Satellite Slide Tank - Manual (Page 30)

plates from the pump in order to gain
access to the rotor. Because of the time
this entails, it is advantageous to have a
fresh set of vanes on hand before
checking. Then the new vanes will be
ready for installation if you need them.
Replacing Rotor Vanes
Refer to the following instructions and the
pump assembly diagram in Figure 4.4
when changing the rotor vanes on your
vacuum pump.
30
MAINTENANCE
Replacing the rotor vanes requires that the
pump be removed from the slide-in unit. To
remove the pump, first remove the
coupling guard and the inlet and outlet
airline hoses. Then, unbolt the pump from
the slide-in mounting stand. Remove the
pump along with the pump side of the
coupling. The coupling should separate
freely. Place the pump on a solid work
bench to ready it for changing the vanes.
WARNING : Wear protective
gloves, eye protection, and appropriate
clothing when working with sewage
effluent or septage. These materials may
contain hazardous chemicals and
bacteria, which can cause infection,
injury, or even death due to contact.
„
IMPORTANT : When replacing rotor
vanes be sure to have replacement
gaskets, O-rings, and seals on hand in
case any of these items should need
replacing and/or be damaged during
disassembly.
„
IMPORTANT : It may be
advantageous to replace gaskets, O-rings,
seals, and bearings when replacing rotor
vanes. Your CALUMET dealer offers a
rebuild kit that includes these items.
Proper Tools for the Job
Replacing rotor vanes will require
disassembly of the front end of the vacuum
pump including removing bearings and
covers that may be press- fit into place. It is
important to gather together the correct
tools, including tools for pulling parts free
from press-fits, before beginning the job.
„
IMPORTANT : Be careful not to
damage bearing fits, shaft threads, or
sealing surfaces by hammering, prying or
gripping with pliers.
Assemble the following tools before
replacing rotor vanes:
• Stiff blade putty knife
• Wrench set
• Pry bars (two blunt tip pry bars or two
heavy duty, flat end, screw drivers)
• Properly sized sleeves for installing
bearings
• Replacement gaskets, O-rings, and
seals, or a rebuild kit
• Soft head mallet
Replacement Procedure
Use the following procedure to replace the
rotor vanes in your vacuum pump:
1. Remove the coupling half attached to
the drive shaft, and then unbolt the drive
shaft from the rotor shaft.
2. Remove the drive shaft from the end of
the rotor shaft. If needed, tap the drive
shaft with a soft mallet to help free it from
the tapered rotor
shaft.
3. Remove the bolts from the bearing
plate, and then remove the bearing plate
from the end plate. The bearing plate
should come off relatively easily, and the
seal should stay with it.
`
NOTICE : Be careful to avoid damaging
the seal as it slides off of the rotor shaft.
In addition, be careful not to damage the
gasket between the bearing plate and
the end plate.
4. Unbolt the end plate, and then remove it