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AT 19-98
EVAPCO AT 19-98 User Manual
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31
FAN & FILL
CASING SECTIO
N
PAN SECTIO
N
AT
/
US
S
/
UB
T
1
2
'
&
1
4
'
W
ID
E
C
E
LLS
FRAMED AI
R
INLET LOUVER
WATER OUTLET
CONNECTIO
N
SUCTION
HO
OD
& STRAINER
MAKE-UP VALV
E
WITH
ADJUSTABLE FLOA
T
COLD WATER BASI
N
AIR INLE
T
LOUVER MEDI
A
FAN SCREEN
FAN SCREEN SUPPOR
T
FA
N
ACCE
SS
DO
OR
TEAO FAN MOTOR
DRIF
T
ELIM
IN
ATOR
S
FILL
WATER DISTRIBUTION
SPRAY
BRANCH
ME
CHANICAL
EQ
UIPM
ENT SUPPOR
T
SLIDING MOTOR BASE
ALUMINUM FAN SHEAVE
FAN BELT
FAN CYLINDER
A
T / UA
T - 3 m and 3,6 m WIDE CELLS
30
32
Table of Contents
Default Chapter
2
Table of Contents
2
Introduction
3
Safety Precautions / Remaining Risks
3
Installation Precautions
4
Storage Precautions
4
Label on the Casing Section(S)
4
Checklists
5
Initial and Seasonal Start-Up Checklist
5
Maintenance Checklist
6
Seasonal Shut-Down Checklist
7
Basic Cooling Tower Sequence of Operation
8
Fan System
9
Fan Motor Bearings
9
Fan Shaft Ball Bearings
9
Recommended Bearing Lubricants
9
Fan Shaft Sleeve Bearings
10
Fan Belt Adjustment
10
Fan and Motor Sheave Alignment
11
Fan System Capacity Control
12
Fan Motor Cycling
12
Two Speed Motors
12
Variable Frequency Drives
12
Identify and Lock-Out Harmful Resonant Frequencies
13
Recirculated Water System Routine Maintenance
13
Suction Strainer Assembly
14
Cold Water Basin
14
Operating Water Levels
14
Water Make up Valve
15
Drift Eliminators
15
Pressurized Water Distribution System
15
Bleed-Off Valve
16
Water Treatment and Water Chemistry
17
Bleed or Blowdown
17
Galvanized Steel - Passivation
17
Water Chemistry Parameters
18
Control of Biological Contamination
18
Gray Water and Reclaimed Water
19
Air Contamination
19
Stainless Steel
19
Maintaining the Appearance of Stainless Steel
20
Cleaning Procedures for Stainless Steel
20
Cold Weather Operation
21
Troubleshooting
25
Replacement Parts
28
AT/UAT - 1,2 M Wide Units
29
AT/UAT - 2,4 and 2,6 M Wide Cells
30
AT/UAT - 3 and 3,6 M Wide Cells
31
AT/UAT - 4,2 M Wide Cells
32
LPT - All Models
33
LSTE - 1,6 M Wide Units
34
LSTE - 2,4 and 3 M Wide Units
34
Pmtq
36
AT/UAT with Super Low Sound Fan - 2,4 and 2,6 M Wide Cells
37
AT/UAT with Super Low Sound Fan - 3; 3,6 and 4,2 M Wide Cells
38
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EVAPCO AT 19-98 Specifications
General
Brand
EVAPCO
Model
AT 19-98
Category
Accessories
Language
English
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