Rotel RKF-100 Owners manual

Owner’s manual

RFK-100

Cooling Fan Kit

Thank you so much for your decision to purchase the

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model RFK-100 Cooling Fan Kit. We take enormous pride
in the design and build quality of all of our products
and we are confi dent that our provide you with many
years of enjoyable and product will trouble-free service.
Should you have any need to call upon our services please
feel free to contact us at the address shown at the end of this
booklet; or, of course, you can contact the dealership
from which you purchased the product. Full details of
the warranty coverage provided by Rotel can be found
at the end of this booklet.

Safety Instructions

1.

Important Safety Instructions! Please read
all the safety and operating instructions shown
in this manual before operating this equipment.

9. Do not use attachments not recommended in this

owner’s manual as they may cause hazards.

10. Do not use the equipment near water; for example
near a bathtub, washbowl, kitchen sink, a wet basement,
swimming pool, etc. This product is meant for indoor use only.

11. Do not place the product on an unstable cart, stand
tripod, bracket or table. The equipment is heavy and
should it fall, it could cause serious injury to a person
and/or serious damage to the equipment.

Caution For Installation

1. The dealership from which you purchased the product
is an expert on custom installation procedures and can
provide invaluable advice to help you make an aesthetically
pleasing and trouble free installation.

2. The lightening fl ash within an equilateral triangle shown
above is intended to alert you to the presence of uninsulated
‘dangerous voltage’ within the product’s enclosure that
may be of suffi cient magnitude to constitute an electric shock.

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3. The exclamation point within an equilateral triangle
shown above is intended to alert you to the presence of
important operating and maintenance (servicing) instructions
in the literature accompanying this appliance.

4. Please retain this manual in a safe place for future
reference about safety and operating matters.

5. Adhere to all warnings and follow all operating instructions.

6.

Warning: To reduce the risk of fi re or electrical
shock, do not expose this equipment to rain or
moisture.

There are no user serviceable parts inside. Refer
servicing to qualifi ed personnel.

7.

Caution: To prevent electrical shock do not use
this (polarized) plug with an extension cord,
receptacle or other outlet unless the blades can
be fully inserted to prevent blade exposure.

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Caution For Connections

1. Connect this equipment only to the type of AC
power source as marked on the unit. Always route AC
power cords so they are not likely to be walked on, or
tripped over, or where they may be pinched by items
placed on or against them. Always pay particular attention
to cords at plugs and/or convenience receptacles, and
at the point where they exit from the product.

2. Do not defeat the inherent design features of the
polarized plug. Non-polarized line cord adapters will
defeat the safety provided by the polarized AC plug.
If the plug should fail to fi t, contact your electrician to
replace your obsolete outlet. Do not defeat the safety
purpose of the grounding-type plug. If you use this product
in a country which only has two slotted receptacles in
the house, you must use a three-pin adapter plug to earth
ground which is the “E” (earth pin) of the power cord
connected to this product.

3. Do not overload wall outlets, extension or integral
convenience receptacles, as this could result in a risk of
fi re or shock.

Operating Voltage

The Fan System is factory-set for 110V, 120V or 230V AC
operation at either 50 or 60 Hz, according to the
country for which the unit was manufactured (230V
in European Union countries, in compliance with CE
regulations). The operating voltage cannot be changed
by the user and any attempt to do so will void the warranty.

8. For added protection for this product during a lightening
storm or when it is left unattended and unused for long
periods of time, it is recommended that you unplug the
unit from the wall outlet. This will prevent damage to the
product due to lightening or power line surges.

Care of the Product

Clean the product by dusting with a dry cloth. Do not
permit objects of any kind to be pushed and/or fall into
the product through the enclosure openings.

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General Description

The RFK-100 is a multi-directional fan system that uses three

4.75-inch (120 mm) whisper quiet fans, the speeds of
which are governed by thermal sensing circuitry. The
RFK-100 is designed to be used in three different formats

-intake/blow/exhaust air. The required mode can be
confi gured locally according to the cooling requirements
of your system.
The RFK-100 has many other features and functions that
are all described in the following pages.

Front Panel Description

The (removable) rack mountable front panel houses a switch
for controlling the on/off and auto functions. A blue LED
indicates when the unit’s fans are actually working.

Behind the grille front is a removable air-fi lter pad.

It is important to note that the only time the switch
needs to be in the ‘on’ position is during an initial
test when the fans will be operating at their
maximum speed. Once the RFK-100 has completed
its test, it is recommended that the switch be
placed in its ‘auto’ position. In this mode neither
the fans nor the LED will operate until the selected
ambient temperature is reached.

