Table of Contents
Advertisement
Technical Information
To reassemble the jet:
1
If the center jet rod was removed or loosened during disassembly, thread the
rod back into the boilerplate. The top of the rod should be roughly 1/16" to 1/8"
below the top surface of the inlet flange (inlet plane of the pump). Once
properly located, use the nut near the boilerplate to lock the rod in place.
2
Reassemble the lower stages by stacking them (outside the pump body).
3
Lower the second stage and fractionating tube into the lower jet assembly,
aligning the two slots on the tube with the frame of the jet base. Ensure that the
slots are engaged by attempting to rotate it.
4
Install the second stage jet shield.
5
Install the tie rods through the two holes in the cross member and thread them
into the frame on the jet base.
6
Thread the two nuts on the tie rods. The height of the tie rods should be
adjusted as needed by threading them into the frame of the jet base such that
the rods extend above the nuts by roughly 1/8".
Do not over tighten the nuts on the tie rods. Doing so will distort the cross
CAUTION
member. The rods are meant to hold the assembly together during installation in
the pump.
7
Using the cross member and the appropriate lifting equipment, lower the
entire jet assembly into the pump body, over the center jet rod.
If the pump has been equipped with a thermowell near the bottom of the pump
CAUTION
body, there is a corresponding slot in the jet base for clearance around the
thermowell. Ensure that the slot engages the thermowell to avoid damage
to the thermowell and jet.
8
Reverse steps 1 through 3 above to reassemble the upper jet components.
The hex nut is installed such that the small diameter acts to center the cold cap or
NOTE
halo baffle. Ensure that the hex nut is not installed upside down.
70
High Throughput Diffusion Pumps User Manual
Advertisement
Table of Contents
