Graco 918334, Инструкция-перечень запасных частей

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Heated Pump Troubleshooting
For additional information about the pump, see the pump’s documentation.
Problem Cause(s) Solution(s)
Rapid down stroke or up stroke
(pump cavitation) Material not heated to proper
pumping temperature. Check and adjust temperature set point.
Air is trapped in pump. Bleed air from the pump using this pro-
cedure:
1. Place a waste container under the
pump bleed port.
2. Turn on air to the pump
3. Allow material to flow from the bleed
port until it is air-free.
4. Shut off air to the pump and close
the bleed port.
5. Turn air on to the pump and set the
pump air regulator for normal opera-
tion.
Downstroke: Lower check in pump
is worn.
Upstroke: Upper check in pump is
worn.
Rebuild and replace pump, as neces-
sary.
Material leaks around pump outlet Outlet fitting is loose. Tighten outlet fitting.
Material leaks around bleed port Bleed port fitting is loose. Tighten bleed port fitting.
Pump won’t move up or down Problem with air motor. See Air Motor Troubleshooting chart on
page 30.
Foreign object lodged in pump. Remove object and rebuild pump
assembly.
WARNING
To reduce the risk of serious injury
whenever you are instructed to relieve
pressure, always follow the
Pressure
Relief Procedure (page 21).
Before attempting to dislodge a foreign
object:
1. Relieve system pressure.
2. Remove the pump from the air
motor.
Wet-cup leaks Worn throat seal For Therm-O-Flow Mini-5:
1. Tighten wet-cup and/or throat seal
packings.
2. Replace wet-cup and/or throat seal
packings if tightening does not stop
leaking.
For Therm-O-Flow 5, replace wet-cup
and throat seal packings.