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B. Functions
1. Increasing Rinse Water Flow Rate
Upper Rinse Spray Arm
The rinse water fl ow rate is factory adjusted to 1.90 gal/min
(7.2 L/min). To increase the fl ow rate to 3.17 gal/min (12 L/
min), follow the steps below. Hot water supply of at least
3.44 gal/min (13 L/min) and 113°F (45°C) will be required.
Nut
Clean Pipe
Lower Rinse
Spray Arm
Spacer
1) Remove the upper and lower rinse spray arms.
2) Loosen the clean pipe nut, and remove the clean pipe.
3) Remove the spacer (with 4.5 mm DIA hole) from the nut at the unit side.
4) Replace the clean pipe and the upper and lower rinse spray arms in their correct positions.
C. Sequence of Operation
The steps in the sequence are as outlined below.
1. Auto Fill Cycle
"AUTO FILL" lamp fl ashing and "RINSE TEMP." or "WASH TEMP." lamp on.
If BT WLF/S is open when the "ON/OFF" button is pressed, WV energizes after BT auto fi ll
delay time (factory default: 10 seconds).
When BT WLF/S closes, WV de-energizes, the "AUTO FILL" lamp fl ashes and the auto fi ll
cycle starts.
RPM energizes for length of time set by the auto fi ll cycle rinse time setting (factory default:
13 minutes). For details, see "Auto Fill Cycle Rinse Time" (service menu item 03) in "II.F.7.b)
Service Menu Chart."
At the end of the auto fi ll cycle, there is a 5-second dwell time. CB checks WT WLS. If WT
WLS is closed, BZ beeps, the "AUTO FILL" lamp goes off and the "READY" lamp comes
on. If WT WLS is open, BZ beeps continuously, the "AUTO FILL" lamp goes off and "A1"
fl ashes in the display. For details, see "III.B.3.a) Auto Fill Error (A1)."
If the BT water level goes down and BT WLF/S opens during the auto fill cycle, WV
energizes after BT auto fi ll delay time (factory default: 10 seconds). For adjustment of this
delay time, see "Booster Tank Auto Fill Delay Time" (service menu item 08) in "II.F.7.b)
Service Menu Chart." If delay time is set shorter, WV energizes/de-energizes frequently
and BT may not supply hot water of proper temperature.
If SP is opened during the auto fi ll cycle, SPS opens, RPM de-energizes. The "AUTO FILL"
lamp keeps flashing and the rinse cycle time keeps counting down. When SPS closes
again, RPM energizes.
If WLS is closed when the "ON/OFF" button is pressed, the "READY" lamp comes on and
the unit is ready to start.
Note:
1. If SP is opened during the auto fi ll cycle, RPM de-energizes to stop hot water supply.
If SP is left open for a long time, WT may not fi ll by the end of the auto fi ll cycle. In this
case, WT WLS opens when the unit starts, and the supplementary fi ll cycle begins.
2. WTH is energized when WT WLS closes during the auto fi ll cycle.
3. BTH is energized during the auto fi ll cycle if WLSF/S is closed.