American Dryer Corp. Phase 5 Microprocessor AD-170 - Manual (Page 21)

17
To Replace Gas Valve (see burner illustration on page 16)
1. Discontinue power to dryer.
2. Close shut-off valve(s) in gas supply line.
3. Disconnect gas valve wiring.
NOTE: Identify location of each wire for correct reinstallation.
4. Break union connection before gas valve.
5. Loosen and remove screws (4) securing pipe brackets to burner.
6. Remove gas valve/manifold assembly from dryer.
7. Remove valve mounting bracket, manifold, and piping from gas valve.
8. Reverse procedure for installing new gas valve.
WARNING: Test ALL connections for leaks by brushing on a soapy water solution.
NEVER TEST FOR LEAKS WITH A FLAME.
To Replace Main Burner Orifices
1. Refer to "To Replace Gas Valve" and follow steps 1 through 6.
2. Unscrew main burner orifices and replace.
NOTE: Use extreme care when removing and replacing orifices. These orifices are made of
brass and are easily damaged.
3. Reversing the removal procedure for reinstalling.
NOTE: Test ALL connections for leaks by brushing on a soapy water solution.
NEVER TEST FOR LEAKS WITH A FLAME.