Dimplex DC12 Manual de Serviço descarregar pdf (Página 45)

PowerFlex 700L Technical Data

Publication 20L-TD001A 45

Drive Coolant Requirements

Recommended Coolants

The table below lists approved sources and recommended coolants with appropriate corrosion inhibitors

for the drive loop:

Non-premixed coolants require a coolant-to-water mix ratio of 50% by volume.

Important: Since coolant performance slowly degrades over time, the drive loop coolant should be replaced every two years

and/or whenever the loop is drained for servicing.

Corrosion Inhibitor

If an approved coolant is not used, the drive coolant must consist of clean water with a corrosion inhibitor. An approved

corrosion inhibitor is Chemtool, Inc. (www.chemtool.com) part number Watertool 4435-C. The recommended

concentration of the inhibitor is 8-10% by volume. Deionized water is prohibited. Use distilled water or water with less

than 50 ppm concentrations of:

• Sulfate and chloride

• Hard water ions such as Mg++ and Ca++

Ethylene and propylene glycols must be inhibited and silicate free. Use of common silicate-containing, automotive-type

ethylene glycol solutions is prohibited as they may damage the heat exchanger and/or drive and cooling module

equipment.

The drive coolant must be compatible with the following materials:

• Copper

•Brass

• Aluminum

• Arimid fiber gasket with nitrile binder (Garlock, Inc. Blue-Gard 3000

)

Blue-Gard 3000 is a registered trademark of Garlock, Inc.

• Synthetic rubber hose (Parker Hannifan Corp 801 General Purpose Hose)

• Viton seal (Complete Drive only)

Biocide

A biocide may be needed to control biological growth. Use of a biocide is permitted. For specific recommendations,

consult a reputable water treatment company.

Source Coolant

Interstate Chemical

http://www.interstatechemical.com/contact.htm

NFP-50

(1)

; a 50/50 premix of propylene glycol and distilled water

NFE-50

(1)

; a 50/50 premix of ethylene glycol and distilled water

(1)

Available in 5 gallon pails.

Koolant Koolers/Dimplex Thermal Solutions

http://www.koolantkoolers.com/index.php/nic=contact

K-Kool-E

(1)

; ethylene glycol (available premixed with distilled water)

Propylene glycol

(1)

also available

Dow Chemical

http://www.dow.com

Dowtherm

SR-1

(2)

; ethylene glycol

Dowfrost

(2)

; propylene glycol

Dowtherm and Dowfrost are registered trademarks of the Dow Chemical Company

(2)

Not premixed with distilled water, and may not be available in 5 gallon quantities.

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