AFS Foundry Sand Testing Equipment Operating Instructions Manual

RIDSDALE LABORATORY CORE-BAKING OVEN (MODEL PF 60)(cont’d)IGENERAL PRINCIPLES (cont’d)(b) Electrical Connections Connection by a qualified electrician is recommended.The Ridsdale Laboratory Core Baking Oven is supplied for use on single phase220/230V AC supply.Check that the supply voltage is compatible with the voltage on the label, and that thecurrent capacity is sufficient for the amperage on the label, before connection to thesupply.The oven is supplied complete with a 13 amp moulded plug and lead. A supply-ratedfuse is internally fitted.IIOPERATING INSTRUCTIONS(a)Operating CycleThe Ridsdale Core-Baking Oven is fitted with a combined supply light and instrumentswitch. The light will be on whenever the oven is connected to the supply. Theswitch cuts off power to the controller.The fan assisted circulation will operate when the instrument switch is switched on.Connect the oven to the electrical supply. The supply light should glow.Operate the instrument switch to activate the temperature controller; the O positionis off, the I position on. The controller will become illuminated and go through a shorttest cycle.Adjust the temperature controller.Overtemperature option – Hydraulic thermostat. Set the rotary dial to the desiredprotection temperature.Overtemperature option – Digital. If the overtemperature controller has not yet beenset as required, set and activate it.Unless a time switch is fitted and is off, the oven will begin to heat up according tothe controller set point or program.To switch the oven off, set the instrument switch to off. If the oven is to be left off,isolate it from the electrical supply.57