Sealey Belt Drive Air Compressor 3HP with Cast Cylinders & Wheels

1. SAFETY

1.1. ELECTRICAL SAFETY

1.1.1.

The Electricity at Work Act 1989 requires that all portable electrical appliances, if used on business premises, are tested by a qualified electrician, using a Portable Appliance Tester (PAT), at least once a year.

1.1.2.

The Health & Safety at Work Act 1974 makes owners of electrical appliances responsible for the safe condition of those appliances and the safety of the appliance operators. If in any doubt about electrical safety, contact a qualified electrician.

1.1.3.

Ensure that the insulation on all cables and on the appliance is safe before connecting it to the power supply. See 1.1.1. and use a Portable Appliance Tester.

1.1.4.

Ensure that cables are always protected against short circuit and overload.

1.1.5.

Regularly inspect power supply cables and plugs for wear or damage and check all connections to ensure that none is loose.

1.1.6.

IMPORTANT: Ensure that the voltage marked on the appliance matches the power supply to be used and that the plug is fitted with the correct fuse - see fuse rating at right.

• ❌ DO NOT pull or carry the appliance by the power cable.
• ❌ DO NOT pull the plug from the socket by the cable.
• ❌ DO NOT use worn or damaged cables, plugs or connectors. Immediately have any faulty item repaired or replaced by a qualified electrician.

1.1.7.

This product is fitted with a BS1363/A 3 pin plug.

If the cable or plug is damaged during use, switch the electricity supply and remove from use. Ensure that repairs are carried out by a qualified electrician. Replace a damaged plug with a BS1363/A 3 pin plug. If in doubt contact a qualified electrician.

Wiring instructions:

• a) Connect the GREEN/YELLOW earth wire to the earth terminal 'E'.
• b) Connect the BROWN live wire to the live terminal 'L'.
• c) Connect the BLUE neutral wire to the neutral terminal 'N'.

Ensure that the cable outer sheath extends inside the cable restraint and that the restraint is tight.

Sealey recommend that repairs are carried out by a qualified electrician.

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.

Diagram showing a 3-pin plug wiring. It indicates the YELLOW & GREEN EARTH WIRE connected to the earth terminal, the BROWN LIVE WIRE connected to the live terminal, and the BLUE NEUTRAL WIRE connected to the neutral terminal. A cable restraint is also shown. The replacement fuse rating is indicated as 13 AMP.

