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Waterous Eclipse ES CX, Operation And Maintenance

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Waterous Eclipse ES CX Operation And Maintenance Download Page 16

 

 F-1031, Section 2119 

Page 16 of 24 

 

CAFS Control Air Circuits may be operated in three (3) air 
compressor pressure modes: 

UNLOAD, FIXED 

and 

AUTO

. 

The same basic control air circuit is used on all CAFSys-
tem units including both Eclipse™ and Eclipse™ ES mod-
els. 

This instruction includes descriptions and schematics 
showing the interaction of the control air system compo-
nents in each mode as well as explanations of the work-
ings of specific components. 

The status of the control air circuit is also described when 
the air compressor is shutdown. 

 

Table of Contents

 

Air Compressor Pressure Modes

 

 

UNLOAD ....  .........................  .........................  . 17 

 

FIXED ........  .........................  .........................  . 18 

 

AUTO .........  .........................  .........................  . 19 

Air Compressor Shutdown ......  .........................  . 20

 

System Component Functions

 

 

Air Inlet Valve .......................  .........................  . 21 

 

Fixed Air Regulator ..............  .........................  . 22 

 

Piloted Balance Valve ..........  .........................  . 23 

 

Shuttle Valve ........................  .........................  . 24 

 

Control Air Circuit Function 

Electric Auto-Sync Control Panel

IL3012

Summary of Contents for Eclipse ES CX

Page 1: ...hut Down Procedure 9 Compressed Air Foam Operations 9 Compressed Auto Shut Down 9 Service and Maintenance 9 Poly Chain Replacement and Adjustment 10 Calibration Control Air Circuit 12 Troubleshooting...

Page 2: ...and nozzle used for air discharge will be come hot due to the hot air flowing through it Wear protective gloves Also be prepared for noz zle reaction when air discharge and nozzle are opened Air Sourc...

Page 3: ...has a siphon tube that picks up the recovered oil for return to the air compressor The compressor s air output is controlled by a modulating inlet valve The inlet valve is opened and closed by the Au...

Page 4: ...Belt 19 Compressor Oil Sump 5 Belt Adjustment Hardware 19A Safety Relief Valve 6 Air Inlet Valve 20 Oil Temperature Gauge 7 Auto Balancing Valve 21 Oil Temperature Sensor 8 Air Clutch Solenoid 22 Oil...

Page 5: ...of 0 2 and 0 3 are typically ade quate to produce compressed air foam that is formed in a hoseline and used on Class A combustibles Higher set tings will result in a drier appearing foam Lower settin...

Page 6: ...olution from another discharge while pumping com pressed air foam from yet another or varying foam con sistencies expansion ratios from different discharges simultaneously NOTE Monitor compressor inst...

Page 7: ...ler is running the FOAM LED will be lit The FOAM LED will blink when the motor control output is active The LED will be lit and not blink during the initial pump delay or when the system is on but no...

Page 8: ...position 3 Move the Auto Sync control to the AUTO posi tion The air pressure should rise to within plus or minus 5 of the water discharge pressure The Auto Sync system will balance the air and water p...

Page 9: ...Overheat light will illuminate The water pump and foam proportioning systems will continue to operate and are not affected by the compressor shut down To re start perform the follow ing 1 Correct the...

Page 10: ...amage or excessive wear semi annually or more frequently as dictated by the amount of use Belt tension may be checked by applying a 10 12 lb load to the belt mid span between drive and driven sprocket...

Page 11: ...nment in which the unit operates will determine the frequency of air filter replacement In any situation replace at least annually 12 Replace the air oil separator cartridge every 24 months or if the...

Page 12: ...d regulator is performing by varying the compressor speed and monitoring the air pressure gauge The pressure should remain steady at the fixed pressure setting With the final adjustments to the FIXED...

Page 13: ...ge and correct as needed Air inlet trim valve out of adjustment Reference Control Air Circuit Calibration In structions on Page 12 Debris in air inlet trim valve AITV Clean debris from air inlet trim...

Page 14: ...Eclipse Excessive oil consumption Reservoirs overfilled with oil Check oil level while on a level surface Reduce level to middle of the sight glass Flowing in excess of 200 CFM Reduce RPM and flow CA...

Page 15: ...requires repair Water in compressors oil air Leaking oil cooler Isolate the heat exchanger and check for leaks Replace if necessary Typical cause is freez ing Discharge air check valve s malfunctionin...

Page 16: ...wing the interaction of the control air system compo nents in each mode as well as explanations of the work ings of specific components The status of the control air circuit is also described when the...

Page 17: ...ar If the compressor discharge air pressure is above 40 50 psi 2 8 3 4 bar then the control air closes the air inlet valve This causes the control air pressure to drop below 40 50 psi 2 8 3 4 bar the...

Page 18: ...si 10 3 bar When the discharge air pres sure is below the set point 150 psi 10 3 bar then the fixed air regulator closes Now the control air pres sure is not high enough to keep the air inlet valve cl...

Page 19: ...high enough to keep the air inlet valve closed The air inlet valve opens allowing air into the compressor raising the control air pressure above 100 psi 8 6 bar The balance valve opens and closes as n...

Page 20: ...t or have any influence They are basically bypassed The auto sync solenoids are also bypassed and it doesn t matter whether they are opened or closed They have no influence on shutdown Pressure Hazard...

Page 21: ...flow at the compressor discharge To stop the compressor pressure increase or restrict the compressor air flow the air inlet valve needs to close The air inlet valve will close when the control air pr...

Page 22: ...egulator operate in the air control circuit when in the FIXED or AUTO modes Fixed Mode The regulator basically operates as de scribed above If the compressor discharge pressure is above the fixed air...

Page 23: ...Bal ance Valve Open The balance valve can be calibrated or biased via the BTV See control air control circuit cali bration in the maintenance manual How does the balance valve operate in the air cont...

Page 24: ...he CIAP is always 14 5 psia or less and the CDAP is 40 psig or greater minimum pressure valve setting allowing the shuttle valve to stay closed The figure on the right shows the shuttle valve in an op...

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