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Troubleshooting
20
309858K
Heated Pump
See the pump manual for more information.
Air Motor
See the air motor manual for more information.
Problem
Cause
Solution
Rapid down or up stroke (pump
cavitation).
Material not heated to proper tem-
perature.
Check and adjust temperature set point.
Air trapped in pump.
Purge air from the pump - page 13, step
6.
Downstroke: Lower check in pump
is worn.
Upstroke: Upper check in pump is
worn.
Repair pump. See pump manual.
Plate is not melting material fast
enough to supply pump.
Slow pump speed to match melt capacity.
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 does not operate.
Air motor problem.
See Air Motor troubleshooting, below.
Foreign object lodged in pump.
Follow Pressure Relief Procedure, page
14. Remove pump from air motor, page
23. Remove object and reassemble
pump.
Wet-cup leaks.
Worn throat seal.
Tighten wet-cup and/or throat seal pack-
ings. If that does not stop leaking, replace
wet-cup and/or throat seal packings.
Problem
Cause
Solution
Air motor stalled
Main air valve is dirty or damaged
Clean/rebuild main air valve.
Air continually exhausting around
air motor shaft
Air motor shaft seal is damaged
Replace air motor shaft seal.
Air continually exhausting around
the air valve/slide valve
Air valve/slide valve gasket is damaged
Replace the valve gasket.
Air continually exhausting from
muffler while the motor is idle
Internal seal damage
Rebuild air motor.
Oil leaking from exhaust port
Too much lubricant mixed in with the air
supply
Reduce lubricant supply.
Frost build-up on muffler
Air motor operating at too high a pres-
sure or cycle rate
Reduce air motor pressure, cycle
rate, or duty cycle.
Содержание Therm-O-Flow 20
Страница 43: ...Parts 309858K 43...
Страница 48: ...Electrical Schematic 48 309858K Electrical Schematic Part No 617300...
Страница 50: ...Electrical Schematic 50 309858K Part No 617484...
Страница 52: ...Electrical Schematic 52 309858K Part No 617485...
Страница 54: ...Electrical Schematic 54 309858K Part No 617349...
Страница 61: ...Dimensions 309858K 61 15 1 Pump President Air Motor Ram 52 1 in 1323 mm 75 in 1905 mm...
Страница 62: ...Dimensions 62 309858K...