Coaire CSOF-S3PL(H) User manual

COAIRE, Div. of Quietside Corporation
8740 Pioneer Blvd., Santa Fe Springs, CA 90670 • Tel [phone] Fax [phone]
www.coaire.com • [email protected] / [e-mail]
“...together we achieve the extraordinary...”
Printed in U.S.A.All rights reserved.
CSOF-S0710

OILLESS SCROLL AIR COMPRESSOR
Maintenance Manual
and Parts List
CAUTION
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.
SERIAL NO. MODEL NO.
MODELS
CSOF-S3PL(H)
CSOF-S5PL(H)
COAIRE, Div. of
Quietside Corporation

COAIRE, Div. of Quietside Corporation
1
Before you install the air compressor you should take the time to carefully read all the instructions contained in this
manual. Electricity and compressed air have the potential to cause severe personal injury or property damage. Before
installing, wiring, starting, operating or making any adjustments, identify the components of the air compressor
using this manual as a guide. The operator should use common sense and good working practices while operating
and maintaining this unit. Follow all procedures and piping accurately. Understand the starting and stopping
sequences. Check the safety devices in accordance with the following procedures contained in this manual.
Maintenance should be done by qualified personnel, accurately with proper tools. Follow the maintenance schedule
as outlined in the manual to ensure problem free operation after start up.
BEFORE INSTALLING THE COMPRESSOR OR PERFORMING
ANY MAINTENANCE READ THIS MANUAL CAREFULLY.
WARNINGS
COMPRESSED AIR AND ELECTRICITY ARE DANGEROUS. BEFORE DOING ANY WORK ON THIS UNIT, BE SURE THE
ELECTRICAL SUPPLY HAS BEEN SHUT OFF(LOCKED AND TAGGED) AND THE ENTIRE COMPRESSOR SYSTEM HAS
BEEN VENTED OF ALL PRESSURE.
1. Do not remove the cover, loosen or remove any fittings, connections or devices when this unit is operating or
in operation. Hot liquid and air that are contained within this unit under pressure can cause severe injury or
death.
2. The compressor has high and dangerous voltage in the motor, the starter and control box. All installations
must be in accordance with recognized electrical procedure. Before working on the electrical system, ensure
that the system's power has been shut off by use of a manual disconnect switch. A circuit breaker or fuse
switch must be provided in the electrical supply line to be connected to the compressor. The preparation work
for installation of this unit must be done on suitable ground, maintenance clearance and lightning arrestors
for all electrical components.
3. Do not operate the compressor at a higher discharge pressure than those specified on the compressor
nameplate. If so an overload will occur. This condition will result in electric motor compressor shutdown.
4. Use only safety solvent for cleaning the compressor and auxiliary equipment.
5. Install a manual shut off valve(isolation type) in the discharge line for service work.
6. Whenever pressure is released through the safety valve during operation, it is due to excessive pressure in the
system. The cause of excessive pressure should be checked and immediately corrected.
7. Before doing any mechanical work on the compressor,
a) Shut down the unit.
b) Electrically isolate the compressor by use of the manual disconnect switch in the power line to the unit.
Lock and tag the switch so that it cannot be operated.
c) Release all compressed air within the system and isolate the unit from any other sources of air.
8. Allowing the unit lubricants to enter into the plant air system must be avoided at all times. Air line separators,
which are properly selected and installed, can reduce any liquid carry-over close to zero.
9. Before starting the compressor, the maintenance instructions should be thoroughly read and understood.
10. After maintenance work is completed, covers must be securely closed.
11. For questions contact your distributor before proceeding.
SAFETY AND PRECAUTIONS
SAFETY AND PRECAUTIONS

