2.28 Inlet and Outlet Separators (all Models)
The glass inlet separator helps protect the diaphragm pump inside the system from ingesting liquids
or particulates.
The outlet separator catches any liquid or particulates ejected while the pump is running and when its is operating
in the self-cleaning purge cycle.
WARNING
Always wear safety gloves that are designed for handling glass when removing
the inlet or/and exhaust jars.
Cracked or defective jars can break when being removed.
2.29.1 Self-cleaning Purge (Models 2025, 2026 & 2027 only)
Failure of a diaphragm pump using fluorinated plastics commonly comes from the buildup of liquids or solid
residue over time on the diaphragm or internal valves. Any particulates, water or condensed vapor that may have
been ingested into the diaphragm pump, which is the heart of the Self-Cleaning Dry Vacuum System, is purged
when the system is turned off. The self-cleaning purge automatically turns on for approximately 2 minutes upon
turning off the pump. The digital display will count down in seconds the time left in the purge cycle.
During the last10 seconds of the purge cycle the pump will shut off allowing the unit to vent to atmospheric
pressure.
The outlet separator catches any liquid or particulates during the purge cycle.
To adjust the purge cycle time on Models 2025, 2026 & 2027 from 2 minutes to 2.5, 3.0, or 3.5 minutes, unplug
the pump, remove the base panel at the bottom of the pump and adjust the delay in minutes switch (SW2) to the
desired setting as indicated in table below.
Diagram of Board and Switch SW2 is located in Section 6.11 and 6.12 .
2.29.2 Self-cleaning Purge (Model 2028 only)
Set Cleaning Time
- Allows the end user to change the self-cleaning purge time from 2, 3 or 4 minutes.
1) Press the MENU button on the front panel and use the vacuum control knob to scroll
to the “Setup” option # 3 and push in the Vacuum Control knob.
2) Scroll to “Set Cleaning Time” option # 2 and push in the Vacuum Control knob.
3) Scroll to the desired time (2, 3 or 4 minutes) and push in the Vacuum Control knob.
The * will appear next to the selected and set time ( in seconds).
4) Push in the Vacuum Control knob to exit or scroll to “Back” to go back to the
previous screen.
5) The Self-Cleaning purge will automatically be changed to the new time.
9
Delay in Minutes (Seconds)
On Switch Setting (SW2)
2.0 (120 sec)
2.5 (150 sec)
3.0 (180 sec)
3.5 (210 sec)
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