Hoffrichter CARAT I, Service Manual

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8.10 CARRy OuT BATTERy TEST
During the test of the internal battery, the machine remains connected to the mains, is switched on
at the main switch, and must not be disconnected from the mains during the test. no line circuit or
other accessories must be used during the test procedure.
To start the test procedure, press and hold the MFK until the service screen appears. Select the
menu item “Battery Test”, and use the MFK to confirm. After entering the PIn code, the battery test
is then carried out. It consists of three phases:
1. Phase: Battery being charged (max. 3 Hrs. depending on the charge condition of the battery)
2. Phase: Battery now being discharged with constant charge (3 - 3.5 Hrs.)
3. Phase: Battery being charged (3.5 Hrs.)
After completion of the 3. Phase, the capacitance of the battery is shown on the display, instead of
the battery icon.
If the capacitance is > 80 %, the test was successful. If the capacitance is less, and an additional
display “Error” shows on the display, the battery must be replaced with a new one. Always replace
both of the Lithium Ion batteries.
The test takes a maximum of 10 Hrs. The internal battery must be replaced after every 500 charge
and discharge cycles, or every two years.
The test intervals are specified in the recommended maintenance schedule (chapter 9.2).
8.11 CLOSIng THE MACHInE
After the maintenance and calibration is completed, the machine must again be closed.
1. Remove all components used for the calibration (blanking caps, meters, respiratory tube etc.).
2. Check to make sure that the inner mounting is in the correct position in relation to the bottom
cover.
3. The closing position is attained when both of the front corners of the inner mounting are
located in the corners of the bottom cover.
4. Check to make sure that no cables or tubes impede, or complicate the installation of the top
cover, and that none will be trapped or squeezed.
5. From the front, guide the top cover over the tube connections and into the installation position.
6. Attach the top and bottom covers together at the front and rear.
7. Insert the filter cartridge (with new coarse and fine filter) in the filter tray.
8. Attach the MFK.