L Drive Timeout
Is the grounds
funnel correctly
mounted on the funnel
bracket and over brew
chamber?
Remove the
grounds funnel.
Clean any debris
from the funnel
and sweep plate.
Set funnel aside.
Navigate to TEST
ROUTINES > R
DRIVE. Press the
up arrow on right
side until the
funnel is over the
chamber.
Yes
No
Able to
access TEST
ROUTINES?
Yes
Bypass initialization by turning
the machine off at the main
power switch. Push and hold the
third button down on the CPU
and turn the machine back on.
Wait two seconds and release
CPU button. Then press the
second button down on the CPU
to bypass warm-up.
No
Navigate to TEST ROUTINES >
L DRIVE and run piston to the
top of the chamber. Clean out
any grinds from top of piston.
Move the lower piston to the
lower crash point. Use green pad
to clean chamber walls as much
as possible.
Drive piston to top
of chamber, then
time the travel to
the lower crash
point.
Is the travel
time more than
10 seconds?
At the DC board,
check 38V output.
It should be 38Vdc
+/- 3Vdc.
Is the
voltage 38Vdc
+/- 3Vdc?
Check AC output
from transformer
for 30Vac +/-3Vac.
Verify proper
jumper setting.
Is the
voltage 38Vdc
+/- 3Vdc?
Jumper
setting
correct?
Check for more
than 14Vdc at the
motor during
operation in TEST
ROUTINES.
Correct
voltage
present?
Remove and inspect CPU
for obvious damage. Check
for any loose connectors,
and wires in plugs to and
from CPU. Last resort is to
replace CPU.
Remove the lower piston
assembly from the brew
group. Replace the o-rings
and lube. If the piston
continues to move slowly,
replace the motor.
Run test drinks and cleans.
Problem may be intermittent.
Check for sluggish
movement that might
indicate a physical bind. Find
stress point and repair.
Binding or
sluggishness
evident?
Run the brew clean cycle, and
then test machine operations.
It’s possible the problem was a
sticky lower piston that just
needed some rinsing.
Examine the DC supply
board for burnt traces or
other damage. Repair any
wires or connections that
are intermittent. Replace
DC supply board as a last
resort.
No
Yes
No
Yes
No
Yes
Yes
No
Yes
Yes
Adjust jumper plug
and retest machine
operations.
No
No
Verify no doors were
opened during a
brew sequence or
initialization?
Any
open
doors?
Close all doors and
cycle power to unit.
Wait for initialization
to complete.
Yes
No
No
errors on
initialization?
Yes
No
Run test drinks and the clean
cycles. Problem may be
intermittent. Check for sluggish
movement that might indicate a
physical bind. Find stress point
and repair.
END PROCESSNo
Open top panel and
verify position of
funnel.
To Next Page
Loading...
