29
Fault
Check
Power on but air
a) Check there is no restriction in the supply.
controller does
Supply to the unit must be at 60 psi with 130 L/min flow.
not illuminate
b) Check the blue silicone rubber tube, from the plenum
chamber to the pressure switch, is in place. Check the
stud in the centre of the plenum chamber is in place.
c) Check the bath is filled with media to the correct level.
d) With the extraction switch off, switch on the air supply,
open the valve on the flowmeter until the float is at the top
of the tube.
e) If the float does not rise:
1 Check the air supply again.
2 Check the pipework for kinks and leaks. NOTE: The
oil filter has a continuous bleed of air on the drain pipe.
3 Check the regulator in the unit has not been closed.
NB. If the regulator is changed, air must be recalibrated to 10psi.
f) If the float does rise, check the bed is fluidising.
g) If the bed does not fluidise:
1 Check for leaks in the pipework
2 Check for leaks in the blue silicone tube
h) If the bed does fluidise, switch on the extraction air.
i) Check that the flowmeter float does not drop more than 5 L/min.
j) If the float drops:
1 The air supply is insufficient
2 The air mover is out of adjustment
k) If the float does not drop, switch on the power with the mains switch.
l) Check the switch illuminates.
m) If the mains switch does not illuminate:
1 Check the mains supply
2 Check the fuse
3 Check the wiring
4 Check the switch
n) If the mains switch does illuminate check the controller display
illuminates.
o) If the controller does not illuminat
1 Check the wiring
2 Check the micro switch is lifting (on the pressure switch).
3 Lift the micro switch lever; if the controller illuminates then
there is insufficient air; start again.
4 If the controller does not illuminate when the micro switch is
lifted the pressure switch is faulty or the controller is faulty.
5 Replace the pressure switch and test again.
6 If the fault persists replace the controller.
