Graco Therm-O-Flow Series, Инструкция-перечень запасных частей

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Troubleshooting
10 310538N
Troubleshooting
Some solutions require disassembling the automatic dispense valve. Always relieve system pressure before
performing these procedures.
See PARTS section for the parts that need to be serviced.
WARNING
To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow
the Pressure Relief Procedure (page 11).
Problem Cause(s) Solution(s)
Air leaks from automatic dispense
valve Loose air connections Check air connections.
Worn o-rings Replace o-rings (90) and (100) in cylinder
base.
Worn ring Replace ring (110) in cylinder base.
Material leaks from front of
automatic dispense valve Seal, spacer or retaining ring is worn Replace rod seal (150), spacer (160),
and retaining ring (170).
Obstruction inside dispense valve Remove seat adapter (10). Check and
replace if necessary, rod seal (150),
spacer (160), and retaining ring (170).
Worn needle Check and replace needle (140), if
necessary.If replacing needle, you must
disassemble dispense valve.
Worn seat (Base seal models) Check and replace seat (10) if necessary.
Material leaks from automatic dispense
valve body Seal not installed correctly Check seal (70) and replace if necessary.
Seal is worn
Automatic dispense valve
does not shut off Loose air connections Check air connections.
Worn needle-seal interface Check and replace, if necessary, needle
(140), rod seal (150), spacer (160), and
retaining ring (170).
If replacing needle, you must disassemble
dispense valve
Automatic dispense valve
does not shut off Worn spring-piston interface Disassemble dispense valve. Check
and replace, if necessary, needle (140),
and spring (370).
Automatic dispense valve
does not shut off Spring broken or not installed correctly Disassemble dispense valve. Check
and replace, if necessary, needle (140),
and spring (370).
Automatic dispense valve does not
heat material Loose heater wires Check and reconnect wire connections.
Loose sensor wires Check and reconnect wire connections.
Heater unit failed Replace heater. See page 17.
Sensor failed Replace sensor. See page 17.
Temperature controller failed Replace temperature controller.
No power to heating circuitry Apply power to heating circuitry.