Figure 24 Removing The Dilution Probe Inlet Filter - PerkinElmer Photovac 2020 Manual

sensitivity decrease. Replace the filter every 240 hours of operation,
or more frequently if the instrument is used in a dusty environment.
NOTE: Do not operate 2020 or the dilution probe without an inlet
filter.
To replace the inlet filter on the dilution probe:
1. Turn 2020 off and remove the dilution probe from the
instrument.
2. Hold the filter housing near the housing with a 9/16"
wrench. See Figure 24.
3. Unscrew the top of the filter housing with another 9/16"
wrench. Be careful not to lose the filter spring.
4. Remove the spring and filter. Install the new filter (Part
No. MX395000), open end first. Press the filter into
place so it will seal at the bottom of the filter housing.
Replace the filter spring and the top of the filter housing.
Diluter Housing
Loosen filter cap
with 9/16" wrench
Figure 24
5. Tighten the top nut while holding the bottom one
stationary with the wrench.
6. Calibrate both 2020 and the dilution probe before
continuing normal operation. See Calibration with the
Dilution Probe on page 103.
Removing the Dilution Probe Inlet Filter
Routine Maintenance
Hold filter housing
with 9/16" wrench
123