Sealey SAC42755B User manual

COMPRESSORS 270LTR VERTICAL BELT DRIVE
5.5HP/7.5HP 3PH 2-STAGE
MODEL NO’S: SACV42755B, SACV52775B
Thank you for purchasing a Sealey product. Manufactured to a high standard, this product will, if used according to these instructions,
and properly maintained, give you years of trouble free performance.
IMPORTANT: PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS & CAUTIONS. USE
THE PRODUCT CORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE DAMAGE AND/OR
PERSONAL INJURY AND WILL INVALIDATE THE WARRANTY. KEEP THESE INSTRUCTIONS SAFE FOR FUTURE USE.
1. SAFETY
1.1. ELECTRICAL SAFETY
WARNING! ELECTRICAL INSTALLATION OF COMPRESSOR TO A 3-PHASE 415VOLT SUPPLY MUST ONLY BE
CARRIED OUT BY A QUALIFIED ELECTRICIAN.
Make sure the power supply cable is correctly connected to the earth. It is the user’s responsibility to read, understand and
comply with the following:
You must check all electrical equipment and appliances to ensure they are safe before using. You must inspect power supply leads,
plugs and all electrical connections for wear and damage. You must ensure the risk of electric shock is minimised by the installation of
appropriate safety devices. An RCCB (Residual Current Circuit Breaker) should be incorporated in the main distribution board.
You must also read and understand the following instructions concerning electrical safety.
The Electricity At Work Act 1989 requires all portable electrical appliances, if used on business premises, to be tested by a qualied
electrician, using a Portable Appliance Tester (PAT), at least once a year.
The Health & Safety at Work Act 1974 makes owners of electrical appliances responsible for the safe condition of the appliance and
the safety of the appliance operator. If in any doubt about electrical safety, contact a qualified electrician.
Ensure insulation on all cables and the product itself is safe before connecting to mains power supply.
Ensure that cables are always protected against short circuit and overload.
Regularly inspect power supply, leads, plugs and all electrical connections for wear and damage, especially power connections, to
ensure that none are loose.
Important: Ensure the voltage marked on the product is the same as the electrical power supply to be used. A three phase plug must
be fitted to this machine.
8DO NOT pull the powered appliance by the power cable.
8DO NOT pull power plugs from sockets by the power cable.
8DO NOT use worn or damage leads, plugs or connections. Replace immediately or have repaired by a qualified electrician.
This product must be fitted with a 3-phase plug according to the diagram, and will require a minimum of 16Amps per phase,
(preferably 32Amp) electrical supply. You must contact a qualified electrician to ensure an appropriately fused supply is
available.
Connect GREEN/YELLOW wire to earth (E) terminal.
Connect the live wires to live 1, 2 and 3. Check for the correct direction of rotation (see arrow on belt cage) to confirm correct
wiring of 3-phase plug when you first run the compressor.
When completed, check that there are no bare wires, that all wires have been connected
correctly, that the cable external insulation extends beyond the cable restraint and
that the restraint is tight.
1.2. GENERAL SAFETY
9Familiarise yourself with the application and limitations of the compressor.
9Ensure that the compressor is in good condition before use. If in any doubt DO NOT use the unit and
contact an electrician/service agent.
IMPORTANT! The compressor must be installed and commissioned by qualified personnel.
WARNING! Compressor must only be serviced by an authorised agent. DO NOT tamper with,
or attempt to adjust, pressure switch or safety valve.
9Before moving or maintaining the compressor ensure it is unplugged from the mains supply and that
the air tank pressure has been vented.
9Only use recommended attachments and parts. To use unauthorised items may be dangerous and
will invalidate your warranty.
Refer to
instruction
manual
Indoor use only
Wear eye
protection
Wear ear
protection
Warning!
electricity
Warning! Hot
surface
Warning!
Automatic
start up
DO NOT
operate with
enclosure
displaced
DO NOT
open the air
cock before an
air hose is
attached
Ensure oil level
is correct
before first use
Original Language Version
© Jack Sealey Limited SAC42755B, SAC52775B | Issue:2 (H3F) 26/03/19

Original Language Version
© Jack Sealey Limited
9Read the instructions regarding any accessory used with the compressor. Ensure the safe working pressure of any air appliance used
exceeds the compressor regulator. If using a spray gun, check the area selected for spraying is provided with an air change system or
ventilation.
