FOR YOUR SAFETY
PLEASE READ THESE INSTRUCTIONS CAREFULLY
AND RETAIN THEM FOR FUTURE USE.
OWNER’S MANUAL
SC24H & SC50H
AIR COMPRESSOR
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MAIN COMPONENTS
1. Main compressor
2. Pressure switch
3. Outlet Valve
4. Regulating Valve
5. Pressure gauge
6. One-way Valve
7. Drain cock
8. Wheels
9. Discharge pipe
10. Air tank resevoir
11. Safety valve
12. Fan cover
SPECIFICATION
LIST OF GOODS
ITEM LIST OF GOODS QTY
1 Air Compressor 1
2 Air Filter 1
3 Breather Pipe 1
4 Wheel 2
5 Wheel Axis 2
6 Rubber Gasket 1 or 2
7 Instruction Manual 1
ITEM DATA
Model SC24H SC50H
Power 1.5 kW / 2.5 HP
Voltage 230 V
Frequency 50 Hz
Motor Poles 2 P
Rated Speed 2850 rpm
Current 7.5 A
Delivery 9.6 CFM
Discharge Pressure 115 PSI / 0.8 MPa
Restart Pressure 70 PSI / 0.5 MPa
Tank Capacity 24 L 50 L
Dimensions
600x290x645 mm 770x330x730 mm
Air Outlet Size 1/4”
Net Weight 30 kg 38 kg
Noise Information LWA 97 dB
12.
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TRAINING: Prior to use, all users must become familiar with the
instructions given in this manual. In particular, become familiar with
the ON/OFF control for stopping the compressor in the event of an
emergency.
ALWAYS USE EYE PROTECTION: When operating the air compressor, always use eye protection such as goggles, and make sure
that other people in the work area are also using eye protection.
Eye protectors must provide protection from flying particles both
from the front and from the side.
PROTECT YOUR HEARING: Hearing protection should be worn
when operating this compressor, use ear plugs or ear defenders.
NEVER TOUCH MOVING PARTS: Never place your hand near
any moving parts on the air compressor or operate with the covers
removed.
PROTECT YOUR SELF AGAINST ELECTRIC SHOCK: Never operate the air compressor in wet or damp locations.
DRESS PROPERLY: Loose clothing or jewellery may be caught in
moving parts. Always tie long hair back, and wear suitable clothing.
SAFETY PRECAUTIONSWARNING SYMBOLS
READ THIS INSTRUCTION MANUAL CAREFULLY BEFORE OPERATING OR ADJUSTING
THE COMPRESSOR.
Risk of electric shock. The compressor must
be disconnected from the mains supply before
maintenance or removing any covers. Do not
use in a damp environment.
Risk of accidental start-up. The compressor
could start automatically in the event of a
power cut and subsequent reset. Do not carry
the compressor while it is connected to the
power source, or when the tank is filled with
compressed air.
This compressor contains surfaces which may
reach a high temperature during operation.
Never operate with the motor housing removed.
Air and condensation water can burst from the
compressor when the drain plug is removed.
Wear a safety goggles and ear protectors
when using this compressor.
This compressor produces a high sound level
during operation. Ear protection should be
worn.
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DISCONNECT THE AIR COMPRESSOR: Always disconnect the air com-
pressor from the mains power supply and decompress before performing
maintenance, changing any parts and when not in use.
MAINS POWER CABLE PRECAUTIONS: Never pull on the cable when
removing the plug from the mains socket, or lift the compressor by the
mains cable.
AVOID UNINTENTIONAL STARTING: When connecting the air compres-
sor to the mains supply make sure the red button on top of the air com-
pressor is in the OFF (down) position.
STORE THE AIR COMPRESSOR PROPERLY: When not in use the air com-
pressor should be stored in a secure, dry place out of the reach of children.
Always lock up the storage area.
MAINTAIN THE AIR COMPRESSOR WITH CARE: If the air compressor is
damaged in any way, have it repaired by a qualified engineer.
DO NOT USE EXTENSION LEADS: Using extension leads can cause your
compressor motor to burn out. Only use extension hoses.
DO NOT WELD TO THE PRESSURE VESSEL
Do not weld or modify the pressure vessel in any manner.
SAFETY PRECAUTIONS
KEEP VISITORS/CHILDREN AWAY: Do not allow visitors/children to han-
dle the air compressor or attachments and ensure that any people in the
work area are suitably dressed.
KEEP THE WORK AREA CLEAN: Cluttered areas mean accidents, so clear
the work area of all unnecessary tools, debris and furniture.
DO NOT TOUCH HOT SURFACES: During operation, the motor, con-
nections, compressor body, cylinder head and tubes may get hot, do not
touch.
DO NOT DIRECT AN AIR STREAM AT THE BODY: Do not direct the air
stream at people or animals, as injury may result. Compressed air can cause
soft tissue damage and propel dirt and other particles at high speed.