COAIRE, Div. of Quietside Corporation
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COAIRE’s oilless scroll compressors are warranted to be free of defects in materials and workmanship under
proper use, installation, and application. This warranty shall be for a period of 15 months from date of
shipment from our factory or other stocking facilities or 12 months from date of installation. Proof of
installation date will be required. All air pumps outside the U.S. and Canada carry a parts only warranty.
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. SHIPPER.
PLEASE DIRECT ALL FREIGHT CLAIMS TO THE SHIPPER IN QUESTION.
MAINTENANCE AND ADJUSTMENTS
This warranty does not apply to any unit damaged by accident, modification, misuse, negligence, or
misapplication. Damage to pumps by exposure to ammonia, any other corrosive substance or sub-freezing
environment will be considered misuse.
Any air pumps, 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 service department. All air pumps, parts, materials must be returned freight prepaid
to the Manufacturer’s factory within 30 days of return authorization 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
dryer or to the extent as provided by the supplier, whichever is longer.
IDENTIFICATION PLATE
The identification plate is located on the side of the air pumps and shows all the primary data of the pump.
Upon installation, fill in the table on the previous page with all the data shown on the identification plate.
This data should always be referred to when calling the manufacturer or distributor. 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 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 compressor.
STATEMENT OF WARRANTY TERMS & CONDITIONS
WHO TO CONTACT IF YOU HAVE A WARRANTY CLAIM:
COAIRE, Div. of Quietside Corporation
(888)7coaire, 726-2473 • Phone [phone] • Fax [phone]
8740 Pioneer Blvd., Santa Fe Springs, CA 90670
All freight damage claims should be filed within15 working days and should be directed to the carrier

COAIRE, Div. of Quietside Corporation
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1. CAUTIONS ...................................................................................... 4
2. BASIC SPECIFICATION ................................................................... 5
2.1 General Data .................................................................................... 5
2.2 Compressor Outside View ................................................................ 6
3. INSTALLATION, WIRING AND PIPE PRECAUTIONS ............................ 7
3.1 Product Check ................................................................................. 7
3.2 Machine Movement ........................................................................ 7
3.3 Installation ....................................................................................... 7
3.4 Ventilation Condition ....................................................................... 8
3.5 Piping .............................................................................................. 9
3.6 Wiring .............................................................................................. 11
4. OPERATION METHOD ..................................................................... 12
4.1 Trial Operation .............................................................................. 12
4.2 General Operation ........................................................................... 15
5. COMPRESSOR STRUCTURE ................................................................. 16
6. PERIODIC CHECK UP AND MAINTENANCE ........................................ 17
6.1 Maintenance Standard ..................................................................... 17
6.2 Inspection Method .......................................................................... 19
7. CAUSES AND REMEDIES FOR DAMAGE .......................................... 21
8. Wiring diagram
.................................................................................. 22
9. REPAIR and MAINTENANCR PARTS .................................................... 24
WARRANTY CLAIM REPORT ...................................................................... 25
STARTUP REPORT ....................................................................................... 26
CONTENTS

COAIRE, Div. of Quietside Corporation
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Please be Please be aware of the dangers that can be caused. If the
danger can not be prevented, loss of life or injury can be caused.
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 can be caused.
Please make sure the circuit breaker has been powered down before
inspection or repairing or maintenance work. If you perform inspection
or repair without powering down the circuit breaker, electric shock or
injury can occur. When connecting power, make sure to use Crimp-Type
terminal. Please check the connecting area and supply power after all
procedures have been completed. Always comply to the National
Electric Code and any local requirements.
When the circuit breaker is turned on during the operation, do not
touch the rotating parts (fan, pulley, belt, etc). Your hand may get stuck
to the product. When the compressor is operating, the product will be
operated or stopped automatically based on the pressure. Please be
aware of the danger.
Compressed air has great power. Flying parts can cause serious injury.
Before stopping the compressor, always make sure to turn off the main
power and eliminate the pressure of all elements related to the
compressor or pipes.
In closed space, install compressor ventilation fan and maintain the
ambient temperature below 104’F (40°C) and please make sure the
average temperature is below 85’F (30°C). Please install the product in
areas free from direct sunlight, rain, dust, corrosion or toxic gas.
Operating in inappropriate areas can cause product deterioration or
damages.
When opening the door or disassembling the panel for inspection, repair
or maintenance during or after operation, do not touch the product
directly. And do not insert flammable substance in hot areas such as
discharge pipe, after-cooler, basic compressor, etc. There can be danger
of fire or burns.
Do not modify the compressor. Do not use the product for purpose
other than air compression. Product can deteriorate or be damaged.
Please use standard parts for parts replacement related to the
compressor repair. Consult your distributor
1. CAUTIONS

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2.1 General Data
2. BASIC SPECIFICATION
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 had been excluded in the measurement.