9Ensure the air supply valve is turned off before disconnecting the air supply hose.
9Use the compressor in a well ventilated area and ensure it is placed on a firm surface away from any heat sources.
9Keep tools and other items away from the compressor when it is in use and keep area clean and clear of unnecessary items.
9Ensure the air hose is not tangled, twisted or pinched.
9Keep children and unauthorised persons away from the working area.
8DO NOT disassemble compressor for any reason. The unit must be checked by qualified personnel only.
8DO NOT use the compressor outdoors, or in damp, or wet, locations and DO NOT operate within the vicinity of flammable liquids, gases
or solids.
8DO NOT touch compressor cylinder, cylinder head or pipe from head to tank as these may be hot and will remain so for some time after
shutdown.
8DO NOT attempt to move the compressor by pulling the air tool hose.
8DO NOT use this product to perform a task for which it has not been designed.
8DO NOT operate the compressor with the belt guard removed.
8DO NOT deface the certification plate attached to the end of the compressor tank.
8DO NOT cover compressor or restrict air flow around the machine whilst operating.
▲DANGER! DO NOT direct the output jet of air towards people or animals.
8DO NOT operate the compressor without an inlet air filter.
8DO NOT allow anyone to operate the compressor unless they have received full instructions and adequate training.
WARNING! The air tank is a pressure vessel and the following safety measures apply:
8DO NOT tamper with the safety valve and DO NOT modify or alter the tank in any way, DO NOT strap anything to the tank.
8DO NOT subject the tank to impact, vibration or to heat and DO NOT allow contact with abrasives or corrosives.
8No welding operations are to be carried out on any pressurised parts of the vessel.
9DO drain condensation from tank daily, inspect inside walls for corrosion every three months and have a detailed tank
inspection carried out annually. Tank shell must not fall below the certified thickness at any point.
WARNING! If an electrical fuse blows, ensure that it is replaced with one of identical type and rating.
9When the compressor is not in use, it should be switched off, isolated from the mains supply and the air drained from the tank.
2. INTRODUCTION
Heavy-duty three phase compressors suitable for the professional workshop. Two stage pump system coupled with a 3ph motor maximises
performance to keep running costs low compared to single stage single phase models. Pumps feature heavy-duty full cast cylinders, capped
by alloy heads for improved heat dissipation and long life. Heavy-duty drive guards protect belt and ywheel that is designed to force air over
the pump to aid cooling. Supplied with full CE certication, test certicates and operating/maintenance manual. Model No’s SACV52775B and
SACV42755B have 270ltr vertical space saving tanks without compromising on volume.
3. SPECIFICATION
Model No: ..............................SACV42755B.........................SACV52775B
Motor Output: . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.5hp ......................................7.5hp
Voltage/Phase: ...........................415/3 ......................................415/3
Rated Supply:............................16A.........................................32A
Speed: .................................1270rpm ................................. 1280rpm
Air Displacement cfm(ltr/min): ...............21.1(600) ................................29.3(830)
Free Air Delivery cfm(ltr/min : ................16.9(480) ................................22.6(640)
Maximum Pressure: .......................145psi/10bar ..........................145psi/10bar
Receiver Capacity: ........................270ltr ......................................270ltr
Dimensions: .............................770x 620 x 1710mm...............770 x 620 x 1775mm
Weight: .................................160kg ..................................... 200kg
4. PREPARATION
4.1. Remove compressor from packaging and inspect for any shortages or damage. If anything is missing or damaged contact your supplier.
4.2. Save the packing material for future transportation of the compressor. We recommend that you store the packing in a safe location,
at least for the period of the guarantee. Then, if necessary, it will be easier to send the compressor to the service centre.
4.3. The compressor should be secured to a flat surface and should be in a position that allows good air circulation around the unit (at
least a 1mtr gap).
4.4. Check oil level, consulting the reference marks on the stick (g.1 + g.1a) or the oil level sight glass depending on model.
4.5. Use only synthetic oil (see maintenance section for oil specication).
4.6. Confirm the mains voltage corresponds with the voltage shown on compressor data plate.
4.7. Have a qualified electrician connect in accordance with Section 1.1. and check that the motor operates in the correct direction.
4.8. When fully installed, start the compressor and ensure that everything is in good working order before operational use.
4.9. Check the direction of rotation (see arrow on motor) to confirm correct wiring of 3-phase plug. Re-check oil levels.