Should you want to use one or more RFK-100’s within the
same location you can synchronize the units by using
the ‘sync’ switch. For this situation you should use the
‘out’ jack from one unit (which then becomes the ‘master’)
and go into the ‘in’ jack for the second unit (which then
becomes the ‘slave’). The two units will now be ‘in sync’
and will start to work in unison once the prescribed
initial temperature of the ‘master’ unit has been reached.

Note that in this type of multi-unit installation all of the
internal temperature sensors of the ‘slave’ units are defeated.

Fan Auto-On Temperature

This switch enables you to pre-select one of two temperature
settings for activating the RFK-100. The low setting is 95
degrees Fahrenheit (35 degree Celsius) and the high
setting is 104 degrees Fahrenheit (40 degrees Celsius).
This important feature ensures that the fans only work
above the selected ambient temperature.

If you want to want to exhaust the hot air to the outside
you will need to remove the two ‘plugs’ and attach
fl exible tubing (supplied by Rotel). Please see page 3
for a fuller description of this feature.

Rear Panel Description

The following description identifi es each of the main controls
/connections and follows the rear panel from left to right.

Temperature Sensor

This input enables you to connect the (supplied) pigtail
sensing cord. The magnetized ‘head’ should be placed
on the ‘hot spot’ of your installation whereupon it will
measure the ambient temperature, which in turn will govern
the speed of the three fans.

Please note that there is also an in-built sensing device
located on the underside of the chassis that is by-passed
if the pigtail sensor is used. If the pigtail sensor is not
used, then the in-built sensor will automatically activate
once the selected minimum temperature has been reached.

Trigger In/Out 12VDC Mode

With the mode switch in the 12V position, and the ‘in’
input being used, the RFK-100 will move into its ‘auto’
mode whenever a 6V to 15V input signal is supplied
and the prescribed initial temperature has been reached.

Rotel of America

54 Concord Street

North Reading, MA 01864-2699

USA

Phone: [phone]

Fax: [phone]

Rotel Europe

Dale Road

Worthing, West Sussex BN11 2BH

England

Phone: [phone]

Fax: [phone]

www.rotel.com

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How To Confi gure The RFK-100 For

Different ‘Air-Direction’ Flow

The RFK-100 is a versatile system that enables you to confi gure the direction of the airfl ow in many different

ways according to the specifi c needs of your installation.

Be sure to disconnect the power supply before removing the top cover.

Front
Exhaust

Rear
Exhaust

LOOSEN SCREWS ON BOTH SIDES AND LOWER INSIDE

1

FAN ASSEMBLY TO BOTTOM POSITION AND RETIGHTEN

REMOVE TOP COVER AND PLACE FOAM BLOCK

2

BEHIND FRONT PANEL TO BLOCK AIR FLOW

LOOSEN SCREWS ON BOTH SIDES AND LOWER INSIDE

1

FAN ASSEMBLY TO BOTTOM POSITION AND RETIGHTEN

SCREW PLASTIC

2

COVER OVER TO
COVER VENTS

SQUEEZE FOAM
CYLINDERS AND

3

INSERT IN BOTH
REAR HOLES TO
BLOCK AIR

REPLACE TOP COVER

3

AND SCREW PLASTIC
COVER OVER AIR VENTS

SCREW AIR TUB I NG I N REAR PANEL
HOLE FOR TWO TURNS T O SECURE.

4

USE TWO TUBES FOR MAXIM UM
VENTING OR BLOCK AIR IN SECOND
HOLE WITH FOAM CYLINDER A S
SHOWN ABOVE.

Top Exhaust

(Front Entry)

Top Exhaust

(Bottom Entry)

LOOSEN SCREWS ON BOTH SIDES AND RAISE INSIDE

1

FAN ASSEMBLY TO TOP POSITION AND RETIGHTEN

REMOVE TOP COVER AND PLACE FOAM BLOCK

2

BEHIND FRONT PANEL TO BLOCK AIR FLOW

SQUEEZE FOAM
CYLINDERS AND

3

INSERT IN BOTH
REAR HOLES TO
BLOCK AIR

SCREW PLASTIC COVER

2

OVER BOTTOM COVER VENTS

SQUEEZE FOAM
CYLINDERS AND

3

INSERT IN BOTH
REAR HOLES TO
BLOCK AIR

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LOOSEN SCREWS ON BOTH SIDES AND RAISE INSIDE

1

EMBLY TO TOP POSITION AND RETIGHTEN

FAN A

3