Psd Installation Advantages; System And Pump Environment - White Knight PSD06 Owner's Manual

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Table Of Contents

Table of Contents

3.2 PSD Installation Advantages

White Knight PSD pumps may be controlled by opening and closing the outlet of the pump and may be

installed in any head pressure situation up to dead-head. Dead-head occurs when air supply pressure

and the liquid line (head) pressure are equal. Dead-head conditions allow for no flow. Under dead-head

conditions the PSD will cease to cycle (limiting wear) until conditions change allowing for flow.

All damage caused by passing solids (wafer shards, etc.) is coverable under warranty when your pump

is used in conjunction with a White Knight Catcher™ pre-pump filter.

White Knight PSD pumps are capable of running dry without damage other than normal wear to the

pump. When a pump is run dry, it cycles faster than normal, accelerating the rate of "normal wear".

3.3 System and Pump Environment

Operation of the point of 5 PSD06 requires class 4 quality air for particles, moisture, and oils.

(maximum particle size 15 microns, 3° C Dew 5 mg/mᵌ) per ISO8573 – 1.

Any system used to pump flammable solvents should be properly grounded. A test from River's Edge

on using isolative pumps to pump flammable liquids indicated that the liquid itself must be grounded

and that other procedures should be followed. A copy of the test is available upon request from

White Knight.

For slurry applications, White Knight recommends use of the PSD UH pump.

The boiling point of a liquid is reduced under vacuum (suction) conditions. Due to the vacuum caused

by a pump, liquid could boil in the inlet line of the pump when it is not boiling in the tank (or another

supply reservoir). Placing the pump as close as possible to the tank and with as little vertical lift as

possible (the pump being flooded by gravity is ideal) minimizes boiling in the inlet line. Boiling of the

liquid in the inlet line causes a pump to "race" and accelerates the wear of the pump. Boiling liquids may

cause cavitation to occur. Damage to wearable or non-wearable components of the pump caused by

cavitation is not covered under warranty.

When running the PSD in submerged mode, the exhaust air must be sealed and redirected above the

surface of the media. Take care that all pump parts (air side and wet side) are resistant to the media

being used. It may be necessary to mount the pump to the bottom of the tank. Operating this pump

while submerged requires use of a remote muffler adaptor kit.

The PSD may be operated safely in low temperature applications. Take care to avoid freezing or

crystallization of the fluid inside or outside of the pump. Running the pump at temperatures below

freezing may accelerate the wear of the elastomer components within the pump. In applications where

the media or pump temperature varies, torque values (tension) of the manifold and head bolts must be

monitored. TE versions of the PSD Series pumps can be operated at temperatures up to 100°C

(212° F). UH versions of the PSD Series pumps can be operated at temperatures up to 70°C (158°F).

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Head Pressure / Dead-Head

Passing Solids

Running Dry

Clean Dry Supply Air (CDA)

Flammable Solvents

Abrasive Slurries

Pumping Liquids Near Boiling Point

Running a Submerged Pump

Temperature

9/14/2022 Version 1.1.6

187 E. 670 S., Kamas, UT 84036

435.783.6040 888.796.2476