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2.2 Compressor Outside View
<Fig. 1>

<Fig. 3> <Fig. 4>
3.1 Product Check
1. Please check whether the product you have received is the one you have ordered.
2. Please check for loosened bolts or nuts in each part.<Fig. 2>
3.2 Machine Movement
3.2.1 Use Forklift or Hand Car
When moving the product using the forklift or hand car, please protect the product using
cushioning to prevent external damage. Check if the fork has been inserted completely into
the hole before moving. <Fig. 3>
3.2.2 Using the Crane
Protect the product from direct contact with chain or rope on the external cover before moving.
<Fig. 4>
3.3 Installation
3.3.1 Installation Precautions
Our compressor is for indoor use. Sufficient size of room where it is easy to inspect and
maintain the machine is needed.
 Please select installation location considering below conditions.
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3. INSTALLATION, WIRING AND
PIPING PRECAUTIONS
<Fig. 2>

1) Make sure the location has good air circulation with low temperature and humidity.
- Surrounding temperature must not rise above 104˚F(40°C).
- Ventilation fan must be installed in locations with low ventilation.
2) Please choose a location with little dust.
3) Please choose locations with no toxic fumes.
4) Space needed for inspection and maintenance must be secured.
- For disassembled inspection for compressor, secure enough space as shown in <Fig. 5>.
5) This product has low vibration. Therefore, it may not create negative effect in the surrounding.
However, the ground solidity must be strong enough to endure total weight of the machine.
6) Please make sure the range of voltage change is within 10%.
7) If the noise created is reflected off the wall, the noise may increase compared to the noise of
normal operation.
3.4 Ventilation Condition
- In case of bad indoor ventilation in compression room, the discharge air temperature may rise.
1) Refer to the following table for the ventilation air velocity needed to block 9˚F(5˚C) rise of indoor
temperature. This air flow is the figure for static compression of 0 PSI. Please choose a figure
greater than this figure.
2) When installing ventilation duct, make sure the pressure drop in the room is as low as possible
and please attach ventilation fan in the ventilation area. Also for easy repair and maintenance,
make sure the distance between duct entrance and compressor ventilation hole is 12 inch (300mm)
or more. <Fig. 6>
COAIRE, Div. of Quietside Corporation
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<Fig. 5>

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3) Make sure the duct suction hole is greater than the ventilation size below.
3.5 Piping
To maximize efficiency pipe bends, connections and piping should be kept to a minimum amount. Improper
piping can cause pressure drop and false air compressor demand higher than necessary operating pressures
which increase your operating costs. Moisture in the piping may rupture in freezing temperatures.
Therefore, moisture management must be considered. Please consult your Coaire distributor for proper
installation.
MODEL CSOF-S3PL(H) CSOF-S5PL(H)
FAN AIR FLOW cfm(m
3
/min) 883(25) 1342(38)
<Fig. 6>

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Precautions
1. Make sure the length of the pipe is as short as possible for less pressure drop and reduce
the number of connecting joints such as valve, elbow, etc.
2. Please install drain plug in the lower area of the pipe.
3. Please install bypass pipe on the compressor to facilitate maintenance.
4. There is a check valve installed inside the compressor. Do not install separate check valve in
the pipe. When installed, there can be an error in load-unload information.
5. In cases with varying demand, it is desirable to install a separate tank.
6. As for the main piping, provide sloping for moisture damage. (About 1/100).
Please consult your distributor.
<Fig. 7>

COAIRE, Div. of Quietside Corporation
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3.6 Wiring
1) Wiring is already completed inside the compressor. Just connect the power adaptor to
complete wiring.
2) Please use terminal when connecting power adaptor.
3) Power circuit breaker must be installed and short circuit must be protected through
short-circuit breaker.
4) Please open the front control panel.
5) Insert power cable through the power cable hole (rubber attachment) on the right surface
to connect to electric connector.
6) Please refer to the table below to select power cable thickness, terminal size and applying
circuit breaker.
7) Please refer to following table for the terminal needed for power connection.
<Fig. 8>
Wire AWG Size (mm
2
)
Power Ground
230V / 460V
CSOF-S3PL(H) 14 (2.0) 10 (3.5)
CSOF-S5PL(H) 10 (3.5) / 14 (2.0) 10 (3.5)
Models