SAC42755B, SAC52775B | Issue:2 (H3F) 26/03/19

Original Language Version
© Jack Sealey Limited
5. OPERATION
WARNING! Ensure that you have read, understood and apply Section 1 Safety Instructions.
IMPORTANT! The use of extension leads to connect these compressors to the mains is not recommended as the resulting voltage
drop reduces motor, and therefore pump performance which may cause damage to your compressor.
NOTE: Take care when selecting tools for use with the compressor. Air tool manufacturers normally express the volume of air required
to operate a tool in cubic feet per minute (cfm). This refers to free air delivered by the compressor (‘air out’) which varies according to
the pressure setting. DO NOT confuse this with the compressor displacement which is the air taken in by the compressor (‘air in’). ‘Air
out’ is always less than ‘air in’ owing to losses within the compressor.
5.1. STARTING THE COMPRESSOR
5.1.1. Check that the pressure switch (g.2.1) is OFF in the “O” position.
5.1.2. Plug mains lead into mains supply and start the compressor by moving the pressure switch to the ON ‘I’ position. Check the
direction of rotation (see arrow on belt cage) to confirm correct wiring of 3-phase plug.
5.1.3. When starting the compressor for the first time, leave it running with no air tools connected to the air outlet. Make sure that pressure
in the tank rises and that the compressor stops automatically when the maximum pressure value allowed, written on the plate and
shown on the gauge, is achieved. The compressor will now operate automatically.
5.1.4. The pressure switch stops the motor when the maximum tank pressure is reached and restarts it when the pressure falls below the
minimum threshold - approx. 2bar (29psi) less than the maximum pressure.
5.1.5. Stop the compressor by moving the pressure switch (g.2.1) to the “O” position. The compressed air inside the compressor
head will vent, making the restart easier and preventing the motor from being damaged.
8DO NOT, other than in an emergency,stop the compressor by switching off the mains power, or by pulling the plug out, as the
pressure relief will not then operate and motor damage may result upon restart.
5.1.6. When the compressor runs correctly and is stopped correctly there will be:
(a) a whistle of compressed air when the motor stops.
(b) a protracted whistle (about 20-25 seconds) when the compressor starts with no pressure in the tank.
NOTE: a) If the motor does not cut in and out, but runs continuously when using an air appliance, the capacity of the compressor
may be too small for the equipment or tool.
b) The gauge (fig.2.2) indicates the pressure inside the main tank, NOT the pressure supplied to the air equipment. Should the
pressure in the main tank exceed the pre-set switch maximum, a safety valve will activate.
WARNING! For this reason DO NOT tamper with, or adjust, the switch or safety valve.
6. MAINTENANCE
In order to keep the compressor in good working condition, periodic maintenance is essential.
IMPORTANT! Failure to carry out maintenance tasks may invalidate the warranty on your compressor.
WARNING! Before performing any maintenance operation, switch off the compressor, disconnect from electricity supply and release
all air from the tank. (Except for 6.3.a)
6.1. OPERATIONS TO BE CARRIED OUT AFTER THE FIRST 50 WORKING HOURS:
a) Check that all bolts/nuts are tight, particularly those retaining the crankcase and cylinder head.
b) Replace the lubricating oil - see para 6.5.
6.2. OPERATIONS TO BE CARRIED OUT WEEKLY:
a) Drain condensation by opening the drain cock located under the tank (fig.3). Place a container
under the valve and open the valve by turning anticlockwise.
WARNING! Take care if there is compressed air in the tank as water could flow out with
considerable force. Recommended pressure 1 - 2bar max.
b) Check oil level and if necessary, top up.
6.3. OPERATIONS TO BE CARRIED OUT EVERY 50 HOURS:
(or more frequently, if the compressor operates in a very dusty atmosphere):
a) Turn off the compressor and remove the filter element (fig.4). Using stored air from its tank, clean the filter with compressed air.
(Wear eye protection and DO NOT direct air towards the body or hands). DO NOT operate the compressor without the filter as
foreign bodies or dust could seriously damage the pump. Replace the filter element.
b) Check for oil leaks.
SACV42755B g.1 SACV52775B g.1
fig.1a
fig.2
fig.3
SAC42755B, SAC52775B | Issue:2 (H3F) 26/03/19

6.4. OPERATIONS TO BE CARRIED OUT EVERY 100 HOURS:
a) Check the automatic cut-out at max. pressure and the automatic cut-in at 2bar below.
