PROBLEM/POSSIBLE CAUSE

 

CHECKS AND REMEDY

4. Inlet gas temperature is above the dryer’s

4.

Check the compressor aftercooler and cooling system. Adjust

 

design inlet temperature specified on the

 

as necessary to bring the dryer inlet temperature to design

 

Dryer Specification Label located on the in-

 

specification.

 

side cover of the dryer system control enclo-

 

 

 

sure.

 

 

5.

Liquids entering the dryer inlet.

5.

Isolate and depressurize Prefilter Assembly. Inspect prefilter

 

 

 

cartridges and end seals for loosening and/or damage. Tighten

 

 

 

or replace as necessary.

 

 

 

CAUTION: Each component of an Deltech Air Purification Sys-

 

 

 

tem has been selected to compliment the performance of the

 

 

 

other components of the system. Therefore, use of unautho-

 

 

 

rized parts or supplies or improper operation will degrade system

 

 

 

performance.

 

 

5a.

Check the compressor aftercooler for tube leakage if the

 

 

 

aftercooler uses water as the cooling medium.

 

 

5b.

Inspect the prefilter automatic drain valve or drain trap. Ensure

 

 

 

that it is not clogged, and is draining properly. Repair or replace

 

 

 

as necessary, if a problem is noted.

6. Desiccant is badly broken or coated with oil.

6.

Shutdown and Depressurize Dryer. Inspect desiccant

 

The “normally white” desiccant will appear

 

through fill ports and replace if badly broken, coated with oil or

 

tan or brown if oil contamination has oc-

 

otherwise fouled. Inspect prefilter if fouling is noted.

 

curred.

 

 

7. Union or other piping/component leaks at

7.

Soap test the dryer outlet manifold and piping downstream of

 

dryer outlet manifold or downstream of dryer

 

dryer. Repair ALL leaks noted.

 

outlet.

 

 

 

 

 

Moisture Indicator has changed color from

 

 

BLUE (dry) to a PINK (wet) indication.

 

 

1.

Moisture indicator’s bleed valve is closed.

1.

Open bleed valve installed in moisture indicator body until a

 

 

 

slight continuous gas bleed is felt exhausting from bleed

 

 

 

valve’s drilled exhaust port. Granular indicating desiccant

 

 

 

MUST remain motionless after final adjustment.

2.

Moisture indicator supply valve is closed.

2.

Fully open the moisture indicator supply valve. Adjust indicator’s

 

 

 

bleed valve as instructed in previous step 1.

3. Moisture indicator is internally clogged, pre-

3.

Refer to Moisture Indicator Recharging Procedure section of this

 

venting gas from exiting through indicator’s

 

manual for disassembly instructions. Clean or replace compo-

 

bleed valve.

 

nents as necessary.

4. Sample tubing to Moisture Indicator is leak-

4.

Perform a soap bubble leak test on indicator’s tubing and fit-

 

ing permitting “wet” atmospheric air to enter

 

tings. Tighten or repair all noted points-of-leakage.

 

tubing and contaminate dry gas sample.

 

 

5. If the previous items 1 through 4 have been

5.

Refer to “dew point degradation” section of this Troubleshooting

 

checked, and the Moisture Indicator fails to

 

Guide. Determine and eliminate fault.

 

return to blue within 3 to 5 hours, an actual

 

Important: If granular indicating desiccant is discolored (any

 

dew point problem may exist.

 

 

 

color other than Light Pink to Dark Blue, replace the granular

 

 

 

 

 

 

indicator.

 

 

 

 

5 - 2 Troubleshooting Guide

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Deltech Fitness LS2580, LS60 instruction manual Shutdown and Depressurize Dryer. Inspect desiccant

LS60, LS2580 specifications

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