Kruger APL Series Instruction manual

General Instructions
(Propeller Fan)
IGB015.E3/1911
APL Series
1
APN
-

This manual is to assist the engineer to avoid the most common fan problems caused by improper storage,
installation, operation and maintenance. HANDLING AND MAINTENANCE SHOULD ALWAYS BE
PERFORMED BY EXPERIENCED AND TRAINED PERSONNEL.
RECEIVING, HANDLING AND STORAGE
Rough handling during shipment and improper storage can cause damage that is not noticeable until the fan
is in operation. This can be avoided with proper storage and handling techniques.
Fan should be hoisted with slings placed around the fan housing. Touch up the scratch coated surfaces
during lifting, to prevent corrosion to occur at this area. Store the fan in a clean and dry place, preferably
indoor to ensure fan shaft, bearing and fan casing are protected against dust and corrosion. Do not store the
fan in a location where it will be subjected to vibration. This can cause the internal surface to rub against
each other and damage the bearings.
START-UP CHECK LIST
Before putting any fan into initial operation the manufacturer’s instruction must be followed. Complete the
following checklist to make sure that the fan is ready to run.
Lock out the primary and all secondary power sources.
Ensure that all fastener, particularly impeller fastener, are tight prior to
start-up. Do not re-use locking fasteners.
Regularly check impeller fastener for tightness.
Spin impeller to see whether it rotates freely and is not grossly out of balance.
Inspect impeller for correct rotation for the fan design.
Properly secure all safety guards.
Switch on the electrical supply and allow the fan to reach full speed.
Check carefully for :- (1) Excessive vibration
(2) Unusual noise
(3) Proper amperage and voltage values
If any problem is indicated, SWITCH OFF IMMEDIATELY. Lock out the
electrical supply, secure the fan impeller if there is a potential for wind
milling. (impeller turning due to a draft through the system).
Check carefully for the cause of the trouble and correct as necessary.
The fan may now be put into operation but during the first 8 hrs of running, it should be periodically
observed and checked for excessive vibration and noise. Checks should be make of motor input current and
motor & bearing temperature to ensure that they do not exceed manufacturer’s recommendation. After 8 hrs
of operation, the fan should be shut down to check the following items :-
(1) All set screws and hold-down bolts
(2) Bearing housing temperature
2

3
INSTALLATION
Ensure that suitable fastener is used for each of the mounting holes in the panel.
Ensure that the fan panel and drive components are not bent or twisted during installation.
Fan should be installed so that any obstructions will not be within 1 Diameter of the fan inlet and outlet.
Ensure that the fan orientation is correct for the required air flow direction.
Electrical Connection
Before carrying out any installation or wiring of the range ensure that the mains electrical supply is
disconnected.
Before making any electrical connections ensure that the voltage and frequency of the mains electrical supply
matches that of the fan data plate label (maximum permissible deviation of voltage and frequency +/- 5%).
All models must be wired in accordance with the enclosed instructions and the direction of rotation must be
checked.
The earth connection must be connected and checked for continuity before leaving the installation.
In addition it is important to check that the wires within the terminal block/box are separated whereby a
minimum of 10mm distance (at 400 volts) and that the wires are correctly and firmly tightened within the
terminal block and that the connection box lid is required.
Impeller
All APN fans include a dynamically balanced impeller. The impellers with adjustable pitch angle have been
factory set to the correct blade angle of operation. UNDER NO CIRCUMSTANCES MUST THE BLADE ANGLE BE
ADJUSTED OR CHANGED, OTHER THAN BY AN KRUGER APPROVED ENGINEER.
ROUTINE MAINTENANCE
Maintenance should always be performed by experienced and trained personnel. Do not attempt any
maintenance on a fan unless the electrical supply has been locked out or tagged out and the impeller has
been secured.
Under normal circumstances, handling clean air, the system should require cleaning only about a year.
However, the fan and system should be checked at regular intervals to detect any unusual accumulation.
The fan impeller should be specially checked for build-up of material or dirt which may cause an Imbalance
with resulting undue wear on bearings and belt drives. A regular maintenance program should be established
as needed to prevent material build-up.
Periodic inspection of the rotating assembly must be made to detect any indication of weakening of the rotor
because of corrosion, erosion, or metal fatigue.
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(For APN only)

R U G E R G R O U P
(
V E N T I L A T I O N
)
• THAILAND (Regional HQ) • AUSTRALIA
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Chetsadawithi Road, Khok Kham Mueng, Samuthsakorn 74000, Thailand Tel. [phone]
Tel. [phone] - Fax [phone] Fax. [phone]
Website: www.krugerfan.com Email: [e-mail]
·BEIJING) • CHINA (GUANGZHOU)
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Singapore 627564 Dayuan Shiang Taoyuan County 337, Taiwan
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• THAILAND • VIETNAM
KRUGER VENTILATION IND. (THAILAND) CO. LTD KRUGER VENTILATION INDUSTRIES (VIETNAM) CO. LTD
30/105 Moo 1, Sinsakorn Industrial Estate, Lot A7. 2-4, C2 Road, Thanh Thanh Cong IZ,
Chetsadawithi Road, Khok Kham Mueng, Samuthsakorn 74000, Thailand Trang Bang Dist. Tay Ninh Province, Vietnam
Tel. [phone] - Fax + 662 1050370-2 Tel. [phone]/02 - Fax [phone]
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CHINA (