AIRTAK SD150 Betriebsanleitung - Seite 6

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PROBLEM

POSSIBLE CAUSE

Water in

1. Inlet and outlet connections are

system.

reversed.

2. Drain trap is clogged or inoperative.

3. Bypass system is open

4. Free moisture remains in pipe lines

5. Excessive air flow

6. Excessive free moisture

7. High temperature inlet air

8. Clogged condenser fins

TROUBLESHOOTING GUIDE

REPAIR

Check inlet and outlet connections. This

dryer is designed for air flow in one

direction only. Inlet and outlets are

identified.

Restore a free flow of water. Trap is a

float type. The bowl will normally contain

some water and valves should be free

and clean. Trap should be periodically

checked and cleaned. After initial

installation, the trap should be checked

weekly for dirt, pipe scale, etc. for the 60

days.

Check the valves. Bypass piping should

be installed around the dryer so the dryer

may be isolated for service without

shutting down the air supply. During

dryer operation valves must be set so all

air goes through the dryer.

Blow out the system. Before dryer is first

started all few moisture should be blown

out of the system.

Check actual (scfm) flow through the

dryer. This dryer is designed for a

specified air flow. If air flow into the dryer

exceeds specifications, water removal

capacity may not be sufficient, resulting

in liquid carry-over downstream. Check

the flow of air system.

Check the separator and drip legs ahead

of the dryer. If this dryer is installed at an

individual work station or in one portion

only of the piping system, instead of near

the compressor, there may be an

accumulation of free moisture in the

pipeline ahead of the dryer. If the

moisture is pumped into the dryer

intermittently, water removal capacity

may not be sufficient. A separator or air

line filter with an automatic trap should

be installed ahead of the dryer.

Rated operating temperature is 100°F.

The dryer is designed for inlet air

temperature of 100°F. Temperatures

above 100°F may cause water down

stream and an overloading of the

condensing unit. Increase dryer size or

install an aftercooler.

Clear fins of all obstructions. Clogged

fins in the condenser coil will re4strict air

passage and reduce refrigeration

capacity, causing water down stream.

Fins should be periodically checked and

cleaned. Install ambient air filter.