Chapter 1: Functional DescriptionSystem FunctionsService Manual 1-251.3.17 Equipment Grounding1.3.17.1 Grounding and Insulation Design for SafetyThe grounding and insulation design of the Giraffe and Panda Warmers ensures all mains circuitry isseparated from the operator and patient by one of two methods:• Basic insulation with a grounded metal barrier• Double/reinforced insulationThe radiant heater reflecting dish, heater duct, electrical enclosure, and elevating base all rely upon basicinsulation of the wires and a grounded metal barrier.The heater head housing and main bracket (on elevating base models) rely on double/reinforced insulation.For the heater head housing, the two parts of the housing along with the wire insulation form a doubleinsulation system. For the main bracket, a sheet of insulating material is fitted between the bracket and theelevating column. This insulation, along with the insulation on the wires of the elevating base form a doubleinsulation system.1.3.17.2 Grounding and Insulation Design for Electromagnetic CompatibilityThe device incorporates grounding for ESD/EMC compliance. The dovetail rails and legs of the device aregrounded to comply to ESD susceptibility standards.1.3.17.3 Ground and Insulation Design for ConvenienceThe device incorporates IEC appliance outlets for attachment of approved accessories that include a thirdwire ground. The device also incorporates a ground equalization potential post, which allows for theinterconnection of equipment grounds if required.
