20
American Metal Ware
PB330 & PB430 Shuttle
®
Brewers
Troubleshooting Guide (continued)
WARNING:
To reduce the risk of electrical shock, unplug the power cord before repairing or replacing
any internal components of the unit. Before any attempt to replace a component, be sure to check all electrical
connections for proper contact. Only a qualified service technician should perform electrical and mechanical
adjustments or repairs.
Heating Problems (continued)
PROBLEM
POSSIBLE CAUSE
SERVICE CHECK
SOLUTION
Tank does not
•
Control board is faulty.
•
Check to ensure proper
•
If 5-pin connector is securely
heat.
connection between
attached to control board
connector 5-pin and
and all connections are
control board. Check
secure and functioning
for proper connections
except there is not 120 Vac
in all heater control
across contactor coil
circuitry. Check for
terminals, replace control
proper connections
board.
between N terminal of
contactor coil and
terminal block.
Brewing Problems
PROBLEM
POSSIBLE CAUSE
SERVICE CHECK
SOLUTION
Brew volume too
•
Portion selected on
•
Review timer settings
•
Adjust timer to desired value
large or too small.
touchpad not correct.
versus portion size.
or select different portion
size.
•
Timer not set properly.
•
Compare timer setting
•
Adjust timer to desired value.
to either factory setting
or initial user setting to
determine if it has
been changed.
•
Sprayhead clogged.
•
Visually check for
•
Clean all holes.
clogging of holes in
brewhead.
•
Brew valves clogged
•
Visually inspect brew
•
Clean lime from valve. Seat,
with lime deposits.
valve at hose
cup, or entire valve may
connections.
need replacement.
•
Water supply pressure
•
Check to see that fill
•
Supply water at adequate
or flow rate not
valve cycles on and
pressure and flow rate.
adequate.
off frequently during
brew cycle when all
brew heads are used
simultaneously. Check
to ensure that water
supply line is 3/8” and
pressure is between
30 and 80 psi (207 and
552 KPA).
Brew volume
•
Water supply pressure
•
Check water pressure
•
Plumb water supply so that
erratic.
fluctuates.
with and without other
water pressure is not
appliances operating.
significantly affected by
other appliances.
Note: Small variations from batch to batch are normal.