Troubleshooting: Filling, Heating, and Brewing
Brewing Problems
The brewing system consists of the following components: |
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• | Start and Stop, switches located in the top control panel. |
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• | Brew Timer, located in the top control section under the top cover. | ||||
• | Brew Valve, located in the top control section under the top cover. | ||||
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Problem |
| Possible Cause | Service Check | Remedy | |
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Brew volume too | Timer out of | Compare timer setting to | Adjust timer. | ||
large or too small. | adjustment. | factory setting chart. |
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| Pressure not | Fill valve should cycle on | If fill valve does not cycle or takes | |
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| and off frequently during | too long to refill, be sure water line | ||
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| adequate at urn. | |||
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| brew cycle when all brew | is 3/8" and pressure is uninterrupted | ||
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| heads are used. | 30psi. | |
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| Spray head clogged. | Visual | Clean all holes. | |
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| Brew valves clogged | Visual, inspect brew | Clean lime from valve. Seat cup or | |
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| with lime. | valve. | entire valve may need replacement. | |
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| Timer faulty. | Brew time does match | Replace timer. | |
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| timer setting. Timer not |
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| adjustable. |
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Brew volume erratic. | Timer faulty. | Measure brew time for | If time is different from batch to | ||
(there is always some |
| inconsistencies. | batch, replace timer. | ||
small variation from |
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Pressure fluctuations | Check pressure at urn | Plumb water line so its pressure is | |||
batch to batch) |
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| at urn. | ||||
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| inlet. | not influenced by other appliances. | ||
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Brew will not |
| Circuit breaker | If circuit breaker button | If tripped, find cause and reset. If | |
start. |
| tripped or faulty. | is out, breaker is tripped. | faulty, replace. | |
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| Check 120V across | If 120V is across brew valve, but brew | |
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| Brew valve faulty. | valve doesn't open, replace coil or | ||
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| brew valve. | |||
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| valve. | ||
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| Check for continuity | If no continuity, replace switch. | |
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| Stop switch faulty. | across stop switch |
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| when not pressed. |
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| Start switch faulty. | Check 120V between | If start switch does not provide 120V | |
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| S.S. and N on timer | |||
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| start signal, replace switch. | |||
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| when start is pressed. | ||
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| Low temp/no brew | Water is above 190°F | Turn down brew thermostat, see | |
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| thermostat set too | (88°C), but HOT | adjustments. | |
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| high. | WATER light is off. |
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| Timer faulty. | Check 120V between H | If no 120V BREW output from timer, | |
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| and N on timer. If OK, | replace timer. | |
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| check for 120V between | ||
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| BREW and N on timer |
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| after pressing start. |
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Spray head will not | Boiling tank. | If drip is from right | Turn down thermostat. If that doesn't | ||
stop dripping water. |
| side, check for water | cure, check for faulty thermostat or | ||
(spray heads normally |
| from overflow outlet at | heater relay. | ||
drip slightly after |
| top of tank. |
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brew) |
| Limed up brew valve. | Visual check of valve. | Clean valve. Valve seal or entire | |
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| valve may need replacement. | |||
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Shuttle Brewers & Airpot/Shuttle Brewers | Page 14 |