Maintenance; Flushing; Draining Heater; Unclogging Fluid Passages - Graco VISCON HP 309524L Instructions Manual

Maintenance

Maintenance
WARNING
Read warnings, pages 4 and 5. Make sure the main
power is off and heater is cool before doing mainte-
nance.

Flushing

Clogged fluid passages are difficult to clean and reduce
heating efficiency, flow rate, and pressure. Flush fre-
quently, including whenever system is not in use.
1. Follow Pressure Relief Procedure, page 14.
2. Ensure main power is off and heater is cool before
flushing. Use a compatible solvent, and follow flush-
ing instructions in your fluid supply and spray gun
manual. Do not turn on heater until fluid lines are
clear of solvent.

Draining Heater

(F . 12)
IG
1. Follow Pressure Relief Procedure, page 14.
2. Remove heater inlet and outlet fittings. Have a con-
tainer ready to catch the fluid.
Inlet
F . 12: Draining Heater
IG
16

Unclogging Fluid Passages

(F
1. Drain the heater.
2. Remove the heater block (3) from the heater hous-
3. Pour a high strength, compatible solvent into the
4. Flush out the clog.
5. Clean all passages thoroughly before reassembling.
F
IG
Outlet
05550-524
. 13)
IG
ing. See Heater Block, page 20.
heater tube to soften the clog.
Pour in solvent
3
. 13: Unclogging Fluid Passages
05551-524
309524L