7 - 28 Genie S-80 & Genie S-85 Part No. 34032Service Manual - First EditionSection 7 - Repair ProceduresGround Controls8-1Control RelaysRelays used for single function switching aresingle pole double throw (SPDT) relays.How to Test a Single Pole DoubleThrow RelayElectrocution hazard.Contact with electrically chargedcircuits may cause death orserious injury. Remove all rings,watches and other jewelry.Direct Connection Relay1 Label and then disconnect all the wiring fromthe relay to be tested.2 Connect the leads from an ohmmeter orcontinuity tester to each terminal combinationand check for continuity. Terminals 85 and 86represent the coil and should not be tested inany other combination.Test Desired resultterminal 85 to 86 with resistor 75 to 85terminal 85 to 86 without resistor 85 to 95terminal 87 to 87a & 30 no continuity(infinite Aterminal 87a to 30 continuity(zero )3 Connect 12V DC to terminal 85 and a groundwire to terminal 86, then test the followingterminal combinations.Test Desired resultterminal 87 to 87a & 30 no continuity(infinite Aterminal 87 to 30 continuity(zero )decaba terminal no. 87a - N.C.b terminal no. 85 - coilc terminal no. 30 - commond terminal no. 86 - grounde terminal no. 87 - N.O.Control Relay Schematic - with resistor858687 87A30Control Relay Schematic - without resistor858687 87A30
