Grain Systems PNEG-1797 - Manual (Page 43)

7. Dryer Start-Up
PNEG-1797CE CE Approved T-Series Tower Dryer 43
4. Set over pressure shut off (OPSO) per table on Page 20 .
a. Apply air pressure via main solenoid inlet flange.
b. Increase/decrease spring pressure in OPSO.
c. Valve should shut at 45 kPa maximum.
5. Set operational pressure per table on Page 22 .
a. Open main gas valve.
b. Adjust pressure at regulator.
6. Set pilot flow rate.
a. Close pilot line manual shut off valve. (See Figure 7G on Page 51.)
b. Close ‘firing valve’ on main gas line. (See Figure 7I on Page 52.)
c. Start blowers.
d. Start burners.
e. When pilot solenoid valve opens, adjust flow rate to give pilot pressure of 4 kPa.
f. Adjustment is on pilot solenoid valve. (See Figure 7A.)
g. Open pilot line manual shut off valve. (See Figure 7G on Page 51.)
h. Re-set burner control. (It will have gone to lock out after previous attempt to light.) Reset can be
done by cycling the burner switch on the PLC panel.
i. Start burner.
j. Pilot should now light and stay alight. After 10 seconds, main valve should open and after further
4 seconds burner control revert to lock out and pilot extinguish (main flame is shut off). If pilot
does not stay alight, then the pressure and/or flame rod will need to be adjusted to ensure the
burner control is getting a strong flame current. See
Step 7 on Page 44 .
Figure 7A Pilot Valve Flow Adjustment