use the openings provided on common base where slings or steel wire
ropes can be use for lifting. (Fig. -3)
[ Fig. -2 ] [ Fig. -3 ]

13
4-3 Installation
-3-2 Ventilation
-3-1 Where to Install
Poor ventilation in the compressor room may raise the temperature of the air discharged.
If the room temperature exceeds 18 more than the outside temperature, sufficiently ventilate
the air in the room(see Table -1), and install the exhaust duct, if necessary.
Coaire air compressor is designed for the indoor use. The ventilation facility and piping affect
the performance and the service life of the compressor. Please follow the instructions in the user’s manual.
[ Fig. - ] Installation of the Air Compressor
INSTALLATION
MIN. 1000mm [39.4"]
MIN. 1500mm [59"] MIN. 2000mm [78.8"]
Max. V=3m/s
Max. V=5m/s
EMERGENCY
STOP
[ Fig. -5 ] Installation of the Exhaust Duct

14
-3-3 Selection of Where to Install
Item Description
Place - Do not install the compressor unit on the outside.
- Please keep warm during the winter season, if you have to install on the outside.
Space
- Keep the space of more than 31.5inch from the wall to facilitate the repair and
maintenance of the compressor
- Do not place any object in front of the door.
Floor and
Foundation
- The floor shall sufficiently holds the weight of the compressor.
- The floor surface shall be flat with a gradient less than 1 degree to minimize
the vibration.
- It is recommended to install the compressor inch above the floor, though
Coaire air compressor generates an insignificant amount of vibration.
Room
Temperature
- Optimal ambient temperature is 32~10  during the operation.
- Install the compressor at low temperature and moisture, if possible.
 Each 18 increase of the inlet temperature reduces the efficiency of the
compressor by 3- %.
Hazardous
Substances
- Install the compressor at the place where there is the least noxious gas,
hazardous substance and dust. Those foreign substances may cause the damage
of the air compressor.
Electricity - The electric power shall have at least 150% of the reference margin.
- The range of fluctuation in voltage shall be within ±10%.
Ventilation
- A ventilation fan shall be installed to forcedly ventilate the room, if the room
temperature exceeds 18 more than the outside temperature in the summer.
- For an exhaust duct, set the velocity at 5 m/s, and the static pressure at less than
5 mmAq.
- Install a protective net on the exhaust outlet to prevent birds, rodents and
foreign substances from entering..
- Place the inlet as low as possible.
[table -2] Requirements for Where to Install
INSTALLATION
Model Air Volume
[ ft³/min = CFM ]
Hood Size
[ Inch x Inch ]
CSOF-M3PL(H), CSOF-M5PL(H) 1060 11.8” x 23.6”
CSOF-S8PL(H), CSOF-S10PL(H) 2120 15.8 “ x 31.5”
[ Table -1 ] Ventilation Fan Capacity

