Graco Therm-O-Flow Series Instructions-Parts List Manual page 13

Service the Automatic Dispense Valve
Some dispense valve seals and o-rings can be replaced
while the dispense valve is still mounted. However, to
replace the needle, you must remove the automatic
dispense valve from the mounting bracket and
disassemble it.
Prior to installation, lubricate all seals and o-rings with
115982 Graco thermal lubricant (3 oz. cartridge) or an
equivalent lubricant. Check with the material supplier for
a compatible lubricant.
F . 8
IG
310538N
Service
Snuff-Back Valve Shown
Disconnect Automatic Dispense Valve from
Mounting Bracket
Remove the automatic dispense valve from its mounting
bracket.
1. Perform the procedures in Prepare to Service the
Automatic Dispense Valve on page 12.
WARNING
HOT SURFACE AND FLUID HAZARD
The material and equipment may be hot!
To reduce the risk of injury, wear eye
protection, gloves and protective clothing
when servicing this dispensing system
component.
2. Disconnect the cable plug from receptacle on dis-
pense valve (H). See F
3. Disconnect air lines from dispense valve air ports
(G).
4. Disconnect material hose from material inlet port
(A).
5. Separate the dispense valve body from the tem-
perature conditioning manifold if used:
Reconnect Automatic Dispense Valve to
Mounting Bracket
Reconnect the automatic dispense valve to its mounting
bracket. See F . 8.
IG
1. Reconnect air lines to dispense valve air ports (G).
2. Reconnect the electrical cable plug to the recepta-
cle (H).
3. Reconnect the material hose to the dispense valve
material inlet port (A).
Service
. 8 on page 13.
IG
13