DVP DC.16DEX, Инструкция по эксплуатации и техническому обслуживанию, Страница: 21 / 24

EN
Operating and Maintenance Instructions
DC.16DEX
19
8702042 – 01/10/2014 – R.4 www.dvp.it
9 TROUBLESHOOTING
DAMAGE CAUSE REMEDY
(A)
The pump does not run
No voltage Provide power supply
Thermal switch has tripped Identify reason and activate switch
Room temperature is too low Restore room temperature to allowed range
Intake of not allowed substances Contact Service Department
Motor winding damaged Contact Service Department
(B)
The pump cannot
reach stated final
pressure (Abs.)
Low oil in tank Top up oil
Oil contaminated Change oil
Oil is not the suitable type Change oil
Wrong motor rotation Check electrical wiring
Gas ballast is open Close gas ballast
Discharge clogged Check couplings at outlet
Intake filter clogged (if present) Clean the filter
(C)
Pump is noisy
Motor coupling damaged
(where present)
Contact Service Department
Bearings damaged Contact Service Department
Vanes worn out Contact Service Department
Wrong motor rotation Check electrical wiring
(D)
Pump runs hot
Oil is not the suitable type Change oil
Oil contaminated Change oil
Poor room ventilation Install an auxiliary ventilator
Motor fan broken Contact Service Department
Motor fan guard clogged Clean motor fan guard
Wrong power supply to motor Check power supply
Discharge clogged Check couplings at outlet
(E)
High oil consumption
High working pressure
(close to atmospheric pressure)
Check oil level frequently
Pump runs hot See point “D”
(F)
Pump does not
maintain vacuum after
power-off
Check valve/system damage Contact Service Department
(G)
Pump leaks oil
Tank screws or plugs loosened Tighten screws or plugs
Tank gaskets damaged Contact Service Department
Oil sight glass not tightened Tighten the oil sight glass