Bunn SA, STA, STFA service manual TROUBLESHOOTING cont PROBLEM, Probable Cause, Remedy

TROUBLESHOOTING (cont.)

PROBLEM

Inconsistent beverage level in dis- penser (cont.)

Consistently low beverage level in the dispenser (ST, STF, STA & STFA)

Spitting or excessive steaming

PROBABLE CAUSE

3.Syphon system

4.Lime build-up

CAUTION - Tank and tank compo- nents should be delimed regularly depending on local water condi- tions. Excessive mineral build-up on stainless steel surfaces can ini- tiate corrosive reactions resulting in serious leaks.

5.Water pressure (ST, STF, STA & STFA)

1. Timer

2.Strainer/flow control (.222 GPM)

1. Lime build-up

CAUTION - Tank and tank compo- nents should be delimed regularly depending on local water condi- tions. Excessive mineral build-up on stainless steel surfaces can ini- tiate corrosive reactions resulting in serious leaks.

2. Control thermostat

REMEDY

The brewer must be level or slightly lower in front to syphon properly.

Inspect the tank assembly for ex- cessive lime deposits. Delime as required.

The water pressure to the brewer must be at least 20 psi (138 kPa).

(A)Early models-Timer dial must indicate at least two minutes and fifteen seconds.

(B)Refer to Service - Digital Timer for testing procedures. See page 24

(A)Direction of flow arrow must be pointing towards brewer.

(B)Remove the strainer/flow con- trol and check for obstructions. Clear or replace.

Inspect tank assembly for exces- sive lime deposits. Delime as re- quired.

Refer to Service - Control Ther- mostat for testing procedures. See page 14

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