1.2. GENERAL SAFETY

• Familiarise yourself with the application and limitations of the compressor.
• Ensure the compressor is in good order and condition before use. If in any doubt ❌ DO NOT use the unit and contact your Sealey Stockist.
• ⚠️ WARNING! Item must be serviced by an authorised agent. ❌ DO NOT tamper with or attempt to adjust pressure switch or safety valve.
• ❌ DO NOT carry out any welding operations on any pressurised part of the vessel.
• Before moving, or maintaining the compressor ensure it is unplugged from the mains supply and that the air tank pressure has been vented.
• Maintain the compressor in good condition and replace any damaged or worn parts. Use genuine parts only. Unauthorised parts may be dangerous and will invalidate your warranty.
• Read the instructions relating to any accessory to be used with this compressor. Ensure the safe working pressure of any air appliance used exceeds compressors output pressure. If using a spray gun, check that the area selected for spraying is provided with an air change system/ventilation.
• Ensure the air supply valve is turned off before disconnecting the air supply hose to move a transportable compressor use the handle only. Lift the compressor so that the front leg gives enough clearance for manoeuvring but maintain unit's centre of gravity in front of the wheels. ❌ DO NOT attempt to lift or move the compressor by any other means.
• Use the compressor in a well ventilated area and ensure it is placed on a firm surface.
• Keep tools and other items away from the compressor when it is in use, and keep area clean and clear of unnecessary items.
• Ensure the air hose is not tangled, twisted or pinched.
• Keep children and unauthorised persons away from the working area.
• Only move the compressor by the handle (if portable).
• ❌ DO NOT dis-assemble compressor for any reason. The unit must be checked by qualified personnel only.
• ❌ DO NOT use the compressor outdoors, or in damp, or wet, locations.
• ❌ DO NOT operate within the vicinity of flammable liquids, gases or solids.
• ❌ DO NOT touch compressor cylinder, cylinder head or pipe from head to tank as these may be hot.
• ❌ DO NOT use this product to perform a task for which it has not been designed.
• ❌ DO NOT deface the certification plate attached to the compressor tank.
• ❌ DO NOT cover the compressor or restrict air flow around the unit whilst operating.
• ☠️ DANGER! ❌ DO NOT direct the output jet of air towards people or animals.
• ❌ DO NOT operate the compressor without an air filter.
• ❌ DO NOT allow anyone to operate the compressor unless they have received full instructions.
• ⚠️ WARNING! The air tank is a pressure vessel and the following safety measures apply:
• ❌ DO NOT tamper with the safety valve, ❌ DO NOT modify or alter the tank in any way and ❌ DO NOT strap anything to the tank.
• ❌ DO NOT subject the tank to impact, vibration or to heat and ❌ DO NOT allow contact with abrasives or corrosives.
• Drain condensation from tank daily and inspect inside walls for corrosion every three months and have a detailed tank inspection carried out annually. The tank shell must not fall below the certified thickness at any point.
• ⚠️ WARNING! If an electrical fuse blows, ensure it is replaced with an identical fuse type and rating.
• When not in use, store the compressor carefully in a safe, dry, childproof location.
• When the compressor is not in use, it should be switched off, disconnected from the mains supply and the air drained from the tank.
• Under the PRESSURE SYSTEMS SAFETY REGULATIONS 2000 it is the responsibility of the owner of the compressor to initiate a system of inspection that both defines the frequency of the inspection and appoints a person who has specific responsibility for carrying out the inspection.

2. INTRODUCTION

Suitable for the professional workshop, these units are fitted with a genuine 3hp motor. Twin capacitors and a centrifugal switch aid trouble-free start-up on a 13A supply. 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 flywheel that is designed to force air over the pump to aid cooling. Supplied with full CE certification, test certificates and operating/maintenance manual.

3. SPECIFICATION

4. ASSEMBLY

4.1.

Remove compressor from packaging and inspect for shortages/damage. If items are 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.

Assemble the fixed wheels / castor wheel / rubber feet to the compressor as required (see fig.1).

4.4.

Confirm that the mains voltage corresponds with the voltage shown on the compressor data plate.

4.5.

Position the compressor on a flat surface or with a maximum permissible inclination of 10° (fig.2). Site in a well ventilated area, protected against atmospheric pollution and not in a place subject to explosion hazard. If the surface is inclined and smooth, check if the compressor moves whilst in operation – if it does, secure the wheels with two wedges. If the surface is in a raised position, make sure it cannot fall, securing it in a suitable way.

Fig.1 shows the assembly of wheels and feet. Fig.2 illustrates the maximum permissible inclination of 10° for positioning the compressor.

4.6.

To ensure good ventilation and efficient cooling, the compressor's belt guard must be at least 100cm from any wall (fig.3). Compressors with fixed feet, should not be rigidly secured to the floor. In this case, it is advised to fit 4 anti-vibration supports (optional extra).

4.7.

Take care to transport the compressor correctly, ❌ DO NOT overturn it or lift it with hooks or ropes.

4.8.

Remove the plastic transit plug from the oil filler hole (fig.4) and replace it with the filler/breather plug. It is a push fit, ensure that it is pushed fully home.

4.9.

Before using the compressor, check the oil level by observing the sight glass as shown in fig.4. If the oil is not up to the max mark it should be topped up with synthetic oil suitable for temperatures ranging from -5°C to 45°C (viscosity 5W50). We ❌ DO NOT recommend using mineral oil in these compressors. ❌ DO NOT overfill.

Fig.3 shows the required 100cm clearance from walls for the belt guard. Fig.4 illustrates checking the oil level using the sight glass, with 'Max' and 'Min' marks indicated. It also shows the oil drain plug and the transit plug/oil filler location.

5. OPERATION

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' due to losses within the compressor.

