16
04
Operation
Manual 4804 Rev C p/n 004804 0000
A loud rumbling sound is a sign that cavitation is
occurring. It is easily suppressed by raising the
inlet pressure above the vapor pressure of the
sealant at its operating temperature by bleeding
air or another comparable gas into the suction if
opening the attentuation valve cannot be used or
does not bleed in enough air.
When cavitation occurs, the pump sounds as
though it has gravel in it. This noise will commonly
occur when the pressure is low and the air or non-
condensable gas
À
ow is slight. Cavitation should
be reduced or eliminated by bleeding air into the
pump through the attenuation valve. If enough air
cannot be bled into the pump to satisfactorily quiet
the pump, an air bleed valve should be installed.
Non-condensable gas may be recirculated by
adding a return line from the discharge separator
tank to the pump inlet bleed valve.
STOPPING THE PUMP
1. Isolate the pump from the process chamber.
2. Shut off sealant liquid supply. (
See Starting
the Pump on page 14
.)
3. Shut off cooling sealant to the mechanical shaft
seals.
4. Stop the pump.
Summary of Contents for KLRC Series
Page 6: ...iv Table of Contents Manual 4804 Rev C p n 004804 0000 ...
Page 33: ...27 08 Reassembly Manual 4804 Rev C p n 004804 0000 Figure 8 2 Bearing Driver Tool ...
Page 34: ...28 08 Reassembly Manual 4804 Rev C p n 004804 0000 Figure 8 3 Foot Alignment Tool ...
Page 37: ...31 09 Troubleshooting Manual 4804 Rev C p n 004804 0000 NOTES ...
