Amcot LRC-LNS 운영 및 유지보수 매뉴얼 - 페이지 8
{카테고리_이름} Amcot LRC-LNS에 대한 운영 및 유지보수 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Amcot LRC-LNS 9 페이지. Cross flow cooling tower
페이지 인쇄
Trouble
Noises
And
Vibrations
Power Overloads
Rise in water
temperature
Drop in Water Flow
Water carry-over
11.0 CALCULATION OF MAKE-UP WATER
The gradual loss of circulating water during operation is caused by the following factors:
A. During heat exchange, the contact of cold air and hot water will generate an evaporation loss
due to moisture absorption into air flow. This is known as evaporation loss, which is how
heat exchange is accomplished.
B. As air volume increases the driving force of this current overcomes the gravitational flow of
water fall and causes a small amount of water to be carried out of the tower.
C. When the water is circulating for a long time, solids build up and as this concentration
increases it becomes vital to "bleed" a certain amount of water from the tower which is
known as a bleed loss. This will prevent buildup of contaminants which can affect tower
structure.
11.1
Calculating Evaporation Loss
AMCOT COOLING TOWER CORPORATION OPERATIONS AND MAINTAINENCE MANUAL IS
OWNED BY LIANG CHI (USA) CORPORATION. THE NAME "AMCOT" AND AMCOT PRODUCT
LOGO ARE TRADEMARKS AND ANY REPRODUCTION WITHOUT WRITTEN CONSENT WILL
BE A VIOLATION OF LAW AND SUBJECT TO LEGAL ACTIONS. ALL RIGHTS RESERVED, 1998.
Trouble-Shooting Table
Causes
1.
Loose Bolts
2.
Fan Blade tip making contact with
fan stack
3.
Fan Not Balanced.
4.
Bearing Malfunction.
5.
Motor Malfunction.
6.
Speed Reducer
1.
Excessive drops in Voltage
2.
Improper fan blade angle.
3.
Motor malfunction
1.
Decrease in water flow.
2.
Drop in water level of basin or
distribution pans.
3.
Decrease in air flow
4.
Blockage of inlet louvers
1.
Blockage of Strainer
2.
Water basin level decreases
3.
Inadequate water flow from pump
1.
Excessive Water Flow
2.
Unevenness of water volume in
distribution basin.
3.
Excessive air flow.
Solutions
1.
Retighten bolts
2.
Shut Down, Adjust Motor
Base to provide equal
clearance between fan stack
and fan.
3.
Adjust pitches to equalize
4.
Replace bearings.
5.
Rewind or replace motor.
6.
Check reducer, make sure
well oiled/greased, check v-
belts to be sure they are
tight.
1.
Check power supply.
2.
Adjust pitches to
recommended settings
3.
Replace motor
1.
Check water pump and
pipes for blockage.
2.
Clean distribution pans and
check float valve.
3.
Check fill material for
blockage, check reducer v-
belts, check motor.
4.
Remove debris, be sure
louvers are equal distance
apart.
1. Remove and clean strainer.
2.
Adjust float valve.
3.
Check pump seals and
connections.
1.
Adjust water flow rate
through pumps or with flow
valves.
2.
Clean distribution pan.
3.
Adjust fan blade pitches to
reduce drift loss.