Perma Pure Ambi-GASS - Manual (Page 10)

10 Ambi-GASS User Manual
2. Initially adjust DIP switches on the drain timer to drain for 6 seconds every 24 hours.
The time on the switches is additive. So, left switch should have only the top 0.1 min.
switch in the “ON” position and the right switch should have the 8 and 16 hr. switches
in the “ON” position. These time periods may need further adjustment after system
has been in operation for a while.
4.5 Sample Flow
Sample may be turned on at this time. Adjust flowmeter to desired flowrate.
4.4 Automatic Filter Drain (optional)
The automatic filter drain is controlled by a repeat-cycle-timer that operates a solenoid
valve. There are two DIP switches located on the timing device that control the drain and
cycle times located on backside of control panel.
Factory setting: drain for 0.1 minute once every 24 hours.
Drain time (left DIP switch) 0.1 minutes (1 st switch “ON” – all others “OFF”)
to
102.3 minutes (all switches “ON”)
Cycle time (right DIP switch) 1 hours (1 st switch “ON” – all others “OFF”)
to
1023 hours (all switches “ON”)
1. Adjust purge air pressure regulator to about 15 psig.
Under Vacuum: Purge air regulator will control air pressure to eductor of the
automaticfilter drain. The regulator must be set to provide ample vacuum to remove
filter condensate but not excessive enough to cause an interruption in sample flow
to analyzers.
Under Positive Pressure: Condensate drain flow is directly controlled by a
solenoid valve. When solenoid valve is actuated (opened), positive pressure in filter
housing purges condensate out of the system through the drain line.