Southbend SEZ-5, SEZ-3 manual “Service Request” Light Comes On During Operation, Troubleshooting

Models: SEZ-3 SEZ-5

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“Service Request” Light Comes On During Operation

TROUBLESHOOTING

SEZ SERIES COUNTERTOP STEAMERS

“Service Request” Light Comes On During Operation

“Service Request” light comes on during operation.

Turn unit off and check that unit drains fully.

Open door. Turn unit back on and wait 30 minutes.

 

 

Is water level

 

 

 

 

 

 

Yes

 

at or above normal level

 

No

 

 

 

 

in cavity?

 

 

 

 

 

 

DISCONNECT POWER AT CIRCUIT BREAKER.

 

Does water

 

 

Yes

 

No

level exceed normal

 

 

 

level?

 

 

 

 

 

Check high-limit

thermostats (see Figure

18 on page 35) and

replace as necessary.

Shut water off as close to steamer as possible.

Disconnect water supply.

Remove rear cover from unit.

Disconnect water inlet assembly at

compression fitting.

Attach pressure gauge to copper tube and check

pressure downstream of regulator.

Check for adequate water pressure to unit.

DISCONNECT POWER AT CIRCUIT BREAKER.

Remove control panel, but leave plugged in.

Leave all wires connected to R1 relay, but pull back connectors enough to allow meter-probe access.

Check resistance between terminal block position 1 and NO terminal on R1 relay (where wire B72 is connected).

 

 

 

 

Is resistance

 

 

Yes

 

 

No

 

 

 

over 1000 ohms?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Replace solenoid valve.

Reconnect power to unit. WAIT 9 MINUTES.

TROUBLESHOOTING

 

 

Yes

 

 

Pressure above

 

 

 

No

 

 

 

 

 

 

 

 

3 psig?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Adjust or replace

 

 

Check float valve (see

 

 

pressure regulator.

 

 

Figure 16 on page 33).

 

 

 

 

 

 

 

 

 

 

Clean or replace as

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

necessary.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check voltage across R1 coil (where wires B42 and

B70 are connected).

 

 

 

 

 

 

 

 

 

Does voltage

 

 

 

 

 

 

 

 

 

 

 

Yes

 

 

 

 

 

No

 

 

 

 

 

 

 

 

 

match serial plate

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

voltage?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check voltage between NO and C

 

Check float switch and

 

terminals on R1 relay (where wires

 

 

replace as necessary

 

 

B72 and B71 are connected).

 

(see Figure 14 on page

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

31).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Does voltage

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Yes

 

 

 

 

 

No

 

 

 

 

 

 

 

 

 

match serial plate

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

voltage?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Replace R1 relay

DISCONNECT POWER AT CIRCUIT BREAKER.

(part # 1181545).

 

 

 

 

 

 

 

 

Shut off water supply as close to steamer as possible.

 

 

 

 

 

 

 

 

Remove screen from strainer and clean or replace as necessary. Reassemble, reconnect, and

recheck the steamer. If the Service Request light still comes on, examine the following for obstructions

or deposits: pressure regulator, solenoid, and float valve. Clean or replace as necessary.

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OPERATORS MANUAL 1181587

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Southbend SEZ-5 “Service Request” Light Comes On During Operation, Troubleshooting, Disconnect Power At Circuit Breaker