High-country-tek HFS-2Q Manual do Utilizador descarregar pdf (Página 32)

Hydraulic Fan System Controller : HFS - 2

Controller Mounting:

The electronic components used in this controller released by HCT, conform to the Commercial temperature range

which is -40° to +75 ° Centigrade. This rating means that the components will work reliably and give a good life span

if the operating temperature is kept within these ( absolute maximum ) limits.

The controllers when in operation do generate and dissipate internal heat. The amount of heat generated is

dependentontheamountofworkthatthecontrollerisbeingaskedtodoaswellasotherfactorssuchassupply

voltage,

ype and voltage of coil bein

driven e.

.c. with

he worst case combination bein

a 24VDC suppl

with a 12

coil.

In order for the unit not to exceed the +75°C maximum operating temp and cause a ‘self-protection’ shut down

situation, the user must mount the controller in a position that is ergonomically preferred especially for visual

inspection and system maintenance and also provide for adequate ventilation to ensure that the unit is cooled to

maintain operation.

In addition to ventilation, the system designer must also look at the mounting arrangement for the cards / controllers

and

aware

that

adequate

space

should

left

around

front

and

behind

allow

the

above

ventilation

take

and

aware

that

adequate

space

should

left

around

front

and

behind

allow

the

above

ventilation

take

effect.

It should be noted that temperatures are ‘Additive’ which means that with a high ambient temperature, the units

internal temperature rise need only be quite small to reach the maximum specified levels.

If controllers are going to be used in High ambient temperature or unusual application areas, please contact the

customer service personnel at HCT for advice on cooling and mounting.

Important Notes:-

• Enclosures should have an ‘IN’ and an ‘OUT’ vent for correct cooling air circulation.

• Mount the controller so the operator can see it if required to do so.

• Use ‘fan-blown’ air wherever possible to increase air exchange rate.

• DO NOT mount controllers in direct sunlight.

Mt tll ith ‘i

g ’ t ll t til ti

•

oun

con

ers

ith ‘

aps

’ t

correc

ven

til

on.

• Do not mount controllers in non-ventilated sealed box’s especially in high ambient areas.

• DO NOT mount controllers ‘face-face’ or densely as this will cause over-heating problems.

• Read the literature and observe the max o

eratin

tem

ures and work to them.

pgpg

• Remember…High temp. ambient air used for ‘cooling’ is not a good solution !!

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