Gardner Denver AUTO SENTRY EAU99P

To Next Page

To Previous Page

13-10-615 Page 33

COMPRESSOR CAPACITY CONTROL

The capacity of the compressor is controlled by the action of the Turn Valve and the Compressor Inlet

Valve.

The turn valve controls compressor delivery to match demands of 40% to 100% of the compressor’s

maximum capacity. The inlet valve throttles to control compressor delivery to match demands of 0% to

40% of the compressors maximum capacity.

Example with normal setting of 100 PSIG:

Compressor Delivery

Inlet Valve Position

Turn Valve Position

Discharge Manifold

Pressure

(psi)

Full Capacity Open Closed 100

70% Capacity Open 50% Open 100

40% Capacity Open Full Open 100

30% Capacity Closing Full Open 103

20% Capacity Closing Full Open 103

0% Capacity Closed Full Open 103

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 - Page 34

Table of Contents

Related product manuals