Service Information − Optional Scale System
26
SCALE SYSTEM DIAGNOSTICS (CONTINUED)
Scale Calibration:
Calibrate the scale system with a known weight of approximately 200 pounds.
1. Remove all items from the stretcher except the mattress and other items used during the patient’s stay.
2. After going to the calibration menu in diagnostics, hold the zero and lb / kg buttons for two seconds to
zero the stretcher. The display will read Hold. Release the button when the display reads Rel. The display
will read 000.0 then 200.0 lbs.
3. Place a calibrated 200 pounds on the middle of the stretcher litter.
4. Hold the zero and lb / kg buttons for approximately two seconds. The display will read Hold. Release
the button when the display reads Rel. The scale system is calibrated. To check the calibration, place
several known weights on the litter and verify the scale displays the correct weight reading.
Unit Lock:
Under normal operation, the scale system will toggle between pounds and kilograms when the lb / kg button
is pressed. To lock the weight unit, hold the zero and lb / kg button for two seconds. After going to the unit
lock menu, press the zero button to toggle between pounds lock (lb) or kilograms lock (kg) or any unit. Press
the zero and lb / kg button for two seconds to lock the unit. The display will read Rel, then only kg or only lb
depending on which unit you locked in.
SCALE SYSTEM BATTERIES
NOTE
To avoid completely draining the batteries and having the optional scale system shut down, replace the batter-
ies whenever only one of the charge indicator bars on the display is black.
1. Remove the two Phillips head screws holding the battery compartment cover on the display assembly.
2. Replace all four AA batteries, being sure to install the positive and negative poles as indicated on the
battery holder. Standard alkaline batteries are recommended. Do not mix old and new batteries or mix
different types of batteries. Properly dispose of the old batteries in accordance with local regulations.
3. Reinstall the screws and the cover.
If the display is flashing “Lo Batt”, the batteries are drained and the scale system is disabled. Replace the
batteries with four new AA batteries as described above.
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