AFS Foundry Sand Testing Equipment Operating Instructions Manual

RIDSDALE LABORATORY SAND MIXER (cont’d)IIIINSTALLATION(a)(b)(c)Stand the mixer on a convenient bench. Connect to power supply (see rating platefor correct current and voltage) by fitting the moulded plug and 2 metre lead whichare supplied.Make sure the blade assembly is properly located on the drive shaft and seated ontothe mixer base.Check the operation by switching on the power supply and rotating the time switchclockwise.IVOPERATING PROCEDURE(a)(b)(c)(d)(e)(f)(g)Check that the mixer door is closed properly. Put 1 – 2½ kg of sand, plus any dryadditions, into the mixer and mix dry for 1 minute.Make any liquid additions (water, resin, silicate, etc) gradually with the mixer running.Set the time switch for the required time (3 – 5 minutes is usually required forsynthetic moulding or core sands), and allow to time out.Empty by pulling out the door with the motor running.Allow the mixer to empty itself as far as possible and stop the motor by turning thetime switch anti-clockwise. Switch off the power supply to the unit.Remove any loose sand from the blades and breakers with a stiff brush.Lift out the blade assembly and clean thoroughly.Remove any sand grains adhering to the discharge door and guides.VMAINTENANCEClean thoroughly after use.VIRECOMMENDED SPARESPart NoDescription1200 Blade carrier head1201 Large blade – blade carrier head1202 Small blade – blade carrier head1207 Safety switch1229 Time switch.28