Dimplex DAC12AC Especificaciones descargar pdf (Pagina 7)

Dimplex Thermal Solutions 1800-YOU-KOOL

Visually check for fluid leaks throughout

system. Physically check for loose pipe fittings

or hoses. Ensure that no plumbing parts are

wearing, cracking, or chafing.

5. Check voltage & amp draws

Check for proper incoming voltage and current

draws on all motors and heaters. Refer to the

chiller’s electrical schematics or the motor

nameplate for proper voltage and amperage

ratings. Readings should be within +/- 10% of

the nameplate and have a maximum difference

of +/- 2% between each phase.

6. Inspect mechanical components

Check mechanical components of the chiller for

signs of wear or over-heating. Metallic sounds

or other excessive noise could indicate a

problem with the chiller. Discolored paint or

metal could be a sign of a motor under

excessive load and over-drawing current. Keep

all components with lubrication fittings properly

filled according to the nameplate data or

information tag.

7. Check all wiring

Ensure the chiller’s main power disconnect is

OFF. Check the electrical box and all junction

boxes for any loose or damaged wiring.

Replace any wiring that could cause problems

with shorting or unintentional grounds.

8. Inspect/test refrigeration system

Check the inside of the chiller for evidence of

refrigerant leaks. Spots of oil inside of the

chiller or refrigeration lines covered in oil could

indicate a possible leak. Have a certified

refrigeration technician check the refrigeration

system for proper operation. The technician

should leak check the unit, monitor operating

pressures, and adjust as needed.

 For more information, contact the DTS

Service Department 24 hours a day at 1-

800-YOU-KOOL. Be sure to have model

and serial number ready when calling.

 To purchase spare parts and regular

maintenance items for your chiller,

contact our Parts department at

1-800-YOU-KOOL.

PROCESS FLUID RECOMMENDATIONS:

For recommendations on the correct process

fluid to use in your chilling system, refer to

the manufacturer of the equipment served by

the chiller. Most manufacturers have a

specified type of fluid for correct system

operation. This document should serve as a

guide only when using a glycol and water mixture

for the heat transfer fluid.

USING WATER FOR CHILLER PROCESS:

Dimplex Thermal Solutions recommends the use of

an industrial inhibited glycol and water mixture in

its water chiller systems. The main job of glycol is

to prevent freezing of the process fluid and ensure

consistent flow at the operating temperature.

Inhibited glycols will also prevent formation of

scale and corrosion while protecting metals such

as brass, copper, steel, cast iron, and aluminum.

Water systems treated with inhibited glycol will

also be protected from algae and bacteria that can

grow and degrade the fluid system performance.

Ethylene and Propylene are the two standard

types of inhibited glycols that can be used in DTS

chillers.

 Do not mix different types or brand names of

glycol as this can result in some inhibitors

precipitating out of the solution.

 Do not use automotive grade anti-freeze in the

chiller process. These types of glycols are not

designed for industrial applications and may

cause problems with heat transfer or fluid flow.

Many automotive glycols contain silicate-based

inhibitors that can coat heat-exchangers, attack

pump seals, or form a flow restricting gel.

Check state and local codes when selecting the

process fluid. Certain areas may have

environmental regulations concerning the use and

disposal of glycol or other additives.

ETHYLENE GLYCOL:

Ethylene glycol is the standard heat-transfer fluid

for most industrial applications. This type of glycol

can be used in any application where a low-toxicity

content is not required. Ethylene glycol has

moderately acute oral toxicity and should not be

used in processes where the fluid could come in

contact with potable water, food, or beverage

products.

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Dimplex DAC12AC Especificaciones Pagina 7

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