Bedpan / Urinal Bottle and Utensil / Bowl Washer Disinfector (WDS)
Operation, Maintenance and Installation Manual
Issue 16 Page 35 August 22
5.14 Detergent Level and Load Cell Calibration
To be undertaken by Malmet service personnel or Malmet-trained facility
maintenance personnel only.
1. INSERT empty detergent bottle and also suction hose. Also make sure that the bottle is centrally located over the
sensor plate. Check that the supporting plate is correctly located and is not obstructed by the detergent hose and can
pivot freely
2. Adjust the Trimpot “POT1” located near top LHS of D134412 CONTROL module, so that the LEDs D19 O O D20 are just
at the point where it switches from one LED to the other, they may even both be just on at the same time
3. Enter the USER MENU
• Turn power OFF at control LCD display
• Turn power ON at control LCD display
• Hold down both SCROLL and SELECT buttons, when MENU is displayed, release all buttons
• At first MENU press SELECT then SCROLL 4 times to see “DISINF” and press SELECT
The LCD alternately shows DISINF then current level (%)
• Press SCROLL to see EMTYCAL. Press SELECT LCD returns to DISINF
4. INSERT a FULL detergent bottle and suction hose. Ensure that the bottle is centrally located over the sensor plate.
Wait approx. 1 to 3 minutes until liquid is settled
• From DISINF screen press SELECT the LCD alternately shows DISINF; then current level (%) Note - % may also
show as BLANK)
• press SCROLL 2 times to see FULLCAL
• Press SELECT LCD returns to DISINF
CALIBRATION IS COMPLETED
To return to normal operation mode there are 3 options
A. Switch Power OFF at the control
B. Scroll to EXIT then press SELECT then at top level menu SCROLL to EXIT and press SELECT again
C. Wait for menu inactivity timeout. The device returns to the power off state
NOTE: If the load cell reading is less than zero level or the detergent level is greater than 105% then “DETERGENT”
will flash and the level bars will all be off
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