EVAPCO LPT 8812 User Manual

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Table of Contents
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
 PartIdenticationDrawings
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 ................................................................................35
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

EVAPCO LPT 8812 Specifications

General

Brand	EVAPCO
Model	LPT 8812
Category	Accessories
Language	English