Roche 91 Series - Annual Preventive Maintenance; Daily Maintenance; Maintenance; Monthly Maintenance

Roche Diagnostics April 2007
Service manual · Version 2.0 C-9
91xx pH/Electrolyte Analyzers 12 Maintenance
Maintenance
Maintenance
Maintenance procedures for the 9110, 20, 30, 40, 80, 81 Analyzers require minimal
time by the operator to perform. The procedures outlined below should be performed
by the schedule indicated. Detailed instructions for these procedures can be found in
the Instructions for Use describing the correct method to perform routine analyzer
maintenance.
Daily maintenance
m Perform cleaning cycle.
m Perform conditioning cycle.
Weekly maintenance
m Clean sample probe and fill port.
m Clean analyzer surfaces.
Monthly maintenance
m Clean reference electrode housing.
m Check level of pH Filling Solution (9110 only).
Six month maintenance
m Replace peristaltic pump tubing.
Annual preventive maintenance
m Replace complete tubing set.
m Replace peristaltic pump tubing.
m Replace intake tubing (9110 only).
m Replace fill port assembly.
m Replace sample probe.
m Replace sample sensor Quad-ring (9120/30/40/80/81 only).
m Replace preheater Quad-ring (9110 only).
m Check sample sensor voltage (9120/30/40/80/81 only).
m Check sample contact voltage (9110 only).
m Check sample temperature (9140/80/81 only).