OSTBERG CK AC Manual

Directions for use
CK AC/EC

DESCRIPTION
CK is a circular in-line duct fan with backward curved
impeller. The fan is equipped with external rotor indu-
ction AC or EC motor with maintenance-free sealed
ball-bearings. The fanhousing are manufactured from
galvanized steel sheet.
ENGLISH
APPLICATION
• CK is accessible for the user, according to IEC
60335-2-40, to by themselves do the service and
maintenance, according to this Directions for use.
But before this work the unit must be currentless.
With reservation according to IEC 60335-2-7.12
”This appliance is not intended for use by persons
(including children) with reduced physical, senso-
ry or mental capabilities, or lack of experience and
knowledge, unless they have been given supervision
or instruction concerning use of the appliance by a
person responsible for their safety.”
”Children should be supervised to ensure that they
do not play with the appliance.”
• The fan is used for transportation of ”clean” air, mea-
ning not intended for fire-dangerous substances,
explosives, grinding dust, soot, etc.
• To achieve maximum life time for installations in
damp or cold environments, the fan should be ope-
rating continuously.
• The fan can be installed outside or in damp envi-
ronments. Make sure that the fan house is equipped
with drainage.
• The fan is intended to be used at the highest volta-
ge and frequency that’s stated on the label on the
fan.
• The fan can be installed in any position.
This directions for use contains following products: CK AC and EC.
Scan the QR code on the product label or visit www.ostberg.com
for further information about the product.
HOW TO HANDLE
• The fan must be transported in its packing until in-
stallation. This prevents transport damages, scrat-
ches and the fan from getting dirty.
• Attention, look out for sharp edges and corners.
• Avoid extreme heat or cold (temperature range for
storage and transport.

INSTALLATION
• The fan must be installed according to the air direc-
tion label on the fan.
• The fan must be connected to duct or equipped with
a safety grille.
• The fan should be installed in a safe way and make
sure that no foreign objects are left behind.
• The fan should be installed in a way that makes ser-
vice and maintenance easy. N.B.! Consider the
weight and size of the fan.
• The fan should be installed in a way that vibrations
not can be transfused to duct or building. To provi-
de this, use for example a flange.
• Electrical installations must be made by an authori-
zed electrician.
• See Wiring diagram at the lid of the junction box.
• Electrical installation must be connected to a local-
ly situated isolator switch or by a lockable main
switch.
• Control that the fan is installed and connected elec-
trically in the right way, grounded and with motor
protection.
• For single phase fans a residual current device i used
(type A).
AC-MOTOR
• For speed regulation of AC motor a transformer or
thyristor can be connected.
• The AC motor has a built-in thermal contact.
•The capacitor (only for AC motor) has finite life-
time and should be exchanged after 45.000 opera-
tion hours (about 5 years of operation) to secure
maximum function. Defective capacitor can cause
damage.
EC-MOTOR
•Speed regulating of EC
motor can be done with
the built-in potentio-
meter, 0-10 V.
An external potentio-
meter can be connected
to the terminal if neces-
sary. The internal poten-
tiometer should then
be disconnected.
• Some EC motors has tachometer output one pulse
per revolution.
• EMC-COMPATIBLE INSTALLATION OF EXTERNAL
CONTROL LINES: The control cable must not be
longer than 30 m. Screened control cables must
be used when the cable length is longer than
20 m. When using a shielded cable connect the
shielding to one side only, i.e. only to the device
with the protective ground (keep cable short and
with as little inductance as possible!). Pay atten-
tion to sufficient distance from power lines and
motor wires to prevent interferences.
Attention! Ensure correct polarity! Never apply
line voltage to analog inputs!
• The EC motor has electronically thermal-/over-
voltage protection.
ENGLISH

