Graco Therm-O-Flow Series Instructions-Parts List Manual page 14

Service
Disassemble Automatic Dispense Valve
Snuff-Back Valve Shown
F . 9
IG
To disassemble the automatic dispense valve:
1. Relieve automatic dispense valve pressure.
WARNING
To reduce the risk of serious injury, whenever you are
instructed to relieve pressure, always follow the
Pressure Relief Procedure (page 11).
14
Service
2. Make sure you have removed the dispense valve
from its mounting.
3. Remove the cable plug from the automatic dispense
valve.
a. Remove the two screws (230) from the connec-
tor cover. Then remove the connector cover.
b. Remove the two socket head screws [F
Item (200)], two washers (210). The heater car-
tridge (270) and sensor (320) will come out of
the dispense valve body (F
4. Remove the four socket head screws (310) and pull
cylinder cap (260) and cylinder base (240) from the
dispense valve body (190). The needle and piston
remain with the cap and base.
5. Remove cap from base.
6. Remove needle from either the cap or the base
(depending on which piece it went with). When the
needle is separated from the base, the closure
spring (370) falls out.
7. Using an o-ring pick, remove dispense valve body
seal (70).
. 9,
IG
. 15).
IG
310538N