DCI C1103, Service Maintenance Manual

Unpacking

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C1000 Series Service & Maintenance Manual

Maintenance

Maintenance

SECTION III

Unscrew the 

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 lter bowl by turning counter-clockwise. Lower the 

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 lter bowl to access the 

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 lter element contained inside. The 

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 lter element is held in place with an O-ring and 

internal ridges located in the bowl. Replace with DCI Part Number 2006, and reassemble 
the 

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 lter bowl. Turn the dryer bypass valve to the ON position and check compressor for 

proper operation by turning the power switches on. 

NOTE: A “popping” relief valve indicates a clogged coalesing element OR 
the Dryer Bypass valve is closed. 

B.   Coalescing Filter Element

The coalescing 

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 lter element should be checked with the compressor motors running. If 

the indicator located on the top of the 

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 lter housing remains GREEN, the 

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 lter element has 

additional useful life. However, if the indicator turns RED, the element should be changed. 
To change the element, 

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 rst turn off the compressor motor switches. Then turn off the 

Dryer bypass valve as shown in (Fig. E). With dryer bypass valve in OFF position, press the 
TEST button on the time operated purge valve to bleed pressure off of the drying system. 
Depressurization of the drying system can be con

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 rmed by reading the drying system 

pressure gauge located on top of the drying chamber. 

WARNING

: DO NOT ATTEMPT TO SERVICE WITH SYSTEM PRESSURIZED.

Fig. D

Fig. E

ON

OFF

COMPRESSOR MAINTENANCE SCHEDULE

    Maintenance Item                                               Frequency                       
Intake Filter Elements 

Every Six Months (semi-annually)

Coalescing Filter Element 

Every 90 Days

Time Operated Purge Valve   

Every 60 Days

Tank Drain 

Every 90 Days

A.   Compressor Head Intake Filter Elements

Dirty intake 

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 lter elements reduce the amount of air the compressor can take in. This 

reduces air output and increases the load of the motors. Every six months, remove 
the intake 

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 lter cover as shown in (Fig. D), to check for excessive dirt or discoloration. 

Replace with DCI Part Number 2012 if needed.  The 

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 lters are located on the rear of each 

compressor cylinder.

MAINTENANCE

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