FScurtis SEG-5 User manual

CAP881
OCTOBER, 2012
REV.A
SEG Series
OIL-INJECTEDROTARY SCREW COMPRESSORS
OPERATOR
MANUAL
SEG-5 SEG-10
SEG-7.5 SEG-15

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Table of Contents
1.0 Introduction
-Preface ………………………………………………………………………….. 3
-Safety …………………………………………………………………………… 7
2.0 Receiving and Installation
- Installation / Precaution …………………………...…………………………… 9
-Electrical …………………………………..…………………………………… 19
3.0 Principle of Screw air compressor
- General …...……………………………………………………………..…….. 21
- Air/Oil Flow………………………………………………………………......... 22
4.0 System Flow Chart and Components Function
- System Flow Chart ……………………………………………………………. 23
- Description …………………………………………………………………….. 25
- Protection / Warning …………………………………………….……………. 27
- Control Systems / Electrical Circuit …………………………….…………..... 27
-Controller Operating Panel……………………………………………….. 29
5.0 Operation
- Inspection …………………………………………….……………………… 30
- Storage ………………………………………………………………………… 31
6.0 Maintenance
- Maintenance Intervals ………………………………………………………... 32
- Air Filter / Oil Filter ………………………………………………………….. 33
- Air / Oil Separator …........................................................................................... 34
- Lubricant ………...……………………………………………………….…... 35
- Oil Analysis ………...……………………………………………….….......... 35
- Thermostatic & Minimum Pressure Valves …………………………….…….. 36
- Belts …………………………...……………………………………….……... 36
- Sheave...……………………………..………………………………….….…... 37
-Fan / Motor ………………………………………………………….………… 38
- Bearings……….…………………………………………..………………….. 39
- Air end / Motor Removal ………………..……………………………………. 39
7.0 Trouble Shooting ………………………………………………………………… 40
8.0 Maintenance Log ………………………………………………………………… 43

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1.0 Introduction
Preface
Warning
Read this manual before assembly or operation of the compressor. Become
familiar with this information, its safety instructions and its operation before
starting unit. Serious personal injury may result if safety and/or operational
information is not understood or comprehended.
◎Alert signals
Description of signals
△ !
Danger
Danger is used to indicate presence of a hazard that will cause
severe personal injury, death, or substantial property damage.
△ !
Warning
Warning is used to indicate the presence of a hazard, which can
cause severe personal injury, or substantial property damage.
△ !
Caution
Caution is used to indicate the presence of a hazard, which can
cause personal injury, or property damage.
_ ____
_ ____
_ ____
Supplementary instruction for operation and maintenance
Reference

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Description of symbols –cont.
Symbols
Description of symbols
Prohibited
Extreme caution
◎Warning Labels are placed on the machines.
If the labels are not clear or missing, contact FS CURTIS directly.
◎Explanations of safety symbols
Operation manual
Follow the instructions before using this compressor.
Confirm the direction of motor rotation before
startup.
See Section 5.5 for instructions
Caution before startup
To restart compressor after a long period of being inactive,
rotate air end manually with the power off. If it is difficult
to rotate, contact FS CURTIS directly.

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Danger: Electric circuits
Danger: Rotating parts
Danger: Hot or noxious gas outlet: Not Breathable
Danger: Heat. Do not touch hot areas
Rotation

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Read instruction
Hearing protection required
Turn off power supply before maintenance or service
around electric equipment, such as starter, and motor.
Remove the 2 RED Shipping Brackets that secure
the motor/airend to the base frame before test run
or startup. Contact FSCURTIS or distributor for
assistance if necessary.

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Safety
1. Become familiar with this manual and follow the instructions before
operating the compressor.
2. If any malfunctions or trouble has occurred, do not run compressor until problem is
resolved.
3. Make sure the compressor has been disconnected before servicing or changing
parts. Lockout and tagout prior to maintenance.
4. To ensure human safety and protect the facility from damage, an electrical ground is
necessary.
5. Wear proper apparel during operation. Protective clothing should be worn such as
facemask or safety goggles and non slip footwear.
6. Optional Dryer should be connected to separate 120V power source and follow
Lockout/Tagout procedures for inspection or maintenance.

