Torch And Screed Burners Gas Regulator Replacement (Thermolazer 300Tc/Promelt) - Graco ThermoLazer 200TC Repair Manual

Torch and Screed Burners Gas Regulator Replacement (ThermoLazer 300TC/ProMelt)

Torch and Screed Burners Gas Regulator Replacement
(ThermoLazer 300
TC
Removal
1. Close manual gas shut-off valve on propane tank.
2. Disconnect gas supply hose from propane tank.
3. Disconnect gas line at downstream tube elbows
(161).
4. Unscrew swivel union (323) from upstream pipe
elbow (142).
5. Unscrew gas regulator (152) from fitting (323).
6. Unscrew and remove gas regulator (152) from
upstream pipe elbow (142).
Installation
1. Apply pipe sealant to downstream pipe tee (12).
Screw pipe tee (12) with elbow (161) to gas regula-
tor (152). Turn connection until gas tight.
2. Apply pipe sealant to fitting (323) and screw into gas
regulator (152). Turn connection until gas tight.
NOTE: Make sure IN connection of regulator is con-
nected to fitting (323). See FIG. 7
ti25753a
FIG. 7
28
/ProMelt)
ti14128a
142
323
152
OUT
161
3. Screw swivel union (323) onto upstream pipe elbow
(142); which is now connected to gas regulator
(152). Turn connection until gas tight.
NOTE: Make sure IN connection of regulator is con-
nected to the upstream pipe elbow (142). See FIG.
7
4. Connect gas line at downstream tube elbows (161).
Turn connection until gas tight.
5. Connect gas supply hose to propane tank.
6. Open manual gas shut-off valve on propane tank.
7. Check gas lines for gas leaks (see Operation man-
ual).
IN
12
161
ti14411a
ti14127a
Arrow
IN
Indicates
Direction
of Gas
Flow
OUT
152
323
12
ti24821a
3A1320L