Gardner Denver AUTO SENTRY EAU99P - Lubrication, Cooling, and Sealing; Turn Valve Operation

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LUBRICATION, COOLING AND SEALING - Oil is forced by air pressure from the oil reservoir through

the oil cooler, thermostatic mixing valve, and oil filter and discharges into the compressor main oil gallery.

A portion of the oil is directed through internal passages to the bearings, gears and shaft oil seal. The

balance of the oil is injected directly into the compression chamber to remove heat of compression, seal

internal clearances and lubricate the rotors.

TURN VALVE - The turn valve is a rotary helical valve located on the discharge side of the cylinder

toward the inlet end. The valve opens and closes ports in the cylinder which communicates with the inlet

passage. This varies the compressor rotor volume to match the demand for air, thus reducing the part-

load power requirement.

Figure 1-2 - STARTER BOX

Figure 1-3 – PACKAGE – CONTROLLER & STARTERS

201EAU797

(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 - Lubrication, Cooling, and Sealing; Turn Valve Operation

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