DCI C1103 Bedienungsanleitung

• (D)C1103

• (D)C1203

• (D)C2106

• (D)C2206

• (D)C3210

C Series

COMPRESSOR

•

1103

•

MPRE

SSO

Compressor Service & Maintenance Manual

92311, Rev. C, 08/13

1 www.dcionline.com www.dcionline.com

Compressor Service, Maintenance, and Parts Manual

Section I: INTRODUCTION

A. General Specifications

Section II: THEORY OF OPERATION

A. While Running

B. Theory of Operation While Not Running

Section III: MAINTENANCE

A. Compressor Head Intake Filter

B. Coalescing Filter

C. Time Operated Purge Valve

D. Tank Drain

Section IV SERVICE REPAIR INSTRUCTIONS

A. Troubleshooting Chart

B. Electrical

1. Replacing Pressure Switch

2. Replacing Power Switch

3. Replacing Compressor Head

4. Replacing Time Operated Purge Valve

C. Pneumatic

1. Replacing Check Valve

2. Replacing Differential Filter Indicator

3. Replacing Automatic Filter Float Drain

4. Replacing Desiccant Chamber

Section V ILLUSTRATED PARTS BREAKDOWN

A. Parts Listing

B. Electrical Schematic

C. Plumbing Schematic

C1000 Series Service & Maintenance Manual

Introduction SECTION I

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Introduction

C1000 Series Service & Maintenance Manual

Introduction

SECTION I

Combination

Wrenches

Blade

Screwdrivers:

Voltmeter

Phillips

This manual contains the necessary information to perform all “ﬁeld serviceable” aspects of the DCI Oil-less Air Compressor line.

Please take the time to read this manual and understand the proper operation and service procedures before attempting to service

this machine. Our unique dryer purge system operates much differently than conventional air compressors. Understanding the

proper operation and design will ensure years of dependable operation.

Below is a listing of the basic tools required to properly service this equipment.

If you have any questions or need assistance in regards to any aspect ot the service and / or repair of this machine, please contact

the DCI Technical Support Department at:

Technical Support

1-800-624-2793

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INTRODUCTION

This manual contains the necessary instructions for the maintenance and/or service of the DCI air compressors.

There are 3 basic conﬁgurations available; single and dual head available in 115V and 230V, and the triple head available in 230V.

NOTE: ALL VOLTAGES +/- 5%

Conﬁgurations

1. Single 1 horsepower compressor head on 20 gal. Horizontal tank. (See Fig. A)

2. Dual 1 horsepower compressor heads on 20 gal. Horizontal tank. (See Fig. B)

3. Dual 1 horsepower heads on 30 gal. horizontal tank. (Not Shown)

Introduction

C1000 Series Service & Maintenance Manual

Introduction

Picture of Single

Horizontal Compressor

Model #C1103 & #C1203

Picture of Dual

Horizontal Compressor

Model # C2106 & #C2206

SECTION I

Fig. A Fig. B

Picture of Triple

Horizontal Compressor

Model # C3210

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C1000 Series Service & Maintenance Manual

Introduction

Model Speciﬁcations

C1103 3

C1203 3

C2106 6

C2206 6

C3210 10

1103

C3210 10

C2106 6

SECTION I

MODEL SPECIFICATIONS

Model CFM @ 80PSI Total HP Tank Capacity Dimensions (inches) Voltage Amps Circuit Breaker

L D H

C1103 3.95 1 20 34 24 29.5 115 13.4 15

C1203 3.95 1 20 34 24 29.5 230 6.7 10

C2106 7.95 2 20 34 24 29.5 115 26.8 30

C2206 7.95 2 20 34 24 29.5 230 13.4 15

C3210 11.85 3 30 46 26 36 230 21.1 30

NOTE: ALL VOLTAGES ARE +/- 5%

MODEL NUMBER MAXIMUM SIMULTANEOUS USERS

NOTE: Number of users based on 1.5cfm @ 80psi per user. Additional equipment such as air abrasion units, blow-guns, and lab equipment should

be factored into the system requirements.

Site Requirement Templates and additional technical information available through our Technical Service Department.

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C1000 Series Service & Maintenance Manual

Theory of Operation

THEORY OF OPERATION

While Running

To start the compressor, the user shall activate the compressor head or heads with the power switches located on the front center

of the machine. The selected motors will then begin to run and build pressure in the tank and piping system.

