Southbend SIMPLE STEAM COUNTERTOP STEAMERS EZ-5 - Manual (Page 33)

M
ODEL
EZ-3 & EZ-5 C
OUNTERTOP
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TEAMERS
T ROUBLESHOOTING
O PERATOR ’ S M ANUAL 1178387 P AGE 33
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Figure 22
Controller Check (for all EZ-5 units and for EZ-3 units built after Jan. 15, 2001)
C98
EZ STEAMER LOGIC CHART
Step Door Switch (SW2) #8 Float Switch (SW1) #7-#9 Contactor Heaters (Load 2) #5 Notes
1 Door Open
No Pressure, Up Position
Switch Closed
Heaters Off
2 Door Open to Close
No Pressure, Up Position
Switch Closed
Heaters On for 60 Seconds, then
Step 3 or 4
Even if float switch
opens with pressure.
3 Door Closed
No Pressure, Up Position
Switch Closed
Heaters On
4 Door Closed
Pressurized, Down Position
Switch Open
Heaters Off
5
Normal Cycle Operation
Door Closed
When Pressure Drops, Goes
to Up Position, Switch Closes
Heaters On for 10 Seconds, then
Step 3 or 4
Even if float switch
opens with pressure.
1. Disconnect power at circuit breaker.
2. Remove control panel, but leave plugged in.
3. Disconnect wire C98 from controller.
4. Reconnect power.
5. Use a spacer to hold door switch in closed position. Contactor should actuate and then deactuate
in less than 60 seconds.
6. If contactor fails to actuate (or actuates but fails to deactuate), replace controller.
7. With spacer still in place and door open, momentarily reconnect wire C98 and then disconnect.
8. Controller should actuate, then deactuate 10 seconds after C98 is disconnected.
9. If contactor fails to actuate (or actuates but fails to deactuate), replace controller.