background image

6

FIELD SERVICE GUIDE

PROBLEM

SYMPTOM

POSSIBLE CAUSE

REMEDY

Water downstream of 

dryer.

No discharge from no loss drain 

valves.

Drain valve failure or accumulation 

of dirt in drain valve strainer.

Dismantle drain valve: clean, repair or replace.

See maintenance section.

Inlet air temperature is too high.

Aftercooler malfunction.

Check aftercooler discharge temperature.

Reduce temperature to 122°F (50°C) max.; reduce 

airflow if temperature is above 95°F (35°C).

Liquid water entering dryer.

Aftercooler drain valve malfunction.

Dismantle aftercooler drain valve; clean, repair or 

replace.

Excessive airflow (may also cause 

high pressure drop).

Dryer improperly sized.

Check airflow and dryer capacity (See Engineering 

Data Tables).

Reduce airflow or resize and replace dryer.

Compressor cuts out on internal 

overload.

Inadequate ventilation of refriger-

ant compressor.

Ensure adequate ventilation of the condensing unit 

(see Clearance).

Motor will restart automatically when compressor 

is cool.

Leak in refrigeration system.

Locate leak, repair and recharge. Motor will restart 

automatically when compressor is cool.

Compressor windings read open or 

shorted.

Compressor burned out.

Have a refrigeration mechanic check and replace.

The dew point level is red on LCD 

window.

Inlet air temperature too high.

Reduce aftercooler discharge temperature to design 

conditions (See Engineering Data Tables).

Excessive airflow.

Check airflow and system capacity. Reduce airflow or 

resize and replace system.

Condenser fouled or clogged.

Clean or replace condenser.

Fan motor inoperative.

Replace fan motor.

High ambient temperature.

Ventilate area.

See Engineering Data Tables.

High pressure drop 

across dryer.

Inlet air temperature is too low.

Low ambient temperature.

Consult your local distributor.

Excessive airflow (may also cause 

water downstream of dryer). 

Dryer improperly sized.

Check airflow and dryer capacity. Reduce airflow or 

resize and replace dryer.

Dryer icing up.

Adjust operating conditions to meet sizing condi-

tions.

No condensate from 

no loss drain valve.

Valve venting. But no condensate 

from valve.

Accumulation of dirt in valve 

strainer.

Dismantle valve strainer.

Clean or replace Strainer.

Valve continuously venting.

Clogged valve orifice.

Replace valve.

Short in electrical component.

Check and replace connector or controller assembly.

Valve not cycling.

No electrical power.

Check and correct power supply and connections.

Drain valve malfunction.

Replace drain valve.

No response when test button is 

pushed.

No electrical power.

Check and correct power supply and connections.

Fuse burned out.

Check solenoid coil and wiring cable and replace 

fuse.

MCGUIRE AIR COMPRESSORS INC

1-888-229-9999

MCGUIRE AIR COMPRESSORS INC

1-888-229-9999

Summary of Contents for SPXFLOW FLEX DFX 12.5

Page 1: ...FX 12 5 DFX 15 1 DFX 20 1 FOR M NO 7473076 R EVI S ION 08 2019 R EAD AN D U N D E R STAN D TH I S MAN UAL PR IOR TO OPE RATI NG OR S E RVICI NG TH I S PROD UCT I N STR UCTION MAN UAL MCGUIRE AIR COMPR...

Page 2: ...7 DRAWINGS General Arrangement Model DFX 8 1 8 Models DFX 12 5 DFX 15 1 9 Model DFX 20 1 10 Electrical Schematic 11 Air and Refrigerant Flow Schematic Model DFX 8 1 12 Models DFX 12 5 DFX 15 1 DFX 20...

Page 3: ...ity have the potential to cause personal injury or equipment damage Before doing any work on the dryer be sure the electrical supply has been locked and tagged and the internal pressure of the dryer h...

Page 4: ...ittings must be rated for the maximum operating pressure given on the dryer data plate and must be in accor dance with applicable codes Support all piping do not allow the weight of any piping to stre...

Page 5: ...ated by incoming warm air as it passes back through the air to air heat exchanger Using the outgo ing air to pre cool the inlet air condenses up to 65 percent of the moisture out of the inlet air befo...

