ULTRASOURCE Ultravac 500, Руководство пользователя

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and Repair Manual. Auxiliary oil cooling is the
most practical approach to a severe heating prob-
lem.
Contaminated Air Stream
When the air stream contains solids and/or liq-
uid that contaminate the oil, it must be changed
more often. If the air stream contains a small per-
centage of contaminates and/or they are slightly
aggressive* (mild acids, etc.), synthetic oil, such as
Busch R570, will resist breakdown better than the
standard Busch R530. The solution is to install a fil-
ter or knock-out pot to keep the contaminates out of
the pump.
*
Process air streams with a large percentage of contami-
nates and/or are more than slightly aggressive must use a
Once-Through-Sealant or dry type pump.
Oil change intervals can only be established by
experience with the pump operating in the actual
conditions (see previous paragraph for some of the
conditions). Develop the oil change interval by peri-
odically checking an oil sample removed from the
pump. When the oil sample has become dark in
color (from solids and carbonized particles) or is
milky looking (from solids), it is time to discard it.
3.2 Automotive-Type Oil Filter
The 0025-0250 Series, Single Stage, Rotary
Vacuum Pumps are equipped with an automotive-
type oil filter (Ref. 100). When replacing the auto-
motive-type oil filter, use only a Busch genuine fil-
ter.
Note: Make sure to tighten the Busch oil filter
securely against the aluminum sealing surface so
that leaks will not occur.
3.3 Exhaust Filter (Ref. 120)
Every nine (9) to twelve (12) months, or as nec-
essary, replace the exhaust filter elements. The serv-
ice life of the exhaust filters varies widely with
pump application. It is only necessary to change the
filters when the elements become clogged with for-
eign material or burned oil. Indications of clogged
filters are smoke and oil mist coming from the pump
exhaust, higher than normal motor current or oil
leaking from the gas ballast valve on RA models.
A pressure gauge (Pos 90) is now supplied with
your R5 vacuum pump as part of the oil fill plug.
This gauge has a green field and a red field. A pres-
sure within the green field would indicate normal
pressure. Any pressure, in or close to the red field,
Figure 4 - Removing Exhaust Housing
Figure 5 - Removing Filter Spring
WARNING: If the gas entering this pump is
a health hazard, use rubber gloves and all neces-
sary personal protection equipment when per-
forming the exhaust filter replacement opera-
tion.
WARNING: Wear safety glasses when
installing or removing the spring retainers. The
retainers can, if not secured correctly, slip off
and fly out of the exhaust box.
8