Operation; Starting The Compressor - Sealey SAC0502B.V2 Instructions

fig.2
fig.3
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.
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, and could cause damage to the 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' due to losses within the compressor.
5.1.

STARTING THE COMPRESSOR

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.
5.2. Check that the on/oFF switch is in the 'o' position. on Models SAC0502B.V2 and SAC0102B.V2 the regulator tap (fig.6.2) should be
closed and the output gauge (fig.6.4) must read Zero '0' bar.
5.3. Plug into mains supply and start the compressor by turning the switch to the 'I' position.
5.4. 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.
fig.6
5.5. 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, or by pulling the plug out, as the pressure relief will not then operate and motor damage may result upon restart.
5.6. 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.
5.7. on Models SAC0502B.V2 and SAC0102B.V2, 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. 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.
© Jack Sealey limited
fig.4
fig.7
Original Language Version
SAC0502B.V2, SAC0102B.V2, SAC0152B.V2 Issue: 1 - 16/12/16