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Additional Safety information forAir Compressors
Like all power tools, there is danger associated with operating this equipment. Accidents are
frequently caused by lack of familiarity or failure to pay attention. Use this machine with
extreme caution. If normal safety precautions are overlooked or ignored, serious personal injury
may occur.
The following are some safety suggestions that users should observe:
Caution
-Users that neglect these safety precautions run the risk of serious injury or death.
-Fingers and clothing must be kept away from rotating parts.
-Compressed air from this machine cannot be used for pharmaceutical, food or health
requirements without further treatment.
-Release all pressure from the system prior to maintenance.
-Electric shock could be fatal.
-Grounding of starter and motor is necessary. Choose grounding cable according to
the power range of the compressor.
-Lockout and tagout power supply before working on control panel.
-Lockout and tagout power supply before inspection and maintenance - compressor is
controlled by PID and may start automatically according to the setting.
-Optional Dryer should be connected to separate 120V power source and follow
Lockout/Tagout procedures for inspection or maintenance.
Warning
-Users who neglect the following instructions may damage the compressor.
-Lockout and tagout the compressor if maintenance is needed.
-Lockout and tagout power supply before inspection and maintenance - compressor is
controlled by PID and may start automatically according to the setting.
-Optional Dryer should be connected to separate 120V power source and follow
Lockout/Tagout procedures for inspection or maintenance.
-Relief valve is necessary for air piping larger than 1/2”.
-Do not exceed the rated discharge pressure on nameplate during operation.
-The enclosure should be in place prior to operation

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2.0 Receiving and Installation
A. Receiving
1. Check that your shipment matches your order.
2. Check for any damage that may have occurred during shipment.
B. Installation.
In order to ensure proper installation and trouble free operation with minimal maintenance:
1. Select a location where light is adequate enough to operate, maintain, and inspect the
compressor.
2. A clean, low relative humidity and well-ventilated area is best for safe operation.
The ambient temperature should be kept below 104°F (40℃). The air delivery of the
compressor will decrease as the temperature gets higher.
3. Reserve space for maintenance, the distance between the compressor and the wall or
other equipment must be greater than 28 inches (71 cm).
4. There must be at least 3 feet of clearance between top of compressor and any over head
obstructions.
5. To avoid damage to the unit, lift using eyebolts and straps as shown in Figure 2.1
Figure 2.1

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C. Precaution for piping foundation and cooling system
1. Air piping
(1). Install required accessories.
(2). Main piping should have 1˚- 2˚ slope away from compressor to drain the condensate.
(3). Pressure drop of piping must not exceed 5% of discharge pressure. Select larger piping
than required for better efficiency.
(4). Branch line must be located at the top side of main piping to avoid the condensate from
flowing to the equipment.
(5). To prolong service life of pneumatic tools, install an air filter regulator unit on the
outlet.
(6). Do not randomly reduce the size of the main piping. Use the proper reducer if
necessary to reduce pressure losses.
(7). The ideal installation arrangement of air solution is air compressor + air tank + dryer.
The air tank is capable of draining some of the condensate and cooling down the
temperature of compressed air. This will lead to more efficient dryer operation.
(8). If the air requirement is large in a short period of time, install a higher volume air tank
to reduce the frequency of full/off load control.
(9). The ideal main piping is constructed around the factory as a loop which is better for
delivering compressed air from both sides at any point.
2. Foundation
(1). Select a solid and level surface to install the compressor.
(2). There is no need to construct a base for the screw air compressor since the vibration is
relatively small. However, the area must be flat and strong enough to support the
weight of the unit.
3. Cooling system
Install an air-cooled compressor in a well-ventilated area to avoid high temperature
shutdown. If placed in a sealed room, air extracting and removal apparatus is required
and its capacity must be larger than the cooling fan in the compressor.

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D. Electrical
A qualified electrician in compliance with standards and local codes should do all electrical
wiring. Be sure to investigate local requirements before installing the compressor. Refer to
the wiring diagram before starting any work.
The power supply should be adequate and free of parasitic loads that may cause a low
voltage condition during the operation of the compressor; otherwise, there may be nuisance
electrical shutdowns. This equipment requires a properly grounded electrical disconnect
switch.
We recommend the use of time delay fuses in a fusible disconnect for isolating the unit. This
disconnect should be located so an operator can disconnect the unit without being near the unit
in case of an emergency. We also recommend the use of a lockout/tagout to help insure safety
during maintenance of the compressor. Per the National Electric Code the time delay fuses
should be sized at 175% of the full load amperage (FLA) found on the motor nameplate.
Consult the Code if you want to use another style of branch circuit protection.
All internal wiring has been done at the factory. Wiring of the power supply to the
compressor should be done by a qualified electrician to comply with the National
Electric Code, state code, and any local codes in accordance with the wiring
diagram specific to your compressor model shown in the included wire diagram.
Chart of Unit Max Amp Draw (Motor SFA)
Figure: 2-1
Note: Optional Dryer should be connected to separate 120V power source and follow
Lockout/Tagout procedures for inspection or maintenance.
Model
230 V
460 V
SEG-5
Amp Draw
16.1
8.1
SEG-7.5
Amp Draw
21.6
10.8
SEG-10
Amp Draw
28.8
14.4
SEG-15
Amp Draw
41.6
20.8
Failure to properly ground compressor package could result in controller malfunction.

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