Kruger RDA Series Instruction manual

General Instructions
(Roof Exhaust Fan)
IGB011.E2/1102
RDA-RDC Series

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.
Make sure the foundation or mounting arrangement and the duct
connections are adequately designed in accordance with recognized
acceptable engineering practices and with the fan manufacturer’s
recommendations.
Check and tighten all hold-down (securing) bolts.
Check the fan assembly and bearings for proper grounding to prevent static
electricity discharge.
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
that all set screws and hold-down bolts.

INSTALLATION
•The unit can be installed on almost any type of roof, flat, pitched (max. 10°) or decking.
•Inlet ductwork should be free from obstruction.
•Avoid sharp bends at inlet.
•Installing roof ventilators
Max 10°
Section A Mounting bolts Rubber plate 3mm thick
SECTION A
Roof top base - GI
Min.
150
50
Timber cill
Purlin
Trimmer
Min.
150
Timber Curb
Deckin
g
Roo
f
Concrete Roo
f
Fabricated Metal
Trimmer Purlin
Min.
150
Deckin
g
Roof
–
Metal Upstand
10°
130
Pitched Roo
f

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.
KRUGER GROUP OFFICE
KRUGER GROUP (VENTILATION)
SINGAPORE SINGAPORE
Kruger Ventilation Industries Pte Ltd Kruger Engineering Pte Ltd
No. 17 Tuas Avenue 10 No. 17 Tuas Avenue 10
Singapore 639141 Singapore 639141
Tel.[phone] - Fax [phone] Tel. [phone] - Fax [phone]
MALAYSIA THAILAND
Kruvent Industries (M) Sdn Bhd Kruger Ventilation (Thailand) Co. Ltd
Lot 8, Jalan Perusahaan 2 1/19 Moo 2 Rama II Rd, Tasai Mueng
Batu Caves Industrial Area, 68100 Batu Caves Samuthsakorn 74000, Thailand
Selangor Tel. [phone] - Fax [phone]
Tel. [phone] - Fax [phone]
BEIJING GUANGZHOU
Bejing Kruger M&E Equipment Co. Ltd Guangzhou Kruger M&E Ind. Ltd
No. 1A Fuyuan South Road, Beijing No 1270 Maogang Road, Huangpu
Economical and Technological Development Guangzhou, P.R. China 510700
Area, Beijing China 100176 Tel. [phone] - Fax [phone]
Tel. [phone] - Fax [phone]
HONG KONG SHANGHAI
Kruger Ventilation (Hong Kong) Limited Shanghai Kruger M&E Industries Ltd
Flat B, 9/F, Yeung Yiu Chung (No. 8) Industrial No.500 Yuanguo Road, Anting, Jiading, Shanghai
Building, 20 Wang Hoi Road, Kowloon, Hong Kong 201814 P.R. China
Tel. [phone] - Fax [phone] Tel. [phone] - Fax [phone]
WUHAN TAIPEI
Wuhan Kruger M&E Industries Ltd Kruger Ventilation (Twn) Co. Ltd
108 Fangjicun, Yangyuan Street No. 157, Ping-an Rd, Hengfeng Village,
Wuhan, P.R China 430063 Dayuan Shiang Taoyuan County 337, Taiwan (ROC)
Tel. [phone] - Fax [phone] Tel. [phone] - Fax [phone]
PHILIPPINES AUSTRALIA
Kruger Ventilation Industries Phils. Inc Kruger Ventilation (Australia) Pty Ltd
FAPI Compound, E. Rodriguez Ave. 4 Blackfriar Place, Wetherill Park
Tunasan, Muntinlupa City, Philippines 1773 NSW 2164, Australia
Tel. [phone] - Fax [phone] Tel. [phone] - Fax [phone]
INDONESIA INDIA
P.T KrugerIndo Adhiteknik Kruger M&E Ind. (India) Pvt Ltd
Ruko Mahkota Mas Blok C No. 20 Pardhy House 1st Floor
Jl. M.H. Thamrin – Cikokol Tangerang 15117 Junction of Hanuman Road & MG Road
Tel. [phone] - Fax [phone] Vile Parle (East) Mumbai 57
Tel. [phone] – Fax [phone]
KOREA
Neomate Technology&Consulting Co. Ltd
No. A-407-1, Ansung B/D, 410-13
Shindorimdong, Kuro-Gu, Seoul, Korea
Tel. [phone] - Fax [phone]