6.5. OPERATIONS TO BE CARRIED OUT EVERY 400 HOURS:
a) Replace the lubricating oil. For oil specifications see 6.7. Remove the dipstick/breather plug then unscrew oil drain plug (fig.1/fig.5),
draining the oil into a container. Drain when the compressor is hot so that oil drains rapidly and completely.
Replace oil drain plug and refill through the dipstick/breather aperture. DO NOT overfill. Replace dipstick.
b) Replace air filter.
c) Check all tube fittings and electrical connections.
d) Inspect pressure tank inside and out for damage or corrosion.
WARNING! Never mix different oils and DO NOT use non-detergent/low quality oils as the compressor may be damaged.
WARNING! Dispose of waste oil only in accordance with local authority requirements.
6.6. RECOMMENDED OILS
Synthetic oil suitable for temperatures ranging from -5°C to 45°C, viscosity 5W50.
We DO NOT recommend using mineral oil in these compressors.
Part No. Qty. Description
FSO1 1ltr x 12 Compressor oil fully synthetic
FSO1S 1ltr x 1 Compressor oil fully synthetic
FSO5 5ltr x 1 Compressor oil fully synthetic
6.7. SCHEDULED MAINTENANCE TABLES
IMPORTANT WARNING - Air contaminants taken into the compressor will affect optimum performance.
Example: Body ller dust or paint over-spray will clog the pump intake lter and may cause internal damage to pump/motor
components.
Please note that any parts damaged by any type of contamination will not be covered by warranty.
fig.5
fig.4
fig.6
Maintenance Operations Weekly 50hrs 100hrs 400hrs
Drain condensation •
Check oil level •
Clean intake filter •
Check for oil leaks •
Replace oil •
Check cut-out •
General cleaning of compressor •
Replace air filter •
Check tube fittings and electrical
connections •
Internal & external inspection of tank •
Original Language Version
© Jack Sealey Limited SAC42755B, SAC52775B | Issue:2 (H3F) 26/03/19

Sealey Group, Kempson Way, Suffolk Business Park, Bury St Edmunds, Suffolk. IP32 7AR
01284 757500 01284 703534 [e-mail] www.sealey.co.uk
ENVIRONMENT PROTECTION
Recycle unwanted materials instead of disposing of them as waste. All tools, accessories and packaging should be sorted, taken to
a recycling centre and disposed of in a manner which is compatible with the environment. When the product becomes completely
unserviceable and requires disposal, drain any fluids (if applicable) into approved containers and dispose of the product and fluids
according to local regulations.
Note: It is our policy to continually improve products and as such we reserve the right to alter data, specifications and component parts without prior
notice.
Important: No Liability is accepted for incorrect use of this product.
Warranty: Guarantee is 12 months from purchase date, proof of which is required for any claim.
WEEE REGULATIONS
Dispose of this product at the end of its working life in compliance with the EU Directive on Waste Electrical and Electronic Equipment
(WEEE). When the product is no longer required, it must be disposed of in an environmentally protective way. Contact your local solid
waste authority for recycling information.
7. TROUBLESHOOTING
7.1.
7.2.
.
FAULT CAUSE REMEDY
Pressure drop in tank. Air leaks at connections. Run compressor to max. pressure, switch off.
Brush soap solution over connections and look
for bubbles. Tighten connections showing leaks. If
problem persists contact Authorised Service Agent.
Pressure switch valve leaks when compressor
is idle.
Non-return valve seal is defective. Discharge all tank pressure. Referring to g.6
unscrew valve cap ‘A’. Clean rubber disc ‘B’ and its
seat. Ret all parts accurately.
Compressor stops and does not start. Power failure.
Motor failure.
Check electricity supply and fuse.
Contact Authorised Sevice Agent.
Compressor does not stop at max pressure. Pressure switch fault. Contact Authorised Service Agent.
Compressor does not reach max pressure. Filter clogged.
Head gasket or valve fault.
Replace lter element.
Contact Authorised Service Agent.
Compressor noisy with metallic knock. Low oil level.
Bearing or piston damage.
Turn off and top up oil immediately.
Contact Authorised Service Agent.
Original Language Version
© Jack Sealey Limited SAC42755B, SAC52775B | Issue:2 (H3F) 26/03/19