CONTRACOR
®
Version 4.2
18
ATTENTION!
Never attempt to override the interlock system.
Doing so could result in injury from unexpected blasting.
Interlock
switch
Cabinet door
Actuator
Picture 4.3.6
. Actuator
adjustment
4.3.5 Cabinet static pressure
Once the inlet is initially set per section 4.1.5, it seldom requires readjustment.
The initial setting produces approximately 50% to 75% of static pressure in the cabinet
enclosure. For adjustment open the inlet damper further to decrease static pressure or
close it further to increase pressure.
Use the gloves as an indicator of right cabinet static pressure. With the exhauster on,
the gloves should be inflated, but not elevated off the grate.
4.3.6 Door Interlocks
The door interlocks disable the blasting control circuit when the doors are open. To enable
blasting, the door interlock switches must be engaged when the doors are closed. The interlocks
are set at the factory and do not usually require field adjustment unless parts are replaced.
To adjust the actuator, bend it by hand as required for engaging the switch by full
closed door.
Test the operation with the doors both open and closed. Point the nozzle away from
the door when it is tested, and only open the door enough to disengage the interlock switch.