BREATHING AIR: This compressor should not be used to supply breathing
quality air. Never use it as breathing apparatus.
STAY ALERT: Watch what you are doing, use common sense, and do not
operate the air compressor when you are tired. The air compressor should
not be used if you are under the influence of alcohol, drugs or any medica-
tion that makes you drowsy.
DISPOSAL INFORMATION
The air compressor should be disposed of in a safe an environmentally
friendly manner. Contact your local Council for disposal assistance.
SAFETY PRECAUTIONS
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ASSEMBLY
- Use a spanner to attach the wheels to the compressor.
- Use the washers and spring washer in the positions shown.
Insert the support foot
into the position shown.
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PREPARATION FOR STARTING
1. Check all nuts and bolts.
Make sure all loosened parts
are tightened before starting.
2. Before running the compres-
sor remove the white plug and
connect the red bung in it’s
place. (2.)
3. Screw the air filter in before
starting the compressor. (3.)
4. Set the compressor in a clean,
dry and ventilated area.
5. Keep voltage within ±4%
of the rated value.
3
2
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PREPARATION FOR STARTING
5. Keep the oil level in the red
circle of the oil glass sight win-
dow.
You can purchase compressor oil
from our website at:
www.sgs-engineering.com
6. Open the
drain cock, set
the power switch knob to posi-
tion “on” and let the compres-
sor run for 10 minutes with no
load to ensure the moving
parts are lubricated before
regular service.
1. The compressor is controlled by a pressure switch. It can be
stopped automatically as the pressure increases to the maximum
and restarted as pressure decreases to the minimum. The rated
pressure has been adjusted during the manufacturing process
- don’t alter it carelessly. As soon as the motor is switched off
the compressed air in the discharge pipe should be released
through the release valve under the switch. This is a necessary
condition before restarting or the motor will be damaged. The
rated pressure can be altered by turning the adjusting screw.
OPERATION AND ADJUSTMENT
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OPERATION AND ADJUSTMENT
PRESSURE GAUGES
There are two pressure gauges
on the compressor.
1. The pressure gauge on the
RIGHT shows the current pressure in the reservoir tank.
2. The pressure gauge on
the LEFT shows the ‘user set’
outlet pressure. This can be
adjusted using the regulator.
2. The output pressure
of compressed air can be
adjusted by the regulat-
ing valve. Grip the regula-
tion valve knob and turn it
clockwise to increase the
pressure.
OPERATION AND ADJUSTMENT
3. When the running compressor
needs to be stopped set the
pressure switch in the off
position.
4. Always vent the compressor
after each use by turning the
regulator knob fully anticlockwise.
5. Once the compressor is vented,
remove any condensation from
inside the tank by unscrewing the
bleed nipple.
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1. Before any maintenance operation
stop the air compressor, cut off the
power supply and discharge all air in
the air tank.
2. Clean crank case and renew lubri-
cating oil after the first 10 working
hours. Check the oil level through the
oil level sightglass (1.) after every 20
working hours and replenish if neces-
sary- you can replenish by unbolting
the sump bolt, and drain off any old
oil. (2.)
3. Have the safety valve and pressure
gauge checked by a certified repair
centre every 6 months to ensure they
are in the correct working condition.
4. Make sure there is no rust on the air
tank and the air tank is not damaged.
5. Have the thickness of the air tank
checked by a certified repair centre
every year to ensure the tank thick-
ness is not less than 2.1mm.
MAINTENANCE
2
PARTS LIST
ITEM PAR T QTY
1 Bolt M8x110 4
2 Cylinder head 1
3 Cylinder head
gasket
1
4 Valve plate 1
5 Valve gasket 1
6 Cylinder 1
7 Cylinder gasket 1
8 Piston ring 3
9 Piston 1
10 Cir-clip 2
11 Connecting rod 1
12 Crankcase 1
13 Crank 1
14 Bolt M8x22-right 1
15 Rubber gasket 1
16 Breather pipe 1
17 Crank case cover 1
18 Screw M5x14 6
19 Oil leveller washer 1
20 Oil leveller 1
21 Unilateralist valve 1
22 Pressure switch 1
23 Pressure gauge 2
24 Outlet valve 2
ITEM PAR T QTY
24 Switch bracket 2
26 Release pipe 1
27 Safety valve 1
28 Nut 8 1
29 Washer foot 1
30 Bolt M8x25 1
31 Washer 8 1
32 Drain cock 1
33 Wheel 2
34 Air tank 1
35 Discharge pipe 1
36 Motor 1
37 Bearing 5202 RS 1
38 Motor bracket 1
39 Bolt M5x105 4
40 Fan 1
41 Cir-clip 1
42 Bearing 5204 RS 1
43 Sealing ring 1
44 Capacitance 1
45 Nut M8 1
46 Piston pin 1
47 Fan filter 1
48 Handhold 1
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1
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REPLACEMENT PARTS DIAGRAM THERMAL RESET SWITCH
There may be instances your compressor will overheat.
