Great Lakes Air Products EDR-A1 series Kullanım Kılavuzu - Sayfa 6

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TROUBLESHOOTING

Sec Symptom

Water downstream of

dryer.

Drain system failure

with no condensate

discharge on test

initiation or continuous

air discharge.

High pressure drop

across dryer

E1 Power on indicator

does not illuminate

E2 Refrigeration

compressor cycles on

and off

Possible Cause(s)

1. Residual free moisture

remaining in downstream

piping

Air By-pass system is open

3. Ambient temperature

surrounding downstream

piping is below the dryer's

dew point.

4. Free water (liquid) is entering

the dryer

5. Condensate is not being

drained

6. Dryer is overloaded resulting

in high dew point

7. Refrigeration system is not

functioning.

8. Suction pressure not in

operating range

9. Precooler Fan not functioning

or cooler is clogged

1. Drain strainer is clogged

2. Solenoid valve or electronic

timer failure

3. Solenoid valve diaphragm

rupture or orifice path blocked

open

4. Precooler float drain failure

1. Inlet flow exceeds

maximum capacity

2. Freezing of moisture in

evaporator is restricting inlet

air flow

Refrigeration System Fault

1. Power failure, Line fuses

blown, or disconnect open.

2. Power switch failure

1. Ambient Conditions are

above or below minimum or

maximum ranges.

1. Condenser fan failure

3. Compressor thermal

overload failure

3. Air-Cooled Units,

Dirty condenser

4. Water-Cooled Units,

High fluid temperature or low

fluid flow.

Page 6

Corrective Action

Drain low spots in system and purge with

dry air

Verify valve positions and correct valve

positions

Insulate and/or heat trace piping exposed

to low ambient temperatures or dry air to a

lower dew point.

Dryers are designed to handle saturated

air not condensed liquid. Install a separator

and coalescing filter upstream of dryer.

See section B

See capacity charts to determine correct

load

See section E

Contact your local distributor to perform

adjustments.

Clean cooler coils and/or replace fan motor

Depressurize dryer and replace or clean

drain strainer.

Replace drain solenoid and or timer

assembly

Clean or replace internal diaphragm

assembly. Clean or replace auto float

drain.

Replace float drain.

Check inlet flow vs. rated capacity

If refrigerant suction pressure is out of

standard operating range, contact your

local distributor to perform adjustments.

Have an electrician check electrical feed

and connection integrity.

Replace switch

Verify range and rectify ambient

conditions.

Replace condenser fan

Replace thermal overload and

investigate cause of failure.

Clean condenser as per required

maintenance.

Check fluid temperature, bring in range

and check for free fluid flow through

condenser. If problem persists contact

your local distributor to perform

adjustments.