15
4-5 Wiring
1) Extremely low or high voltage power supply may cause the failure of the compressor. Low power
capacity also causes significant voltage drop when starting up the compressor. The compressor
requires at least 85% of the rated voltage for a start-up, which shall be maintained within ±10% of
the rated voltage during the operation. The inter-phase voltage imbalance shall be within 2%, not
exceeding 3% even in a special case.
2) Features and Capacity
See Table - Electrical Specification for an appropriate electric power, an operating current and a
starting current. Considering that the discharge air pressure abnormally exceeding the rated
operating pressure increases the operating current, wiring shall allow about 120% of the rated
capacity of a main transformer.
3) See Table - Electrical Specification for the electric power [kW] and the power factor [%].
) Minimum Capacity of Transformer [kVA] = {Electric Power [kW] / Power Factor [%]} x 100 x 1.2
5) Longer lead-in wiring of the main power may cause the compressor failed or tripped during the
start-up due to the voltage drop in the line. Select the thickness of the cable so that it maintains at
least minimum starting voltage.
6) The calculation of the voltage drop based on the line length is as follows:
3-Phase 3-Line Type Connection:
Where,
I = Current [A] A = Cross Section of Cable [mm2] e = Voltage Drop [V] L = Length of Cable [M]
INSTALLATION
- Requirements for the Piping
1) Use a larger diameter and install the pipe without an excessive bending to reduce the pressure
drop.
2) Always place a branch pipe on the top of a main pipe to reduce the discharge of oil or water.
3) For the compressed air pipes, reduce the number of sections bending and connecting, and the
number of valves installed to reduce the pressure loss.
) The increased pressure loss requires a high discharge pressure of the air compressor.
Consequently, it causes the power loss. The water stays wherever the pipe is sagging to increase
the pipe resistance, which may cause winter-sowing. Thus, consider the pipe straightness when
installing the pipes.
5) Install a bypass piping on each equipment for a maintenance.
6) A scroll air compressor has a check valve in the system. Installing more check valves between the
compressor and the air receiver tank may cause a malfunction of the compressor.
7) Always install a drain valve on the bottom of a vertical pipe for the prevention of a winter-sowing.
e = 30.8 x L x I
1000 x A

16
[ Table -3 ] Type of Grounding
7) It is recommended that the thickness of the cable shall allow more than the minimum requirement
specified for a power condenser, and the length of the cable shall be within 1.5 m. No wiring is
necessary if there is a power condenser with a sufficient capacity in the bus conductor.
8) Leave intact the factory specification of the overcurrent protection device. If the change is
unavoidable, keep the set values within the range specified in the user’s manual. The cable shall
allow more than the minimum requirement specified.
9) As the operating current varies depending on a given condition, it is recommended to allow about
20% extra.
10) Install a circuit breaker in the main power to protect the motor. The circuit breaker shall have a
built-in electric leak breaker.
11) Use the ground terminal on a motor or a control box to earth the equipment.
Type Ground Resistance
Thickness of
Grounding
Conductor
Application
1st-Class Grounding 10Ω 2.6 mm2 or above High Voltage Equipment
2nd-Class Grounding 150Ω/1-Line Ground
Current or below 2.6 mm2 or above Neutral Point of Transformer
3rd-Class Grounding 100Ω 1.6 mm2 or above Equipment with Low Voltage
Less than 00 V
Special 3rd-Class
Grounding 10Ω 1.6 mm2 or above Equipment with Low Voltage More than 00V
INSTALLATION
Causion
1) As the grounding on a steel structure of the building may cause the failure of the operation,
always earth on the ground. The maximum allowable length of the grounding conductor is 20 m.
2) If there is a risk of inductive interference on an electronic calculator or a telecommunication
equipment, install a surge killer on the magnetic switch used.
3) The compressor has a complete wiring inside, and no separate wiring or maintenance is necessary.
If any maintenance is needed, see the circuit diagram in the user’s manual provided with the
compressor.

17
[ Table - ] Electrical Specification(3 Ph)
Model
(Poles)
Voltage Output Input D iving
Cu ent
Sta ting
Cu ent MCCB OCR
Main
Powe
Cable
G ound
[V] [kW] [kW] [A] [A] AF
[A]
TRIP
[A]
SET
[A] AGW GV []
CSOF-
M3PL(H)
(4P)
208-230
2.2 2.84
8.4 63.8 30 15 10 15 2.5
460 4.2 32.3 30 10 5 15 2.5
CSOF-
M5PL(H)
(4P)
208-230
3.7 4.53
14-13.2 93.8 30 20 15.8 15 2.5
460 6.6 44.8 30 15 7.9 15 2.5
CSOF-
S8PL(H)
(4P)
208-230
2.2 /
3.7
2.84 /
4.53
8.4
/
14-13.2
63.8
/
93.8
50 40
10
/
15.8
11 4
460
4.3
/
6.6
32.3
/
44.8
30 20
5
/
7.9
15 2.5
CSOF-
S10PL(H)
(4P)
208-230
3.7
X
2EA
4.53
X
2EA
14-13.2
X
2EA
93.8
X
2EA
50 50
15.8
X
2EA
9 4
460
6.6
X
2EA
44.8
X
2EA
30 30
7.9
X
2EA
15 2.5
INSTALLATION

