Sheldon Water
Purification Kit
Installation Guide
SHELDON WATER PURIFICATION KIT
SWPK INSTALLATION
Revised: May 8, 2014
Part Number (Guide): 9920698
Sheldon Manufacturing
300 N. 26th Ave
Cornelius, OR 97113
EMAIL: tech@shellab.com
PHONE 1-800-322-4897
(503) 640-3000
INTRODUCTION
The SWPK Sheldon Water Purification Kit is designed to remove particulates and calcium from
water sources for the SHC10, SCH10R, SHC28, and SHC28R Humidity Chambers and their 230
volt variants, as well as the SCO26H and SCO26H-2 Humidified CO2 Incubators*. The kit also
adjusts water pH and water resistance to levels that will not corrode the units’ interiors, or adversely
affect the performance of steamers and other major components. This installation guide covers how
to install the SWPK.
*These units were previously designated the HC9, HC9R, HC30, HC30R, and 2428H.
TAP WATER
This purification kit is intended to purify standard tap water. Do not connect it to a deionized water
source. Use of deionized water will likely cause corrosive damage to major functional components
and the metal interior surfaces of humidity chambers and humidified CO2 Incubators.
WATER OUTPUT EXPECTATION
18 megohm-cm of resistivity can be achieved with the SWPK. The Absorber filter removes free
chlorine, organics, phosphate complexes, and turbidity. The Universal filter removes ionizable
constituents, except free carbon dioxide and silica. The Universal filter reduces the ion
concentration level equivalent to a single distillation.
WATER PRESSURE
The SWPK is designed to work with tap water sources that provide 60 – 70 Pounds per Square
Inch of water pressure. Do not connect the SWPK to sources that exceed 120 PSI!
The regulator should be set to supply 5 PSI to the water filters.
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4.57m (15ft) of Tubing, ¼ inch OD
Filter Cartridge Absorber
Assembly (Replacement)
Filter Cartridge Assembly
Universal (Replacement)
Push-to-Connect Fitting 1/8 Inch
NPT, for ¼ Inch OD Tubing
Push-to-Connect Fitting 1/4 Inch
NPT, for ¼ Inch OD Tubing
Push-to-Connect Elbow, 1/8 Inch
NPT Pipe, for ¼ Inch OD Tubing
4 Self-Tapping Sheet Metal
Screws
Water Source
Regulator
Absorber
Filter
Universal
Filter
Push-to-Connect
Fitting
(Back of the Unit)
Valve
Water Flow
SWPK INSTALLATION
COMPONENTS
The SWPK Assembly comes provided with the following components:
Note: All parts numbers may be subject to future revisions.
WATER TUBING
The SWPK is provided with a length of approximately 4.57 meters (15 feet)
of black, 1/8 inch ID ¼ inch OD tubing. This tubing is intended to be cut by
the end-user. It should be used to connect the SPWK output to the push-toconnect adaptor on the incubator or humidity cabinet.
A section of the line can also be used to connect the chamber’s or
incubator’s condensation drain to a collection vessel or drainage system.
The end-user is responsible for providing an adaptor and tubing to connect
their water source to the SWPK’s ¼ inch push-to-connect regulator.
Please see the plumbing diagram on the next page.
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SWPK INSTALLATION
Plumbing Diagram
FILTER REPLACEMENT
The black Absorber filter is an active charcoal filter. It will last six (6)
months to (1) one year depending on the water quality of your laboratory or
workspace water source, and the humidity setting of the incubator or
humidity cabinet.
The mix-colored universal filter will gradually turn yellow, starting at the
top, and moving to the bottom while in use. The filter’s lifespan is highly
dependent on local water quality, and the filter should be replaced when it
has turned yellow down to the blue replacement line on the filter’s label.
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