Instruction Manual

7000-50 & 7000-75 Series Operations Manual Rev A 1/6/2014 Page 28 of 71
Operation of the Heatless Dryer Package (DRYR301)
The flow meter shows the flow rate of dry air entering the chamber. It is adjustable by
the knob at the bottom of the meter. Maximum performance is obtained at 300 SCFH
(or 5 CFM). Operating the unit above or below this purge rate may decrease
performance!! A pressure regulator is installed between the tower dryers and glass
flow meter to limit the pressure into the flow meter. The regulator should be set at a
maximum of 100psi.
1. Open the chamber door and set the humidity set point to 0%
2. Turn the flow meter adjustment knob OFF
3. Adjust the pressure regulator knob so the pressure regulator dial indicates 90
psig maximum. (Pull up on the knob to adjust, push down on the knob to lock)
4. Adjust the flow meter adjustment knob so the flow is 300
SCFH.
The dryer will purge the chamber with compressed air only when dehumidification is
needed to reach the humidity set point.