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EVAPCO AT Series Operation And Maintenance Instructions
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33
Operation
and
Maintenance
Instructions
UT
20’
&
24’
Wide
T
owers
F
AN
&
FILL
CASING
SECTION
F
AN
SCREEN
F
AN
CYLINDER
DRIFT
ELIMINA
TORS
FILL
W
A
TER DISTRIBUTION
SPRA
Y
BRANCH
W
A
TER DISTRIBUTION
HEADER
BOX
W
A
TER INLET
CONNECTION
ACCESS
DOOR
ALUMINUM
F
AN
SHEA
VE
TEAO
F
AN
MOTOR
SLIDING
MOTOR
BASE
F
AN
SCREEN SUPPORT
MECHANICAL
EQUIPMENT
SUPPORT
SUPER
LOW
SOUND
F
AN
P
AN
&
PLENUM
SECTION
AIR
INLET
LOUVER MEDIA
MAKE-UP
VALVE
WITH
ADJUSTABLE
FLOAT
SUCTION HOOD
&
STRAINER
COLD
WATER
BASIN
FRAMED AIR
INLET LOUVER
WATER
OUTLET
CONNECTION
PLENUM
SECTION
LOUVER
ACCESS
DOOR
32
34
Table of Contents
Default Chapter
1
Maintenance Instructions
1
Table of Contents
2
Introduction
3
Safety Precautions
3
Initial Storage And/Or Idle Period Recommendations
3
International Building Code Provision
3
Initial and Seasonal Start-Up Checklist
4
General
4
Initial and Seasonal Start-Up
4
Maintenance Checklist
5
Seasonal Shut-Down Checklist
7
Fan System
7
Fan Motor Bearings
7
Fan Shaft Bearings
7
Recommended Bearing Lubricants
7
Fan Belt Adjustment
8
Fan and Motor Sheave Alignment
8
Fan System Capacity Control
10
Fan Motor Cycling
10
Two Speed Motors
10
Variable Frequency Drives
11
Recirculated Water System Routine Maintenance
12
Cold Water Basin
12
Suction Strainer Assembly
12
Operating Water Levels
12
Water Make up Valve
13
Pressurized Water Distribution System
13
Drift Eliminator Orientation
15
Water Treatment and Water Chemistry of the Recirculated Water System
16
Bleed off
16
Biological Contamination
16
Air Contamination
16
Water Chemistry Parameters
17
Passivation of Galvanized Steel
18
White Rust
18
Use of Soft Water
19
Use of Gray Water
19
Stainless Steel
19
Maintaining the Appearance of Stainless Steel
19
Cleaning Procedures for Stainless Steel
20
Cold Weather Operation
20
Unit Accessories
21
Replacement Parts
23
Part Identification Drawings
24
ICT 4ʼ Wide Towers
24
AT/USS 6ʼ, 8ʼ & 8.5ʼ Wide Towers
25
AT/USS 10ʼ, 12ʼ, & 14ʼ Wide Towers
26
AT/USS 12ʼ, 15ʼ & 17ʼ Wide End Connection Towers
27
AT/USS 20ʼ & 24ʼ Wide Towers
28
AT/USS 28ʼ Wide Towers
29
UT 6ʼ, 7.5ʼ, 8ʼ & 8.5ʼ Wide Towers
30
UT 10ʼ, 12ʼ, & 14ʼ Wide Towers
31
UT 12ʼ, 15ʼ & 17ʼ Wide End Connection Towers
32
UT 20ʼ & 24ʼ Wide Towers
33
UT 28ʼ Wide Towers
34
LPT Units
35
LSTA 4ʼ Wide Units
36
LSTB Units
37
Notes
38
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Operation And Maintenance Instruction
58 pages
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EVAPCO AT Series Specifications
General
Brand
EVAPCO
Model
AT Series
Category
Accessories
Language
English
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