8) Please protect short circuit by installation circuit breaker into the main power cable of
the compressor.
9) To prevent electric leakage, please connect connector to the main terminal block.
10) Refer to following table for the wire thickness and applicable circuit breaker.
11) Always meet NEC and/or local codes, consult your distributor
4.1 Trial Operation
1) Please make sure the power cable and connector are connected.
2) Please make sure the drain valve is closed.
3) Turn "ON" the power circuit breaker. <Fig. 9>
4) Please make sure the power lamp has been turned on. At the same time, check if the alarm lamp
is turned off. If the temperature sensor code is detached, alarm lamb will be turned on.
At this time, please reconnect temperature sensor.<Fig. 8>
COAIRE, Div. of Quietside Corporation
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Circuit Breaker(Amp)
Fuse Type B 230V / 460V
CSOF-S3PL(H) 30A 15 / 10
CSOF-S5PL(H) 30A 30 / 15
Models
4. OPERATION METHOD
<Fig. 9>
<Fig. 10>

<Fig. 13>
COAIRE, Div. of Quietside Corporation
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<Fig. 11>
5) Please close the discharge ball valve. <Fig. 11>
6) Press ON button on the control area of the control box and check to make sure the
compressor spins. <Fig. 12>
7) When the pressure does not rise, set Three Phase to "OFF" for power circuit breaker and change
two phases from the power within electronic switch. (Other than that, please check the cause
for appropriate repairing measure from the [Cause and Remedies for Problem].) <Fig. 13>
<Fig. 12>

<Fig. 15>
8) DISCHARGE PRESSURE CHECK
Using the compression pressure gauge, check if the pressure rises to the level set after the
operation. If the air tank pressure rises up to 114/140 PSI(8.0/9.9 Kg/cm
2
G), the operation stops
automatically. Figure inside () is high pressure specification.<Fig. 14>
9)
CHECK THE PRESSURE SWITCH OPERATION
Open the discharge ball valve and reduce the pressure and check to make sure if the product
operates automatically at 92/119 PSI(6.5/8.4 Kg/Cm
2
G). <Fig. 15>
10)
STOP
Press OFF button in the control area of the control box. Then, check and make sure if the
discharge pressure is 0PSI/cm2(g). Here, the sound of discharging compressed air is not a
sign of damage. <Fig. 16>
COAIRE, Div. of Quietside Corporation
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<Fig. 14>
<Fig. 16>

4.2 General Operation
1) Turn on the power circuit breaker and check and make sure ON lamp is on. <Fig. 17>
2)
START COMPRESSOR
Press the ON button in the control area of the control panel and observe whether the
compressor is operating. If the operation lamp is lighted, check the pressure rise using the
compression pressure gauge.
3)
CHECK DISCHARGE PRESSURE
Check if the air tank compression rises up to 114/140 PSI(8.0/9.9 Kg/cm
2
G).
5)
STOP
Press OFF button and check if the compressor had stopped operating. If it counter-spins for
more than five seconds after turning off the power, the check valve sheet may be damaged. In
that case, exchange the check valve.
6)
TURN OFF THE POWER CIRCUIT BREAKER
When stopping the compressor for a long period of time, turn "OFF" the power circuit
breaker. <Fig. 18>
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<Fig. 17>
<Fig. 18>

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5. COMPRESSOR STRUCTURE
<Fig. 19>

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6. PERIODIC CHECK UP AND MAINTENANCE
6.1 Maintenance Standard
• Low Pressure Specification(CSOF-S3,5PL)

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• High Pressure Specification(CSOF-S3,5PH)
Here, °means that check up is needed and • means exchange is necessary.
mark requires repair of professional serviceman. In that case, please contact the agency or the shop where you
have purchased the product. (Perform only upon initial operation and perform annual check up (every 2,500Hr).
Maintenance Standard (running time) is the figure computed from standard usage condition. In case
of bad operation condition, reduce the period of usage and perform periodic check up. In particular, the product
can be highly affected by the surrounding temperature. Therefore, the surrounding temperature is set to less than
104'F(40'C) and annual average temperature of less than 86'F(30'C).
Maintenance standard is not the guarantee period.
Standard Use Condition : Less than 8 hours every day, good ventilation and surrounding temperature of
36'F-104'F(2'C-40'C)