Perma Pure Mini-GASS 2812T - Manual (Page 14)

14 Mini-GASS User Manual
4. Start-Up Procedure
4.1 Setup Check
1. Check that electrical, sample, purge, drain, and/or steam connections have been made.
2. Turn on compressed or instrument air to system.
4.2 Automatic Filter Drain Control (Optional)
Automatic filter drain is controlled by a repeat cycle timer that operates a solenoid valve. Two DIP
switches are located on timing device to control drain and cycle times located on backside of
control panel.
Standard factory setting is to 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 hour (1 st switch on – all others off)
to
1023 hours (all switches on)
1. Adjust purge air pressure regulator to about 15 psig.
Sample under vacuum: Purge air regulator will control air pressure to eductor of
the automatic filter drain. Regulator must be set to provide ample vacuum to remove
filter condensate but not excessive enough to cause interruption in sample flow to
analyzers.
Under positive pressure: Condensate drain flow is directly controlled by solenoid
valve. When solenoid valve is actuated(opened), positive pressure in filter housing
purges condensate out of system through drain line.
2. Initially adjust DIP switches on drain timer to drain for 6 seconds every 24 hours. Time
on switches is additive. Left switch should have only top 0.1 min. switch in the “ON”
position and right switch should have 8 and 16 hr. switches in the “ON” position. Time
periods may need further adjustment after system has been in operation.