Heidolph ROTAVAC Vario pumping unit - Manual (Page 47)

page 47 of 61
Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefully
the validity of this document with respect to his product. Manual-no.: 999248 / 28/04/2011
Fault Possible cause Remedy
❑ Internal venting valve
does not respond, valve
symbol is not displayed.
➨ External pressure transducer
connected and active?
✔ Select internal pressure
transducer or connect exter-
nal venting valve.
❑ Venting valve does not
respond, valve symbol is
displayed.
➨ Valve soiled? ✔ Clean valve.
❑ Function ”Vac control”:
Control stops, ”arrow up”
is flashing.
➨ Preset maximum pressure
exceeded?
✔ Confirm by pressing key
START/STOP. Adapt
maximum pressure value if
necessary.
❑ Function ”Pump down”:
Control stops, ”arrow
down” is flashing.
➨ Pressure below preset mini-
mum pressure?
✔ Confirm by pressing key
START/STOP. Adapt
minimum pressure value if
necessary.
❑ Function is not displayed,
no menu.
➨ No controllable device con-
nected (valve, pump)?
✔ Connect devices or use con-
troller as measuring device.
❑ Controller does not
respond when pressing
keys (except ON/OFF).
PC symbol is displayed.
➨ Controller in remote mode? ✔ Control controller via inter-
face or switch off remote
mode.
❑ Controller does not
respond when operat-
ing any keys. No change
after switching off/on.
✔ Contact local distributor.
❑ Pump does not start or
stops immediately. Warn-
ing triangle and pump
symbol are flashing.
➨ Pump has been exposed to
condensate?
✔ Allow pump to run for some
minutes at maximum speed
with atmospheric pressure
at the inlet.
➨ Overpressure in the exhaust
line?
✔ Open exhaust line, ensure
a free (pressureless) outlet
line.
❑ Pump too noisy. ➨ Loud exhaust noise? ✔ Connect hose or silencer to
pump outlet.
➨ Diaphragm crack or dia-
phragm clamping disc loose?
✔ Perform maintenance.
➨ Other than above mentioned
causes?
✔ Contact local distributor.
❑ Pump seized. ✔ Contact local distributor.