Page 21 of 34
CONTROL & INSTRUMENTATION
A6.1 Control Shroud Removal
Disconnect electrical supply (SAR only). Disconnect nylon pipes from control box, cam timer and pressure
gauges. Remove the two upper and two lower bolts from the end plates (ensure the shroud is supported
during this operation). The shroud can then be removed completely.
A6.2 Pressure Gauge Removal
Remove nylon pipes, remove pushin fittings from pressure gauge and remove clamp nuts. Pressure gauge
can now be withdrawn.
A6.3 Moisture Indicator Removal
Remove two screws from sight glass, change indicator paper and refit ensuring gasket and porous plugs are
in good condition. The moisture indicator should have constant air flow across it, this can be regulated by the
air choke at the rear of the unit.
A6.4 Cam Timer Removal (SAR)
Isolate electrical supply and disconnect cable. Remove nylon tubes from pilot valves and interface. Remove
front cover, this will give access to 2 mounting screws. Cam timer can now be lifted free.
OPERATION
The operation cycle is as follows:
Side A Purge 100 seconds (Side B Drying 120 sec.)
Repressurisation 20 seconds
Side B Purge 100 seconds (Side A Drying 120 sec.)
Repressurisation 20 seconds
Complete cycle time 4 minutes.
A6.5 Pilot Valve Removal
Isolate electrical supply. Remove nylon pipes from valve, remove 4 screws from box lid. This will give access
to the bolts securing the valve. Remove and lift clear.
A6.6 Cam Motor/Gearbox Removal
Isolate the electrical supply. Remove motor wires from the connector block, slacken 2 screws on the drive
shaft coupling and remove 2 screws holding the motor/gearbox in place. Carefully rotate motor/gearbox 180
degrees to allow space then withdraw from drive coupling.
