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A 2.4 PURGE ADJUSTMENT
A2.4 Purge Adjustment
Before attempting any adjustments to the purge on the
Maxi Smart Dryers ensure that the dryer is in
re-pressurisation.
At this point switch off the electrical supply to the dryer.
Find and locate the solenoid control valves for INLET
VALVE A and EXHAUST VALVE B.
Manually turn the over-ride on Inlet valve A to the
open position.
Manually turn the over-ride on the Exhaust valve B to
the open position. Column B will now de-pressurise.
Unscrew the two exhaust silencers located in the control shroud at the front. Using a 1" BSP plug, blank off one
of the exhaust ports so that all the purge air escapes through one port. Ensure that the flow meter to be used
has a full scale deflection larger than the required purge flow.
Using 1" BSP flexible hose, connect from the exhaust port to the inlet of the flow meter NB. never allow the
float of the flow meter to go off the top of the scale, and never pressurise the flow meter.
Using the brass purge plug, adjust the purge flow to the correct flow rate for the dryer, this must be carried out
with the dryer at its MINIMUM operating pressure. On certain dryers there will be two purge plugs, on these
dryers it is recommended that the plug nearest the inlet and outlet be fully open and the plug nearest the control
shroud be used for fine adjustment.
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