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13-11-608 Page 60
SYMPTOM
POSSIBLE CAUSE
REMEDY
Compressor is low on delivery
and pressure
1. Restricted air filter.
1. Clean or replace filter.
2. Sticking inlet valve.
2. Inspect and clean inlet
valve.
3. Unload pressure adjusted too
low.
3. Adjust the unload pressure.
See Section 4.
4. Discharge check valve
stuck closed.
4. Disassemble and clean
valve.
5. Subtractive valve is active.
5. Adjust subtractive valve to
start operating at 1 psi
above the desired full load
operating pressure. Clean
or replace if output is not
linear - 2.3 psi output per 1
psi input.
High discharge air temperature
1. Dirty or clogged cooler face.
1. Clean cooler.
2. Insufficient cooling air flow.
2. Provide unrestricted supply
of cooling air.
3. Clogged water injection filter
or cooler (interior).
3. Replace filter or clean
cooler.
4. Insufficient water cooling
flow.
4. Cooling water must meet
minimum flow, pressure and
temperature requirements.
5. Reservoir water level low.
5. See “Reservoir water level
low”, Troubleshooting
details
Reservoir water level low
1. Drain valve leaking.
1. Inspect and clean or
replace.
2. RO producing none to low
water.
2. See RO Troubleshooting
details.
3. Condensate return strainer
and/or orifice plugged.
3. Inspect and clean.
Abnormal water volume found
in package discharge air
1.
Condensate return strainer
and/or orifice plugged.
1.
Inspect and clean.
NOTICE
Gardner Denver factory remanufactured replacement compressor airend units
are available from your authorized distributor, on an exchange basis, for all
rotary screw compressor units.
Summary of Contents for PUREAIR EWD99E
Page 7: ...13 11 608 Page 2 Figure 1 2 PACKAGE ILLUSTRATION AIR COOLED 302EWD797 A Ref Drawing...
Page 8: ...13 11 608 Page 3 Figure 1 3 PACKAGE ILLUSTRATION WATER COOLED 303EWD797 A Ref Drawing...
Page 9: ...13 11 608 Page 4 Figure 1 4 WATER COOLED SCHEMATIC 300EWD797 D Ref Drawing...
Page 10: ...13 11 608 Page 5 Figure 1 5 AIR COOLED SCHEMATIC 301EWD797 D Ref Drawing...
Page 30: ...13 11 608 Page 25 Figure 4 2 FLOW CHART FOR SETUP PROGRAMMING 300EWC1255 Ref Drawing...
Page 44: ...13 11 608 Page 39 301EWD546 B Ref Drawing Page 2 of 2...
Page 46: ...13 11 608 Page 41 302EWD546 B Ref Drawing Page 2 of 2...
Page 48: ...13 11 608 Page 43 303EWD546 B Ref Drawing Page 2 of 2...