Whirlpool GU1200XT, Техническое образование

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NOTE 2 – APF ENABLED INTERVALS
The APF (Automatic Purge Filtration) wash system allows the control to continuously filter and flush
food soil out of the pump during “APF enabled” intervals scattered throughout each cycle and do it
without interrupting the cycle. The control monitors the pressure switch (soil sensor) input during each
of the APF enabled intervals in the cycle (see time chart). Whenever a pressure switch trip is detected
in one of these APF intervals, the control executes a 10-second “APF purge” to clear the pump of soil.
These APF purges occur in parallel with the cycle and do not interrupt or affect the timing of other
functions (like washing) that are called for in the interval. Each APF purge consists of 5 seconds of Fill
and Drain followed immediately by 5 seconds of Fill by itself. If an APF purge is executed during a
heated wash interval, the heater must be turned off during the first 5-second Fill and Drain portion of
each purge, but cycle timing is not affected and the heater turns back on mid-way through the purge.
Multiple APF purges can occur within each APF interval of the cycle but are limited by certain frequency
and quantity limits:
• APF purges must be spaced at least 60 seconds apart within any given APF interval (the
pressure switch will be ignored prior to 60 seconds).
• The maximum number of APF purges allowed within a given APF interval is specified on the
time chart in that interval (the pressure switch will be ignored for the duration of an APF
interval once the maximum APF limit for that interval has been exceeded). In interval 33, the
limit is “1” for 120°F thermal holds and “3” for all other thermal hold setpoint temperatures.
Note: Models without pressure switches (soil sensors) never get sensor trips and thus never execute
APF purges. (See Model Specifics Table to identify models without pressure switches).
NOTE 3 – WATER HEATING THERMAL HOLD INTERVALS
During water heating thermal holds (intervals 40, 33, & 15), cycle timing is interrupted and the dish-
washer continues washing while it heats the water to the setpoint temperatures specified on the time
chart for each version of the cycle. The Water Heating and Sensing indicators are turned on and the
cycle time displayed by models with numeric displays is frozen during thermal hold intervals (see
Notes 5, 6, & 7). The dishwasher will hold in this suspended, water heating mode until the water
reaches the temperature specified for the thermal hold or a maximum default time limit for the thermal
hold (below) expires. At the conclusion of the thermal hold, the control resumes normal operation and
timing and proceeds to the next interval.
The default maximum time limits for all the thermal hold intervals are as follows (in minutes):
Pre-Wash Main Wash Final Rinse (Final Rinse with Sani Rinse)
Anti-Bacterial/Cookware 30 35 50 (50)
Pots & Pans/Heavy 30 35 30 (50)
Normal — 45 40 (60)
China — 45 30 ( — )
(Quick CleanUp/Time Saver and Quick Rinse/Rinse Only cycles have no thermal hold intervals)
NOTE 4 – THERMALLY CAPPED INTERVALS
Interval 34 is a heated wash interval thermally capped at 150°F/66°C. Interval 10 is only heated for the
Quick CleanUp/Time Saver cycle and is thermally capped in that situation at 150°F/66°C. Anytime the
thermal cap temperature is exceeded during one of these intervals, the heater will turn off, but the
dishwasher will continue washing for the duration of the interval.