Hoffrichter CARAT I, Service Manual

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8 mainTenanCe harDware
8.1 CLEAnIng AnD DISInFECTIOn
1. Use a brush and vacuum cleaner and carefully clean the bottom cover and inner mounting.
2. Use compressed air to clean inaccessible areas and subsequently use a vacuum cleaner to
gather loose particles.
3. Use a cloth, moist with normal concentrated soap solution, to remove stubborn contamination
on the inside and outside of the top and bottom covers.
4. Use surface disinfection and spray for components that duct the air. For this purpose, coat the
following components with 2-3 squirts:
– Air inlet and filter insert (inside of the bottom cover)
– Intake port (rear of the inner mounting)
– Air outlet (rear of the valve manifold)
– Tube connections the respiration tubes (inside)
8.2 FILTER CARTRIDgE
Replace the filter pads (coarse filter [black] and fine filter [white]).
Remove the control circuit board to do points which described in the chapters 8.3 and 8.4.
8.3 CHECk ALL TuBES
Check every silicon tube used in the machine for signs of mechanical damage, ageing and for cor-
rect seating and, if necessary replace:
• Oxygen connection tube in the bottom cover
• Connecting tubes in the manifold between the valve base and tube connection
• Pressure metering tubes on the pressure sensors
8.4 CHECk THE CABLE AnD COnnECTIOnS
Check every connection and supply cable for signs of damage and correct seating and, if neces-
sary to correct or replace:
• RS232 cable
• DC cable
• Battery cable
• Resistance cable
• Valve connecting cable
• Flow sensor cable
• O
2
sensor cable
• Motor cable
• Display cable