Human Humalyzer 2000 - Vacuum Pump and Pump Control PCB; Temperature Control

8 Rev. B
Vacuum Pump and Pump Control PCB
The vacuum pump and pump control PCB should require no maintenance. If the vacuum pump
runs continuously, you probably have a leak in the vacuum side. Check the waste bottle cap and
fittings. Check that the tubing is firmly seated on barbs and all fittings are tight. Turn the fittings
only until finger-tight. Do not over-tighten the plastic Luer fittings! If the waste bottle is located
at a higher or lower level than the instrument, such as on a shelf, or if the instrument is used at
very high altitudes, the vacuum trimpot may require adjustment. See the section “Vacuum
Adjustment”. If the vacuum pump is taking longer to achieve full vacuum (runs much longer
than usual, but otherwise works), the exhaust filter is likely clogged and should be replaced. In
the event that the exhaust filter gets wet due to a waste bottle spill, it must be replaced. See the
section "Exhaust Filter Replacement".
"Temperature Control
The temperature control system is very stable and ordinarily does not require adjustment or
recalibration. In the event calibration must be verified or re-established, refer to the section
“Temperature Calibration”.
Humalyzer 2000 Service Manual