VEMAG ROBOT HP7E, Operating Instructions Manual, Page: 175 / 182

Oil burnt from overheating Flush the vacuum pump
Replace the exhaust filter
Fill in new oil
(
Ú
page 1: Maintenance)
In case the oil life is too short: use oil with
better heat resistance (
Ú
page : Oil) or retrofit
cooling
Mains frequency or voltage outside tolerance
range Provide a more stable power supply
Partial clogging of filters or screens
Partial clogging in the suction, discharge or
pressure line
Remove the clogging
Long suction, discharge or pressure line with
too small diameter Use larger diameter
The vacuum pump fumes or expels oil droplets
through the gas discharge
The oil level drops
The exhaust filter is not properly seated Check the proper position of the exhaust filter,
if necessary insert properly
(
Ú
page 1: Maintenance)
The o-ring is missing or damaged Add or replace resp. the o-ring
(
Ú
page 1: Maintenance)
The exhaust filter shows cracks Replace the exhaust filter
(
Ú
page 1: Maintenance)
The exhaust filter is clogged with foreign mat-
ter
Note: The saturation of the exhaust filter with
oil is no fault and does not impair the function
of the exhaust filter! Oil dropping down from
the exhaust filter is returned to the oil circula-
tion.
Replace the exhaust filter
(
Ú
page 1: Maintenance)
The oil return line is clogged or broken Clean a clogged oil return line
Replace a broken oil return line with an identi-
cally dimensioned line, top up oil (if necessary
by Busch service)
The oil is black Oil change intervals are too long
The oil was overheated
Flush the vacuum pump
Replace the exhaust filter
Fill in new oil
(
Ú
page 1: Maintenance)
In case the oil life is too short: use oil with
better heat resistance (
Ú
page : Oil) or retrofit
cooling
The oil is watery and coloured white The vacuum pump aspirated water or signifi-
cant amounts of humidity
The filter of the gas ballast is clogged
Flush the vacuum pump
Replace the exhaust filter
Fill in new oil
(
Ú
page 1: Maintenance)
Modify the operational mode (
Ú
page : Oper-
ating Notes
Ú
Conveying Condensable
Vapours)
Replace the filter of the gas ballast (d, 440)
The oil is resinous and/or sticky Improper oil type, perhaps in confusion
Topping up of incompatible oil
Flush the vacuum pump
Replace the exhaust filter
Fill in new oil
(
Ú
page 1: Maintenance)
Make sure the proper oil is used for changing
and topping up
The oil foams Mixing of incompatible oils Flush the vacuum pump
Replace the exhaust filter
Fill in new oil
(
Ú
page 1: Maintenance)
Make sure the proper oil is used for topping up
KC 0016 D VEMAG
0870146800 / 100111
page 7