If it cuts out, this is a safety feature to protect you and your
compressor. Leave this compressor for a good while until you reset it.
If the compressor turns off again on re-set you should not keep
running it as it may be damaged and the system may be unsafe.
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TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE ACTION
Motor unable to run,
running slow or getting
hot
1. Fault in line or insufficient
voltage
2. Power wire too thin or long
3. Fault in pressure switch
4. Fault in motor
5. Sticking of main compressor
1. Check the line
2. Replace the wire
3. Repair or replace
4. Repair or replace
5. Check and repair
Sticking of main compressor
1. Moving parts burnt due to
insufficient oil
2. Moving parts damaged or
stuck by a foreign body
Check crankshaft, bearing,
connecting rod, piston, piston ring, etc. and replace if
necessary
Shaking or abnormal
noise
1. Connecting part loose
2. Foreign body in the main
compressor
3. Piston knocking the valve
seat
4. Moving parts seriously
worn
1. Check and retighten
2. Check and clean away
3. Replace with thicker
paper gasket
4. Repair or replace
Pressure insufficient
or discharge capacity
decreased
1. Motor running too slow
2. Air filter choked up
3. Leakage of safety valve
4. Leakage of discharge pipe
5. Sealing gasket damaged
6. Valve plate damaged,
stuck or carbon build up
7. Piston ring and cylinder
worn or damaged
1. Check and remedy
2. Clean or replace the
cartridge
3. Check and adjust
4. Check and repair
5. Check and replace
6. Replace and clean
7. Repair or replace
Excessive oil consumption
1. Oil level too high
2. Breather pipe choked up
3. Piston ring and cylinder
worn or damaged
1. Keep the level within
set range
2. Check and clean
3. Repair or replace
CE MARK
SGS ENGINEERING IS COMMITTED TO DESIGNING, MANUFACTURING,
AND MARKETING PRODUCTS THAT MEET OR EXCEED THE NEEDS OF
THE CUSTOMERS WE SERVE. SGS ENGINEERING CAN SUPPLY A LETTER
OF INCORPORATION OR A DECLARATION OF CONFORMITY AND CE
MARKING FOR PRODUCTS THAT CONFORM WITH EUROPEAN COM-
MUNITY DIRECTIVES.
ISO 9001
SGS ENGINEERING’S COMMITMENT TO QUALITY IS EVIDENT IN EVERY-
THING WE DO, FROM RAW MATERIAL RECEIPT TO HOW WE SUPPORT
OUR CUSTOMERS YEARS AFTER THEY PURCHASE OUR PRODUCTS.
SGS ENGINEERING IS REGISTERED TO ISO 9001: 2000 INTERNATIONAL
QUALITY STANDARD. ISO 9001: 2000 REQUIRES COMPLIANCE WITH
STANDARDS FOR MANAGEMENT, ADMINISTRATION, PRODUCT DEVEL-
OPMENT, MANUFACTURING AND CONTINUAL IMPROVEMENT.
OUR REGISTRATION VERIFIES THAT SGS ENGINEERING HAS ADOPTED
AND MAINTAINS DOCUMENTATION FOR PROCESSES RANGING FROM
SUPPLIERS TO CUSTOMERS, INSPECTION, HANDLING, AND TRAINING.
ISO 9001 ALSO REQUIRES PERIODIC INTERNAL AND EXTERNAL AUDITS
TO ENSURE ALL ASPECTS OF WORK AFFECTING QUALITY CONTROL
ARE MONITORED. THIS ALWAYS HAS BEEN, AND WILL CONTINUE TO
BE, OUR PHILOSOPHY. THAT’S OUR GUARANTEE TO YOU.
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EC Declaration of Conformity
This is an important document and should be retained
MANUFACTURER’S NAME:
TYPE OF EQUIPMENT:
PART NUMBER:
I, the undersigned, hereby declare that the equipment specied above conforms to the above European Communities Directive(s) and Standard(s).
PLACE:
DATE:
(Signature)
Robert Wyatt
Company Secretary
Derby, UK
24th JUNE 2015
SGS Engineering (UK) Ltd
SGS Engineering (UK) Ltd
2 West Side Park
Raynesway
Derby, DE21 7AZ
Air compressor
SC24H/SC50H
EN 1012-1:2010, AfPS GS 2014:01 PAK
Machinery Directive 2006/42/EC
Low Voltage Directive 2014/35/EU
Rated Voltage 230V~
Rated Frequency 50Hz
Rated Input Power 1800W
Protection Class I
Protection Degree IP20
Max. Working Pressure 0.8MPa
Remark Indoors only
EN 1012-1:2010, AfPS GS 2014:01 PAK
PARAMETERS:
APPLICATION OF EC COUNCIL DIRECTIVES / STANDARD:
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