Agilent Technologies TriScroll 620 Series, Installation And Operation Manual

Page: 14 / 26

DRAFT 1
0/30/14
TriScroll 620 Series Vacuum Pump
14
Mechanical Connections
Pump Location
Locate the pump on a firm, level surface.
Mounting holes provided in the frame can be used to
provide permanent attachment. The rubber mounts on
the frame can be removed if desired.
Rotation of the Pump Inlet
with Respect to the Motor Frame
The standard pump configuration is with the inlet fitting
positioned at the top of the pump as shown in Figure 1 on
page 10. The pump inlet has two alternate positions:
❑
90 degrees clockwise
❑
90 degrees counterclockwise
To rotate the inlet:
1. Remove three (3) M5 screws (item 1 on Figure 3 on
page 11) that secure the cowling (item 2 on Figure 3)
to the scroll module. Remove the cowling.
2. Tilt the pump back so that the rear end of the motor
touches the floor.
3. Remove the four (4) M6 screws (item 8 on Figure 3)
holding the frame (item 7 on Figure 3) and scroll
module together.
4. Axially separate the frame and scroll module.
5. Rotate the module 90 degrees in either direction and
realign the two (2) locating pins on the scroll module
with the mating frame holes. Ensure that the rubber
spider is still on the motor coupling and that the
coupling teeth are properly aligned.
6. Rejoin the scroll module with the frame and install
and tighten the four (4) M6 screws removed in step 3.
7. Reinstall the cowling using the three (3) M5 screws
removed in step 1.
Pump Inlet
Use NW25, or larger, clean vacuum hardware with as
short a length as practical between the pump and the
vacuum chamber.
Use a bellows to provide both vibration isolation and
strain relief between the pump and the vacuum chamber.
Pump Exhaust
A female 1/4" National Pipe Thread exhaust fitting is
located underneath the scroll module. This fitting swivels
360 degrees. Additionally, an NW25 male adapter with
3/8" National Pipe Thread is provided.
To avoid overheating the pump, do not restrict the
exhaust flow with long lengths of small diameter tubing.
Use as short as practical lengths of NW25 diameter, or
larger, hardware.
CAUTION
The pump is a heavy object. To avoid
muscle strain or back injury, use lifting
aides and proper lifting techniques
when removing or replacing.