Gardner Denver AUTO SENTRY EAU99P - Figure 4-9 - Control Schematic - Compressor Fully Unloaded - Low Demand Mode Switch on

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Figure 4-9 – CONTROL SCHEMATIC – COMPRESSOR FULLY UNLOADED – LOW DEMAND MODE SWITCH ON

208EAU797-B

(Ref. Drawing)

Main Page

Maintain Compressor Reliability and Performance with2
Genuine Gardner Denver Compressor Parts and Support Services2
Instructions for Ordering Repair Parts2
Warning - Prohibition - Mandatory Label Information3
Safety Precautions5
Table of Contents6
Index7
List of Illustrations9
Section 1, General Information10
Figure 1-1 - Compression Cycle10
Figure 1-2 - Starter Box11
Figure 1-3 - Package - Controller & Starters11
Figure 1-4 - Package - Drive Motor & Air Filter12
Figure 1-5 - Package - Oil Filter, Oil Level Gauge, Mixing Valve12
Figure 1-6 - Package - Air/Oil Flow Diagram13
Section 2, Installation14
Figure 2-1 - Typical Compressor Room15
Figure 2-2 - Air Flow Chart15
Figure 2-3 - Cold Weather Installation17
Figure 2-4 - Inlet Line Lengths18
Figure 2-5 - Heat Exchanger Approximate Water Flow20
Figure 2-6 - Aftercooler Approximate Water Flow20
Figure 2-7 - Series Piping21
Figure 2-8 - Parallel Piping22
Section 3, Starting & Operating Procedures25
Section 4, Controls & Instrumentation28
Figure 4-1 - Schematic Tubing Diagram29
Figure 4-2 - Blowdown Valve30
Figure 4-3 - Minimum Discharge Pressure/Check Valve30
Figure 4-4 - Inlet Valve31
Figure 4-5 - Shuttle Valve32
Figure 4-6 - Turn Valve Actuator (Sectioned)32
Figure 4-7 - Control Schematic - Compressor at Full Load35
Figure 4-8 - Control Schematic - Compressor Fully Unloaded - Low Demand Mode Switch off36
Figure 4-9 - Control Schematic - Compressor Fully Unloaded - Low Demand Mode Switch on37
Figure 4-10 - Wiring Diagram - (Wye Delta, ES+ Controller, Air-Cooled)38
Figure 4-11 - Wiring Diagram - (Wye Delta, ES+ Controller - Water Cooled)39
Section 5, Lubrication - Oil Cooler, Oil Filter & Separator41
Figure 5-1 - Dew Point Chart °F43
Figure 5-2 - Dew Point Chart °C43
Figure 5-3 - Flow Diagram44
Figure 5-4 - Oil Flow Diagram - Remote Overhead Mounted45
Figure 5-5 - Cooler Drain Detail46
Figure 5-6 - Oil Level Gauge50
Figure 5-7 - Oil Change Interval50
Figure 5-8 - Approximate Oil System Capacities52
Figure 5-9 - Thermostatic Mixing Valve Element54
Figure 5-10 - Water Control Valve56
Figure 5-11 - Oil Separator57
Section 6, Air Filter61
Figure 6-1 - Heavy Duty Air Filter (Standard)61
Section 7, Coupling63
Figure 7-1 - Installation of Coupling Cushions63
Section 8, Maintenance Schedule66
Section 9, Troubleshooting68

Gardner Denver AUTO SENTRY EAU99P - Figure 4-9 - Control Schematic - Compressor Fully Unloaded - Low Demand Mode Switch on

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