Maintenance; 5.1.5. Stop The Compressor By Pushing In The On/Off Switch.; 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 - Sealey SAC20030B Quick Start Manual

the tank rises and that the compressor stops automatically when the maximum pressure value allowed - written on the plate and shown
on the gauge (fig.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 pushing in the On/Off switch. 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.6. When the breaker is tripped, wait for a few minutes and then press the reset button.
fig.6
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.5) 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, the safety valve will activate.
WARNING! For this reason DO NOT tamper with, or adjust, the switch or safety valve.
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6. MAINTENANCE

6.1. 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
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air from the tank.
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 (fig.4).
6.3. Operations to be carried out weekly:
a) Drain condensation by opening the valve located under the tank (fig.7). Place a container under the valve and open the valve
by turning anti-clockwise.
fig.7
WARNING! Take care if there is still pressure inside the cylinder as water could flow out with considerable force. Recommended
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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 by unscrewing the 2 fixing screws (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.
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WARNING! Dispose of waste oil only in accordance with local authority requirements.
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b) Replace air filter. (See fig.8)
© Jack Sealey Limited
Manual
Reset
Button
Original Language Version
Fixing
Screws
fig.8
SAC20030B, SAC15030B Issue: 1 08/03/21