Adjustment Of Temperature, Speed And Water; Adjustment Of Speed; Adjustment Of Water - Electrolux FOM 71 CLS Maintenance Manual

Adjustment of temperature, speed and water

Wascator FOM 71 CLS
Adjustment of temperature, speed and water
Many of the machine's preset parameters shown under Settings 1 in Menu
mode can be changed. Some of these parameters are useful during the mainte-
nance and calibration procedures. A full parameter list can be found in Table 1
Adjustment of temperature
If the actual temperature in the bath does not correspond to the set temperatu-
re or temperature shown in the display, a correction can be made. Parameters
"IS TEMP ADJUST ADD" and IS TEMP ADJUST SUB" can correct a deviation.
Each parameter will change the temperature (decrease or increase). For defini-
tions and scale intervals, see table at the end of this document. Note that equal
parameter values in both fields will both add and subtract the same change and
thus giving no correction from the default value.

Adjustment of speed

An accurate calibration of the wash and/or spin speed can be achieved using
the SPEED CALIB. LOW RANGE IN % and SPEED CALIB. HIGH RANGE IN %
parameters. The low range covers the speed interval 0-300 rpm, and the high
range from 300-1100 rpm. The parameters are a ratio factor where a change of
one unit will give a 0.1 % change of the speed.
It is also possible to adjust the display value of the speed to actual speed. The
display value shown is a calculated value derived from motor speed and the
pulley ratios. Due to belt slip and pulley tolerances the displayed value may
from time to time differ from the actual value. Parameters: SHOWED SPEED
CALIB. LOW' and SHOWED SPEED CALIB. HIGH
can adjust any difference. These parameters are also ratios where a change of
1 unit will give a 0.1% change of displayed speed.

Adjustment of water

For zero calibration of the scale see "Calibration of the scale system".
Due to the short time delay between the scale sensor system and the water
valve closure a negative off set value is needed in order to increase the ac-
curacy. Parameter: OFF SET LEVEL HG (1Hg = 0.1kg). Default value is 2 (0.2
kg) but in case water pressure is high, this value may need to be increased, or if
the pressure/flow is low, to be decreased. If a change is necessary this can be
observed during a filling if the weighting system always stops at a small amount
(± 0.1-0.2 kg ) from the expected value.
The control system switches from the normal high flow valve to a smaller 5
litre/min valve at the end of each filling in order to increase the accuracy of the
system. The parameter START SLOW FILLING HG defines how much before
the set amount of water this change of valves shall occur. Default value is 10HG
(=1 kg and equal to 1 litre )and shall not be changed.
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