18
OPERATION
5-1 Commissioning ( Initial Operation )
5.0 Operation
[ Fig 5-1 ] Control Button
5-1-1 Structure of the Controller
1) Check if the voltage of the main power is within a normal range specified.
2) Cut the main power to connect the power line to the control panel.
3) Check the connection of pipes, a power supply and a grounding.
) Fully open a stop valve on the discharge pipe of the compressed air.
5-1-2 Checklists before the Commissioning
5-1-3 Commissioning
1) Push the “START” button on the controller to check the direction of rotation. If it is operated in a
negative phase, immediately push the emergency stop button, turn the main power off, and then
convert “R” into “T” before restarting. When the compressor starts, the pressure is increased in the
airend to start the compression.
2) With the discharge valve closed on the discharge side of the air tank, check if the compressor is
automatically stopped, when the pressure reaches the set value.
3) Check if there is any abnormal vibration, noise and leakage.
) Push the “STOP” button on the controller.
Reset Cancel Down nter Up Menu
monitor
Start
Stop

19
OPERATION
[ Table 5-1 ] Operation Parameters
Section Model CSOF-M3PL(H), CSOF-M5PL(H), CSOF-S8PL(H), CSOF-S10PL(H)
Setting Pressure psi 115(Low pressure) / 1 0(High pressure)
Difference Pressure psi Stop : 115(Low pressure) / 1 0(High pressure)
Re-start : 93(Low pressure) / 120(High pressure)
High temp. stop  176 ( @ Airend )
Starting Method D.O.L
5-2 Routine Operation
5-2-1 Checklists before the Operation
1) Connect the main power to check the display on the monitor.
2) Push the “START” button on the controller to check if the compressor is well started up, and the
indicator lamps are normally on.
3) Check if there is any abnormal vibration, noise and leakage.
) Check if the operation is in good condition at the maximum load.
Check the following conditions before starting the operation.
Discharge
Pressure
Comp.
Temp
Alarm Message
Lock
Symbol
Operate Status
Target
Pressure

20
Section Regulation Re-mark
Airend Temp. Max. 176(@Airend)
Amb. Temp. 32~10 
Lamp on during the operation Sart
Input voltage ±10% of rated voltage
Pressure gap of unit and discharge Max. 7.25 psi
5-2-2 Start-Up
1) Check if the tank pressure is 0 psi.
2) Check if the monitor indicates a normal condition for the operation, and then push the “RUN” button.
3) Fully open the valve on the discharge side before starting the compressor.
) Check if there is any abnormal noise, and the operation is in good condition.
5-2-3 During the Operation
1) With a full load, check the values indicated by the instruments. Also check if the indicator lamps are
normally on in the control panel.
2) Pull the ring on the safety valve every 500 hours to check if the operation is normal.
[ Table 5-2 ] Checklists During the Operation
1) Push the “STOP” button.
2) Turn the main power off.
3) Check if the internal pressure is completely discharged from the compressor.
5-2- Stop
Regularly record the information about the operation events in the operation log to early find the failure
of the compressor and to prevent the accident before happens. The information includes the discharge
pressure, operating time, maintenance items and the time to replace the parts. There is a sample
operation log attached in the user’s manual.
5-2-5 Operation Log
1) It is extremely hazardous to disassemble the valves or pipes from the compressor system during
the operation.
2) Always check if the pressure is 0 psi in the tank before disconnecting the valves or pipes.
3) Since the tank is still hot for a certain time even after the operation is stopped, there is a danger
of burns if you are not careful.
) The rotating parts in the compressor is extremely dangerous during the operation.
Do not come near the parts until the compressor is stopped and the main power is turned off.
Warning
OPERATION