Troubleshooting 6-11Part 237478_03 2012 Nordson CorporationThermostat CheckFollow this procedure to check a thermostat.WARNING: Risk of burns. Relieve pressure. Airtrapped in the hose or guncan spit out molten adhesive that can cause severe burns. Failure to relievehydraulic pressure can result in serious burns. Failure to relieve hydraulicpressure can result in serious burns.1. Relieve hydraulic pressure. Refer to the Relieving Hydraulic Pressureprocedure in Section 3, Installation.WARNING! Risk of shock. Even when switched off. Nordson applicators,hoses, and guns contain electrical potentials that can cause death.Disconnect and lock out line voltage to the applicator.2. Move the applicator circuit breaker to the OFF position; then disconnectand lock out input electrical power to the applicator.3. Remove the six manifold body cover screws, then remove the cover.4. Disconnect the thermostat wires.5. Connect an ohmmeter (set on the lowest resistance scale) across thethermostat. Continuity exists: normal indication. Return to the TroubleshootingGuide. No continuity: failed thermostat. Replace thermostat (refer toSection 7, Repair).Figure 6‐6 Manifold Body CoverScrews
