26
setting up procedure
1 Ensure that the compressed air input pressure to the fluidised bath is 420kPa (60psi).
2 Ensure that the extraction air switch is in the ON position.
3 Disconnect the thermocouple input to the automatic air control PCB (situated in the panel on the
right hand side of the FB-08C) and substitute with millivolt source having correct cold junction
compensation for a type K thermocouple.
4 Adjust mV source so that LED5 only is illuminated (approximately 13.9mV).
Adjust SV5 valve until a flow rate of 13.5 litre/min is indicated on the flow meter
5 Adjust mV source so that LED1 and LED5 only is illuminated (approximately 12.6mV).
Adjust SV1 valve until a flow rate of 14 litre/min is indicated.
6 Adjust mV source so that LED2 and LED5 are illuminated (approximately 11.4mV).
Adjust SV2 valve until a flow rate of 15 litre/min is indicated.
7 Adjust mV source so that LED3 and LED5 only are illuminated (approximately 1mV).
Adjust SV3 valve until flow rate of 16.5 litre/min is indicated.
8 Adjust mV source so that LED4 and LED5 are illuminated (approximately 5.1mV).
Adjust SV4 valve until a flow rate of 20 litre/min is indicated.
When correctly set, the fluidising air flow rate will vary according to the above table. It should be
noted that the air flow requirements are approximate and accuracy is not critical. The air flow rates
achieved will, however, vary according to the air supply pressure and whether the extraction system
is switched ON or OFF.
