Maintenance

Check double wall hopper heating fluid level monthly. Add fluid as needed.

Do not overfill when using oil. See overfilling notice on page 18.

Maintenance

Follow pump maintenance instructions in Husky 716 diaphragm pump manual 308981.

Follow heater maintenance instructions in Viscon HP manual 309524.

Troubleshooting

Problem

Cause

Solution

 

 

 

 

 

 

Fluid fittings leaking.

Loose fittings.

Tighten fittings after system reaches

 

 

desired temperature.

 

 

 

Hose not heating to desired tempera-

Diaphragm flow rate set too high.

Decrease diaphragm pump flow rate

ture.

 

to 50 cycles/min.

 

 

 

 

Problem with Viscon HP heater.

See troubleshooting in Viscon HP

 

 

heater manual 309524.

 

 

 

Diaphragm pump not operating cor-

 

See troubleshooting in Husky 716

rectly.

 

diaphragm pump manual 308981.

 

 

 

Oil overflowing out vented hopper

Oil level higher than 3 in. (76.2 mm)

Lower oil level to 3 in. (76.2) below

side fill port during startup.

below fill port at room temperature

hopper fill port.

 

and at rest.

 

 

 

 

Hopper not reaching set temperature

Temperature loss in heated hose is

Allow longer heating time. Insulate

when heating fluid hose first.

too much for the heater capacity to

heated hose bundle.

 

compensate for.

 

 

 

 

Air and heating fluid splatter is exiting

Diaphragm in Husky 716 diaphragm

Replace pump diaphragm. See man-

hopper vented fitting.

pump is cracked.

ual 308981 for parts.

 

 

 

313259D

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Graco 24M224(HP), 256273(HM) Maintenance, Troubleshooting, Do not overfill when using oil. See overfilling notice on