EVAPCO AT Series - Lrc;Lrwb;Eco-LRWB 5 Wide Units

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COIL CASING SECTION

PUMP RISER PIPING

COIL CONNECTIONS

COIL

WATER DISTRIBUTION

PRAY BRANCH

RIFT ELIMINATORS

DRIFT ELIMINATOR

SUPPORT

WATER DISTRIBUTION

SPRAY BRANCH SUPPORT

RECIRCULATOR PUMP/

MOTOR ASSEMBLY

PUMP RISER PIPING

SUCTION HOOD

SUCTION STRAINER

MAKE-UP VALVE

WITH ADJUSTABLE FLOAT

ACCESS DOOR

FAN WHEEL

TEFC FAN MOTOR

MOTOR ACCESS DOOR

FAN BELT

FAN SHEAVE

COLD WATER BASIN

BLEED LINE AND VALVE

FAN WRAPPER

FAN HOUSING

PAN SECTION

LRC/LRWB/eco-LRWB 5’ Wide Units

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Table of Contents2
Introduction3
Safety Precautions3
Terminology3
Initial Storage And/Or Idle Period Recommendations4
International Building Code Provision5
Initial and Seasonal Start-Up Checklist5
General5
Initial and Seasonal Start-Up5
Recommended Maintenance Schedule8
Seasonal Shut-Down Checklist9
Basic Closed Circuit Cooler/Condenser Sequence of Operation10
Fan System11
Fan Motor Bearings11
Fan Shaft Ball Bearings11
Fan Belt Adjustment12
Gear Drives14
Air Inlet14
Coil Inlet14
Fan System - Capacity Control15
Fan Motor Cycling15
Sequence of Operation for Fan Motor Cycling15
Variable Frequency Drives15
Sequence of Operations / Guidelines for Multi-Fan15
Two-Speed Motors16
Speed Motors During Peak Load16
Recirculated Water System - Routine Maintenance17
Suction Strainer in Cold Water Basin17
Cold Water Basin18
Operating Level of Water in Cold Water Basin18
Water Make up Valve19
Pressurized Water Distribution Systems19
Bleed-Off Valve20
Pump (When Supplied)20
Water Treatment and Water Chemistry21
Bleed or Blowdown21
Galvanized Steel - Passivation21
Water Chemistry Parameters22
Control of Biological Contamination22
Gray Water and Reclaimed Water23
Air Contamination23
Cold Weather Operation24
Unit Layout24
Freeze Protection of Recirculating Water24
Freeze Protection of Closed Circuit Cooler Coils26
Unit Accessories27
Cold Water Basin Heaters27
Remote Sumps27
Electric Water Level Control27
Vibration Cut out Switches27
Capacity Control Methods for Cold Weather Operation27
Induced Draft Unit Capacity Control27
Forced Draft Unit Capacity Control28
Ice Management28
Induced Draft Units28
Forced Draft Units28
Troubleshooting29
Replacement Parts32
ATC-E/Atwb/Eco-ATWB 4'X4' & 4'X6' Wide Units34
ATC-E/Atwb/Eco-ATWB 4'X9' & 4'X12' Wide Units35
ATC-E/Atwb/Eco-ATC-A/Eco-ATWB 7' Wide Units36
ATC-E/Atwb/Eco-ATC-A/Eco-ATWB 837
ATC-E/Atwb/Eco-ATC-A/Eco-ATWB 1038
Eco-ATWB-E 8.5' Wide Units39
Eco-ATWB-E 10' & 12' Wide Units40
ESW4 8.5' Wide Units41
ESW4 12' Wide Units42
Eco-ATC-H/Eco-ATWB-H 8.5' Wide Units43
Eco-ATC-H/Eco-ATWB-H 10' & 12' Wide Units44
ESWA 8.5' Wide Units45
ESWA 12' Wide Units46
LSC-E/Lswe/Eco-LSWE 4' Wide Units47
LSC-E/Lswe/Eco-LSWE 5' Wide Units48
LSC-E/Lswe/Eco-LSWE 8' Wide Units49
LSC-E/Lswe/Eco-LSWE 10' Wide Units50
Lrc/Lrwb/Eco-LRWB 3' Wide Units51
Lrc/Lrwb/Eco-LRWB 5' Wide Units52
Lrc/Lrwb/Eco-LRWB 8' Wide Units53
PMC-E/Eco-PMC 5' Wide Units54
PMC-E/Eco-PMC 10' and 12' Wide Units55
PHC-D 12' and 14' Wide Two Side Air Inlet Units57

EVAPCO AT Series - Lrc;Lrwb;Eco-LRWB 5 Wide Units

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