5.1. STARTING / STOPPING THE COMPRESSOR

5.1.1.

To turn the compressor on use the switch on the top of the pressure switch housing (figs.6.1 and 7.1). Turn the switch clockwise to position 'I' to start the compressor and anti-clockwise to position 'O' to stop it.

5.1.2.

Check that the ON/OFF switch is in the 'O' position. On Models SAC1503B and SAC1103B the regulator tap (fig.6.2) should be closed and the output gauge (fig.6.4) must read Zero '0' bar.

5.1.3.

Plug into mains supply and start the compressor by turning the switch to the 'I' position.

5.1.4.

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 (figs.6.5 & 7.5) - is achieved. The compressor will now operate automatically. 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. 2 bar (29psi) less than the maximum pressure.

5.1.5.

Stop the compressor by turning the main switch to the 'O' position. The compressed air inside the compressor head will flow out, making the restart easier and preventing the motor from being damaged. ❌ DO NOT, other than in an emergency, stop the compressor by switching off the mains socket, or by pulling the plug out, as the pressure relief will not then operate and motor damage may result upon restart.

5.1.6.

The motor of the compressor is fitted with a thermal breaker located in the housing on top of the motor. The manual resetting button is located in the end of the housing as shown in fig.10A. When the breaker is tripped, wait for a few minutes and then press the reset button.

5.1.7.

On Models SAC1503B and SAC1103B, the output pressure is regulated by the pressure regulator (fig.6.2). Turn the knob clockwise to increase pressure and anti-clockwise to reduce it. Lock knob in position at required pressure with locking ring. To determine the correct working pressure for any piece of equipment check the corresponding manual. When the compressor is not being used, set the regulated pressure to zero so as to avoid damaging the pressure regulator.

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 (figs.6.5 and 7.5) indicates the pressure inside the main tank, NOT the pressure supplied to the air equipment.

Fig.5 shows a pressure regulator and gauge assembly. Fig.6 and Fig.7 illustrate the pressure switch housing with ON/OFF switch (1), regulator tap (2), pressure gauge (4), and maximum pressure indicator (5) for models SAC1503B, SAC1103B, SAC1153B, SAC1203B.

6. MAINTENANCE

6.1.

In order to keep the compressor in good working condition, periodic maintenance is essential.

6.2. 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.

6.3. Operations to be carried out weekly:

• a) Drain condensation by opening the valve located under the tank (fig.9). Place a container under the valve and open the valve by turning anti-clockwise.
• ⚠️ WARNING! Take care if there is still pressure inside the cylinder as water could flow out with considerable force. Recommended pressure 1 - 2bar max.
• b) Check oil level and, if necessary, top up.

6.4. Operations to be carried out every 50 hours (or more frequently, if the compressor operates in a very dusty atmosphere):

• a) Remove the air filter element (fig.8). Using stored air from the compressor's 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 and air filter housing.
• b) Check for oil leaks.

6.5. 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.

6.6. Operations to be carried out every 400 hours:

• a) Replace the lubricating oil. For oil specifications see 6.8. Remove the filler/breather plug (see fig.4) then remove oil drain plug, draining the oil into a container. Drain when the compressor is hot so that the oil drains rapidly and completely. Incline compressor to ensure complete drainage. Replace oil drain plug and refill through the filler/breather aperture. ❌ DO NOT overfill. Replace plug.
• ⚠️ 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.
• b) Replace air filter. (See fig.8)
• c) Check all tube fittings and electrical connections.
• d) Inspect pressure tank inside and out for damage or corrosion.

6.7. Maintenance Schedule

Fig.8 shows the air filter element. Fig.9 shows the location of the drain plug under the tank.

6.8. 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.

7. TROUBLE SHOOTING

Fig.10 shows the location of the thermal breaker reset button on the motor housing. Fig.11 shows the non-return valve assembly with cap 'A' and rubber disc 'B'.

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.

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.

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.

Sealey Group, Kempson Way, Suffolk Business Park, Bury St Edmunds, Suffolk. IP32 7AR

01284 757500 | sales@sealey.co.uk | www.sealey.co.uk