Page 6: ...omponent of the compressed air system under pressure may cause equipment failure and serious personal injury Operation 1 To start the dryer turn on the a dryer on off switch 2 When the refrigeration c...

Page 7: ...HA approved air nozzle that limits its discharge pressure to 30 psig 2 1 kgf cm2 Yearly Maintenance It is recommended to replace the drain service unit annually For units purchased with a filtration p...

Page 8: ...let air temperature too high Reduce aftercooler discharge temperature to design conditions See Engineering Data Tables Excessive airflow Check airflow and system capacity Reduce airflow or resize and...

Page 9: ...Setting cut in cut out 217 5 275 6 psig 15 19 barg Electrical Data Nominal Voltage 460 3 60 Input Power Rated Flow watts 4 300 7 600 9 000 10 000 Minimum Circuit Ampacity 9 8 16 5 16 9 20 4 Maximum Ov...

Page 10: ...92 760 31 50 800 58 59 1488 3 94 100 54 02 1372 50 08 1272 3 ANSI Flange 1133 514 HOLE FOR MAIN POWER DRAIN OUTLET 4 10 MOUNTING HOLES FOOT PRINT H G C F A B E J VENT DRAIN VALVE D WETTED AIR INLET D...

Page 11: ...1350 4 ANSI Flange 1537 697 DFX 15 1 10 85 276 19 69 500 6 09 155 37 80 960 39 37 1000 58 59 1488 3 94 100 57 09 1450 53 15 1350 4 ANSI Flange 1766 801 HOLE FOR MAIN POWER DRAIN OUTLET 4 10 MOUNTING H...

Page 12: ...09 155 37 80 960 39 37 1000 58 59 1488 3 94 100 63 78 1620 59 84 1520 4 ANSI Flange 2028 920 HOLE FOR MAIN POWER DRAIN OUTLET 4 10 MOUNTING HOLES FOOT PRINT H G A B F E C J D VENT DRAIN VALVE TOPVIEW...

Page 13: ...SW 2 3 4 T R S MC1 COMP 0V 480V 0V 120V 460V 3PH 60HZ W1 U1 V1 E 2 1 MAIN POWER TH1 AC IN COMP ALARM DRAIN COM ON R1 S1 FG S2 R2 COM ON COM N C N 0 TS3 TS2 DRAIN TRAP 24 21 12 25 20 30 TS1 DRAIN TRAP...

Page 14: ...VE DRAIN OUTLET NO LOSS VALVE EXPANSION DEVICE TEMP SENSOR2 TS2 SEPARATOR FILTER TEMP SENSOR3 TS3 MANUAL REFRIGERANT COMPRESSOR CONDENSER COOLING AIR FLOW AIR COOLED FILTER CONDENSER AIR COOLED HIGH P...

Page 15: ...OOLED TEMP SENSOR2 TS2 TEMP SENSOR3 TS3 FILTER CONDENSER AIR COOLED HEAT EXCHANGER AIR AIR REF PCM AIR REHEATER CHILLER BRAZED PLATE HEAT EXCHANGER BRAZED PLATE DRAINVALVE DRAIN OUTLET NO LOSS VALVE S...

Page 16: ...06 Separator 7473007 7473008 7473008 7473009 White Temperature Sensor 7440388 7440388 7440388 7440388 Red Temperature Sensor 7440389 7440389 7440389 7440389 Yellow Temperature Sensor 7440390 7440390 7...

Page 17: ...15 NOTES MCGUIRE AIR COMPRESSORS INC 1 888 229 9999 MCGUIRE AIR COMPRESSORS INC 1 888 229 9999...

Page 18: ...MCGUIRE AIR COMPRESSORS INC 1 888 229 9999 MCGUIRE AIR COMPRESSORS INC 1 888 229 9999...

Page 19: ...manufacturer s product The maximum damages liability of the manufacturer is the original purchase price of the product or part THE FOREGOING WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES W...

Page 20: ...vements and research are continuous at SPX FLOW Inc Specifications may change without notice ISSUED 08 2019 Form No 7473076 Revision None COPYRIGHT 2019 SPX FLOW Inc FLEX Series Refrigerated Type Comp...

Reviews: