Hoshizaki JWE-620UA-6B - Manual (Page 18)

13
Dishwasher Sequence Flow Chart
JWE-620UA-6B
1. Auto Fill Cycle
• DS must be closed for cycle to
start.
• RPM time: (service menu item 03). • RPM energized/de-energized
count: (service menu item 07).
• BTH is de-energized during Auto
Fill Cycle.
• WTH energized when WT
WLS
closed.
Cycle Steps
2. Ready Cycle (Unit Inactive)
WV
energized/de-energized by
BT WLF/S RPM
energized (time=service menu
item 03)
WT WLS
check.
Go to Ready Cycle if closed.
Initial startup begins here
Wash Cycle Time (service menu item 01 (Standard Mode) or service menu item 02 (Long Mode))
BT WLF/S
check
Cycle extended if open (display lights rotate)
"A1" error appears in display.
Legend: BT
–internal booster tank
BTH
–internal booster tank heater
BUWLF/S
–backup water level
fl oat
switch
BZ
–buzzer
CB
–control board
DFT
–detergent feeder terminals
DS
–door switch
RFT
–rinse aid feeder terminals
RPM
–rinse pump motor
WLF/S
–water level
fl oat
switch
WLS
–water level sensor
WPM
–wash pump motor
WT
–wash tank
WTH
–wash tank heater
WV
–inlet water valve
Note: If DS opens during the auto
fi ll, wash, or rinse cycle, BZ beeps, the corresponding cycle lamp goes off and RPM or WPM
de-energize. If DS opens during wash or rinse cycle, "READY" lamp comes on. When DS closes again (if service menu item 11 is set for door start), the mode lamp starts
fl ashing. If in auto
fi ll cycle, the unit resumes cycling RPM for the remaining
number of times determined by the auto
fi ll cycle setting. If the unit was in a wash or rinse cycle, the unit starts a new cycle
in the selected mode.
WT WLS check.
WT WLS
closed
WTH
energized when WT water temp.
is at wash temp. setpoint (service menu item 04) or lower WTH
de-energized when WT water
temp. is 5°F (3°C) above wash temp. setpoint (service menu item 04) BTH
energized when BT water temp.
3°F (2°C) below rinse temp. setpoint (service menu item 05) or lower BTH
de-energized when BT water
temp. reaches rinse temp. setpoint (service menu item 05) WV
energized/de-energized by
BT WLF/S BTH
de-energized when BT
WLF/S
opens WTH
de-energized when WT
WLS
opens
WT WLS
open
3. Wash Cycle
Cycle started by door switch or "STANDBY/CLEANING" button (service menu item 11).
WPM
energized (power supplied to
DFT
when
WPM
energized)
WPM
de-energized when unit enters
5-sec. dwell time (power cut to
DFT
when
WPM
de-energized)
WTH
energized when WT water temp. at
wash temp. setpoint (service menu item 04) or lower WTH
de-energized when WT water temp.
is 5°F (3°C) above wash temp. setpoint (service menu item 04) BTH
energized when BT water temp. 3°F
(2°C) below rinse temp. setpoint (service menu item 05) or lower BTH
de-energized when BT water temp.
reaches rinse temp. setpoint (service menu item 05) WV
energized/de-energized by BT WLF/S
BTH
de-energized when BT
WLF/S
opens WTH
de-energized when WT
WLS opens
5-sec. Dwell Time
4. Rinse Cycle
Starts after wash cycle. If mode is set to "RINSE," can also be started by door switch or "STANDBY/ CLEANING" button (service menu item 11). Rinse Cycle Time (service menu item 03)
1-sec. Dwell Time
RPM
energized (power supplied to
RFT
when
RPM
energized)
RPM
de-energized when unit enters
1-sec. dwell time (power cut to
RFT
when
RPM
de-energized)
WTH
energized when WT water temp. at
wash temp. setpoint (service menu item 04) or lower WTH
de-energized when WT water temp.
is 5°F (3°C) above wash temp. setpoint (service menu item 04) BTH
energized when BT water temp. 3°F
(2°C) below rinse temp. setpoint (service menu item 05) or lower BTH
de-energized when BT water temp.
reaches rinse temp. setpoint (service menu item 05) WV
energized/de-energized by BT
WLF/S
BTH
de-energized when BT
WLF/S
opens WTH
de-energized when WT
WLS opens
BT WLF/S
check
Display lights rotate if open
b) Auxiliary Code A-1 and Later