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DISCONNECT POWER AT CIRCUIT BREAKER. 2. Remove rear cover from unit. 3. Disconnect float switch lead wires from wires B40 and B42. 4. Disconnect wires B73 and B74 from the pressure switch. 5. Remove lid from float box. 6. Make sure float travels freely along stem of float switch. 7. Place test leads in float switch terminals as shown. 8. Hold lid in same orientation as when installed. 9. Check continuity. There should be continuity. Replace as necessary. 10. Flip lid over. 11. Check for continuity. There should be no continuity. Replace as necessary. TROUBLESHOOTING OPERATOR’S MANUAL 1181587 PAGE 31 TROUBLESHOOTING SEZ SERIES COUNTERTOP STEAMERS Figure 15 Controller Check TROUBLESHOOTING Controller Terminal Block Jumper Wire 1. DISCONNECT POWER AT CIRCUIT BREAKER. 2. Remove control panel, but leave plugged in. 3. Disconnect wires C98 and C99 from terminals 7 and 9 on the controller. Place a jumper wire between these two terminals. 4. Reconnect power. Turn unit on. WAIT 9 MINUTES. 5. Place test leads between terminal 5 of controller and terminal block position 6, as shown. 6. Use a spacer to hold door switch in closed position and simultaneously check voltage. Voltage should match serial plate voltage for 60 seconds, then drop. 7. If controller fails these tests, replace controller. PAGE 32 OPERATOR’S MANUAL 1181587 SEZ SERIES COUNTERTOP STEAMERS TROUBLESHOOTING Figure 16 Inlet Float Valve Check Bushing Seat Pivot Pin Sealing Ball Float 1. DISCONNECT POWER AT CIRCUIT BREAKER. 2. Remove rear cover. 3. Loosen water inlet compression fitting and rotate water inlet assembly out of the way. 4. Remove lid from float box. 5. Remove 1/8" pipe plug from the rear of the box on the left side (facing unit from rear). 6. Check inlet float valve mechanism (on left side facing unit from rear) for proper actuation. 7. Slide pin out of assembly through hole created by removal of the pipe plug. 8. Inspect sealing ball and bushing seat for debris and deposits. 9. Ensure that float has no leaks or deposits that would prevent it from floating properly. 10. Clean all parts in a container of descaling solution, or replace as necessary. 11. Reassemble all parts. NOTICE If the entire float valve assembly is replaced, new Teflon washers must be used and silicone must be used on the bushing seat threads and under the hex head. TROUBLESHOOTING OPERATOR’S MANUAL 1181587 PAGE 33 TROUBLESHOOTING SEZ SERIES COUNTERTOP STEAMERS Figure 17 Pressure Switch Check TROUBLESHOOTING Float Box Lid Air Vent Float Switch Pressure Switch 1. DISCONNECT POWER AT CIRCUIT BREAKER. 2. Remove rear cover. 3. Remove wires B73 and B74 from pressure switch “COM” and “NO” terminals. 4. Open door. 5. Place test leads on “COM” and “NO” terminals as shown. 6. Check continuity. There should NOT be continuity. Replace as necessary. 7. Remove pressure switch from lid. 8. With test leads on “COM” and “NO” terminals as before, gently blow into pressure port and check continuity. There SHOULD be continuity. Replace as necessary. PAGE 34 OPERATOR’S MANUAL 1181587 SEZ SERIES COUNTERTOP STEAMERS TROUBLESHOOTING OPERATOR’S MANUAL 1181587 PAGE 35 TROUBLESHOOTING Figure 18 High-Limit Thermostats Check 1. Note: Allow cavity bottom to cool before performing this test. 2. Disconnect left thermostat lead wire from NO position of R1 relay. 3. Disconnect right thermostat lead wire from wire B58. 4. Disconnect remaining thermostat lead wires from each other. 5. Test each thermostat for continuity. Replace as necessary. 6. Reconnect all thermostat lead wires. TROUBLESHOOTING SEZ SERIES COUNTERTOP STEAMERS PAGE 36 OPERATOR’S MANUAL 1181587 TROUBLESHOOTING Figure 19 Electric Schematic for 208, 220, and 240 Volt Model SEZ-3 SEZ SERIES COUNTERTOP STEAMERS TROUBLESHOOTING OPERATOR’S MANUAL 1181587 PAGE 37 TROUBLESHOOTING Figure 20 Electric Schematic for 480 Volt Model SEZ-3 TROUBLESHOOTING SEZ SERIES COUNTERTOP STEAMERS PAGE 38 OPERATOR’S MANUAL 1181587 TROUBLESHOOTING Figure 21 Electric Schematic for 208, 220, and 240 Volt Model SEZ-5 SEZ SERIES COUNTERTOP STEAMERS TROUBLESHOOTING OPERATOR’S MANUAL 1181587 PAGE 39 TROUBLESHOOTING Figure 22 Electric Schematic for 480 Volt Model SEZ-5 PA RT S PARTS SEZ SERIES COUNTERTOP STEAMERS PARTS NOTICE INSTALLATION OF OTHER THAN GENUINE SOUTHBEND PARTS WILL VOID THE WARRANTY ON THIS EQUIPMENT. The serial plate with voltage, model, and serial information is located on the right side of the steamer cavity on the upper rear corner. On single units a second tag is located on the face of the door which will show only model and serial number. On tandem units, a second tag is on the right side of the right unit and the left side of the left unit. Replacement parts may be ordered either through a Southbend Authorized Parts Distributor or a Southbend Authorized Service Agency. When ordering parts, please supply the Model Number, Serial Number, Part Number, Description, Finish, and Electrical Characteristics as applicable. For parts not listed, consult a Southbe...

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