A. The air is taken in through the intake ﬁlters, located on the rear of each compressor cylinder. The dirt and dust is ﬁltered out

of the intake ﬁlter to 5 microns in this process.

B. The air is then compressed with the pistons in each cylinder, and then travels through the after-cooler (copper) tubing, which

cools the air to help condense any moisture “humidity” taken in during the process of compression.

C. The wet / dirty compressed air and condensed moisture then travel through a coalescing ﬁlter assembly. This ﬁlter allows the

condensed moisture to fall to the bottom of the ﬁlter bowl via gravity, where it will be automatically expelled via the ﬂoat

drain contained in the bottom of the ﬁlter bowl. The compressed air also travels through the coalescing ﬁlter element, which

removes 99.998% of all particles down to 0.01 microns. A ﬁlter change indicator located on the top of the ﬁlter housing

shows the condition of the element, and alerts the operator as to when the element is in need of replacement. GREEN

indicates the element has more useful life, while RED indicates the element is in need of replacement.

NOTE: The indicator only functions while compressed air is traveling through the ﬁlter with compressor running. The indicator

will ALWAYS read “GREEN” with compressors not running.

D. The compressed air then travels through the bottom of the desiccant “drying chamber”, where the remaining contained

moisture is reduced to a pressure dewpoint of -100°F, and then travels into the main storage tank for use in the dental

operatory.

E. When reaching its cut-off pressure of 100psi, the pressure switch will open and the compressor motors will stop.

NOTE: The time operated dryer purge valve DOES NOT open and purge when compressor stops, as it does on most competitive

brands. See Theory of Operation “While Not Running” for more information as to the proper operation of our purge valve.

SECTION II

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C1000 Series Service & Maintenance Manual

Theory of Oporation

Theory of Operation

THEORY OF OPERATION

While Not Running

A. When the motors stop after reaching the cut-out pressure of 100psi, the user will have clean / dry air ready for use in

the dental operatory. The compressor will remain in this “idle” state until the tank pressure drops to 80 psi, at which time

the compressor motors will turn on and return the running mode of operation.

B. The “Time Operated” dryer purge valve operates on a time basis instead of a “single cycle” basis used on most other

types of dental air compressors. Two timers, “located on the front of the valve assembly”, control how often and the

duration of each purge cycle.

SECTION II

NOTE: The compressor does not purge when the

compressor cycles off!

C. The “Left” timer knob on the purge valve, controls the

duration of the purge cycles. This timer is factory preset

and should not be adjusted. The factory setting is at the

maximum of 10 seconds.

D. The “Right” timer knob on the purge valve controls how

often the compressor purges moisture from the drying

chamber. The factory setting is 7 minutes, and should NOT

be adjusted.

E. A “TEST” button is located between the two timer knobs

to allow a technician to verify that the valve is operating

correctly.

By purging the drying chamber on a time basis, the DCI air

compressors ensure the drying chamber desiccant remains dry,

even during heavy usages, for consistent air quality.

Plumbing Schematic

Left

Motor Right

Motor

Check

Valve Check

Valve

Aftercooling

Tubing

Coalescing

Filter

Condensate

Drain

Drying Chamber

Flow/Check

Drying System

Pressure Gauge

Dryer Bypass

Ball Valve

Storage

Tank

Strainer

Shutoff

Valve

Time Purge

Valve

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C1000 Series Service & Maintenance Manual

Theory of Oporation

Theory of Operation

THEORY OF OPERATION

While Not Running

Electrical Schematic

SECTION II

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C1000 Series Service & Maintenance Manual

Maintenance

SECTION III

Unscrew the ﬁlter bowl by turning counter-clockwise. Lower the ﬁlter bowl to access the

ﬁlter element contained inside. The ﬁlter 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 ﬁlter 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 ﬁlter element should be checked with the compressor motors running. If

the indicator located on the top of the ﬁlter housing remains GREEN, the ﬁlter element has

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

To change the element, ﬁrst 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 conﬁrmed 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

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

Replace with DCI Part Number 2012 if needed. The ﬁlters are located on the rear of each

compressor cylinder.

MAINTENANCE

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