Graco Therm-O-Flow Series Instructions-Parts List Manual page 18

Service
b. Solder the leads to the appropriate connector
(F . 15) for 6 pin connector. For Therm–O–
IG
Flow 8 pin assemblies, removal and replace-
ment of the heaters and RTD require a pin
extraction tool, new pins, and a pin crimping
tool. These tools meet spec MIL–C–22520 [Ref.
Daniels AF8 (crimp tool) or equivalent, available
at local electrical supply warehouse.
c. Coat heater or sensor with heat sink compound.
d. Gently slide new heater or sensor into appropri-
ate hole.
e. Either shrink the shrink wrap, or use electrical
tape to electrically insulate the connection
between the leads and connector pins.
5. Reconnect the dispense valve to the receptacle
(F . 14):
IG
a. Reattach the receptacle base to the dispense
valve body and secure it with the two socket
head screws [F
IG
(210)].
b. Reattach the receptacle cover to the Amphenol
connector base and secure the cover with the
screws.
18
. 14, Items (200) and washer
Service
Inspection Frequency
Automatic Dispense Valve
Inspect automatic dispense valve at least once every
two weeks for leakage or other visible damage.
Check specifically for:
• material leaks
• air leaks
Hoses/Tubes
Inspect hoses/tubes at least once every two weeks for
leakage or other visible damage.
• material hose
• air hoses
Heater
Every two weeks, check heater for proper resistance.
Resistance should be approximately 96 ohms for the
120 volt valves or 288 ohms (+30/–40) for the 240 volt
valves. Replace heater if necessary.
Also inspect heater when performing regular mainte-
nance procedures.
Sensor
Every two weeks, check sensor resistance. Resistance
should be 108 ohms at 21C (70F). Replace sensor if
necessary.
Also inspect sensor when performing regular mainte-
nance procedures.
310538N