TYPE OF SWITCH SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION Pushbuttons The operator The contacts in the pushbutton are Replace the switch. cannot bad. open/close door. Faulty switch No power, ground, continuity in wires. Investigate further. Repair the that does not Misaligned the switch. Realign the switch. detecting position of Limit/Proximity door. Switch No continuity Defective switch. Replace the switch. when the door closes. Agency Specific: Agency Specific:
TYPE OF SWITCH SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION Pushbuttons The operator cannot open/close door. The contacts in the pushbutton are bad. Replace the switch. Limit/Proximity Switch Faulty switch that does not detecting position of door. No power, ground, continuity in wires. Investigate further. Repair the Misaligned the switch. Realign the switch. No continuity when the door closes. Defective switch. Replace the switch. Agency Specific: Agency Specific:
RV_309_Coursebook.docx