Perma Pure Mini-GASS 2812T - Manual (Page 16)

16 Mini-GASS User Manual
4.4 Preheating the System
1. Turn on AC power or steam to system.
WARNING!
2. Set purge air pressure to 15 psig.
3. Adjust purge air flow to 20 l/min.
4. Set purge air eductor vacuum level to 5 in-Hg (if applicable).
5. Ensure purge air is exhausting from system.
6. On systems with SIS2 or SIVS2 option, temperature controller will be alternately displaying
-AL- and actual purge air exhaust temperature until purge air temperature comes within
5
O C of setpoint temperature.
7. Allow 15 - 30 minutes of additional heating time after system has come to setpoint
temperature. Sample flow may be started. For Mini-GASS with a pump, when set on “AUTO”
mode, pump will turn on when unit has reached temperature and purge gas is sensed.
On AC powered units, temperature control display should light. DO NOT BEGIN SAMPLE FLOW
AT THIS TIME! Check purge air is flowing immediately after turning on AC power or steam. If,
for any reason, there is no purge air or flow is inadequate, turn off AC power or steam before
attempting to locate problem. OPERATING SYSTEM WITH LITTLE OR NO PURGE AIR CAN
CAUSE DAMAGE TO MEMBRANE DRYER ASSEMBLY.