American Metal Ware
®
P400GNB-E
Page 14
Problem
Weak coffee
Strong coffee
Bitter coffee
Grounds in coffee
Brew basket
overflowed
Unpleasant taste
Brew volume too
large or too small
Possible Causes
• Not enough coffee used.
• Grind is too coarse.
• Water not hot enough.
• Too much water used.
• Coffee bed has dry areas.
• Too much coffee used.
• Grind is too fine.
• Paper filter collapsed during brewing.
• Too much coffee.
• Coffee ground too fine.
• Double batching.
• Water tank or brew basket needs
cleaning.
• Taste is coming from water supply.
• Portion selected on touchpad not
correct.
• Timer not set properly.
• Water service not supplying adequate
water pressure or flow rate.
• Sprayhead clogged.
• Brew valves clogged with lime
deposits.
Solutions
• Readjust coffee portion.
• Readjust grind to a finer grind.
• Check sprayhead temperature, should be
greater than 185
o
F.
• Adjust brew time at the controller.
• Spray deflector broken or missing.
• Readjust coffee portion.
• Coarsen grind setting.
• Use proper filter.
• Use no more than 9 oz. of coffee.
• Coarsen grind.
• You must dump old coffee and use fresh
new filter for each brew.
• Clean, sanitize (de-lime).
• Install a water filtration system.
• Adjust timer to desired value or select
different portion size.
• Adjust timer to desired value. Compare
timer setting to either factory setting or
initial user setting to determine if it has
been changed.
• Water pressure measured at the unit’s
water inlet valve should be between 30
psi to 70psi delivering a minimum of 1 1/2
gallons per minute.
• Remove sprayhead for cleaning. Follow
cleaning procedures for sanitizing.
• Clean lime from valve. Seat, cup or
entire valve may need replacement.
BREWING PROBLEMS
Troubleshooting
The following procedures must be performed by a qualified service technician.