FAULT DETECTION
WARRANTY
MAINTENANCE
OPERATION
For technical data please see the product label.
Before starting, make sure that:
• the current does not exceed more than +5% of what
is stated on the label.
• the connecting voltage is in between +6% to –10%
of the rated voltage.
• no noise appears when starting the fan.
The warranty is only valid under condition that the
fan is used according to this “Directions for use” and
a regular maintenance has been made and record. The
warrantor is responsible only for the operation if app-
roved accessories are used. The warranty does not cover
product failures caused by accessories/equipment from
other manufacturers.
• Before service, maintenance or repair begins, the fan
must be tension free and the impeller must have
stopped.
• Attention, look out for sharp edges and corners.
• Consider the weight of the fan when removing or
opening larger fans to avoid jamming and contu-
sions.
•Attention! Temperatures up to 85°C can be pre-
sent on the controller housing (only for EC motor).
• Waiting period of at least 3 minutes! (only for
EC motor) Because of internal capacitors, danger of
death exists even after switching off the device
through directly touching the energized parts or due
to parts that have become energized due to faults.
The controller housing may only be removed or
opened when the power line has been switched off
and a period of three minutes has elapsed since swit-
ching it off.
• When cleaning and maintaining, the fan always have
to be secured when open, so it can’t fall down and
cause injury.
• The fan must be cleaned when needed, at least once
a year to maintain the capacity and to avoid unba-
lance which may cause unnecessary damages on the
bearings.
• When cleaning the fan, high-pressure cleaning or
strong dissolvent must not be used. Cleaning should
be done without dislodging or damaging the impel-
ler.
• The fan bearings are maintenance-free and should
be renewed only when necessary.
• Notice the weight of the fan when closing after
inspection/cleaning.
• Mount back all details in reverse order. Check that
the fan is closed and locked before starting.
• Make sure that there is no noise from the fan.
1. Make sure that there is power to the fan.
2. Cut the power and verify that the impeller is not
blocked.
3. Check the thermal contact (for AC). If it is discon-
nected the cause of overheating must be taken care
of, not to be repeated. To restore the manual ther-
mal contact, cut the power for a couple of
minutes. If it has automatic thermal contact the
resetting will be done automatically when the
motor has cooled.
4. Make sure that the capacitor is connected according
to the wiring diagram (for AC).
5. If the fan still does not work, the first thing to do is
to change the capacitor (for AC).
6. If nothing of this works, contact your fan supplier.
7. If the fan is returned to the supplier, it must be
cleaned, the motor cable undamaged and a detailed
nonconformity report enclosed.
ENGLISH

ENGLISH
A
B
B
C
Fan size A +-2 B +-2 C +-1
100 277 185 18
125 277 185 15
150 B 299 210 18
150 C 323 248 17
160 B 299 210 18
160 C 323 248 17
200 323 248 18
250 323 248 18
315 350 275 17
Mounting bracket kit for easy suspension of CK contents:
1. 2 pcs mounting bracket
2. 4 pcs screws
ASSEMBLY INSTRUCTION
1.
Mark the
measure of B
on the fan
for the place-
ment of the
mounting
brackets.
2.
Mark the
measure of
C. Start from
the joint of
the fan.
3.
Fasten the
mounting
brackets
with the
self-drilling
screws.
The brackets can be mounted
horizontal everywhere around the
joint of the fan. For right distance between the brac-
kets, see the dimension table (B) and the distance
from the joint to screw-hole (C).

ENGLISH
INSTALLATION INSTRUCTIONS
Installation instructions for exhaust systems for duct fan,
type CK.
Exhaust
system
Exhaust system
Exhaust system for ceiling
Installation with duct clamps for duct fan CK.
Duct clamp, type MK is made of pre-galvanized steel
and is rubber-lined to seal connection and absorb vibra-
tions. The clamp allows the fan to be easily removed for
inspection and cleaning.
Available in sizes: Ø 80, 100, 125, 150, 160, 200, 250,
315, 355, 400, 500 and 630 mm.
Duct clamps
1.
Mark the
measure of A
on the wall or
roof and then
fasten the fan.
2.
Put together
the ducts
and the fan.
3.
Strap the
duct clamps
on each side
of the fan
with the
screws.