vacuubrand RE 2 - Page 29

Seite 29 von 72 // page 29 of 72
Das Dokument darf nur vollständig und unverändert verwendet und weitergegeben werden. Es liegt in der Verantwortung des
Anwenders, die Gültigkeit dieses Dokumentes bezüglich seines Produktes sicher zu stellen.
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.
- Remove low vacuum stage stator with internal oil separator.
- Remove intermediate bearing plate, high vacuum stage stator and bearing plate (only RZ 8 / RZ 16).
Clean parts
- Check through bores of the oil lines, clean if necessary.
- Check all seal rings for conglutination and cracks, replace if necessary.
- Check silencer nozzle, clean if necessary.
- Remove threaded plug of the detent ball in the bearing cover. Remove and check detent ball with
spring, replace if necessary.
- Remove internal oil separator.
- Check valve cap, spring and valve seat. Replace valve cap and spring if necessary.
Changing the shaft seals
- Check shaft seals in the bearing plate, intermediate bearing plate and bearing cover and replace if
necessary.
- Remove shaft seal by using an appropriate mandrel (special tool, see below).
- Press in new shaft seal, make sure that it remains level to bore.
- Assemble shaft seals only by using a special mandrel (see table and drawings). Apply pressure only to
the outer ring. Take into consideration that the mandrel will pass under the seal and ensure that no
other part can be damaged.
Assembly of the pump
- Assemble pump in reverse order of disassembling.
- Coat all wear faces with pump oil.
- Installing new O-rings, stretch slightly to seat if necessary.
- Place oil pump rotor with rounded face first in bearing cover.
- Fill in vacuum oil into the oil pump before assembling oil pump vanes.
- Position oil pump cover so that the internal half-round groove is directed right to the detent ball.
- Position the complete assembled pump unit in the oil reservoir and screw together with housing.
- Assemble removable sleeve.
- Assemble coupling with fan.
- Fill half of the chamber in front of the removable sleeve with pump oil.
- Screw motor to housing.
- Check operability of the pump unit by turning the impeller.
- Fill in pump oil (see ”Oil change” in the instruction for use).
- Allow the pump to run with gas ballast valve open and inlet closed for approx. 1 h.