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Maintenance
313259D 19
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.
• 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-
ture.
Diaphragm flow rate set too high. Decrease diaphragm pump flow rate
to 50 cycles/min.
Problem with Viscon HP heater. See troubleshooting in Viscon HP
heater manual 309524.
Diaphragm pump not operating cor-
rectly.
See troubleshooting in Husky 716
diaphragm pump manual 308981.
Oil overflowing out vented hopper
side fill port during startup.
Oil level higher than 3 in. (76.2 mm)
below fill port at room temperature
and at rest.
Lower oil level to 3 in. (76.2) below
hopper fill port.
Hopper not reaching set temperature
when heating fluid hose first.
Temperature loss in heated hose is
too much for the heater capacity to
compensate for.
Allow longer heating time. Insulate
heated hose bundle.
Air and heating fluid splatter is exiting
hopper vented fitting.
Diaphragm in Husky 716 diaphragm
pump is cracked.
Replace pump diaphragm. See man-
ual 308981 for parts.