Gardner Denver AirSmart VS80-110B Operating And Service Manual page 83

SYMPTOM
Excessive oil 1.
consumption
2.
3.
High discharge 1.
air, oil
Temperature
(air, water
cooled cores)
2.
3.
4.
5.
High discharge 1.
air, oil
Temperature
(air cooled
cores)
2.
High discharge
1.
air, oil
Temperature
(water cooled
cores)
2.
VFD Shutdown 1.
on Overheat
2.
POSSIBLE CAUSE
Oil separation malfunction
Oil leaks at fittings and gaskets
Shaft seal leaking
Oil mixing valve stuck on bypass
mode
Clogged oil filter
Clogged cooler (interior)
Clogged oil lines
Low oil level
Dirty or clogged cooler outer
surfaces.
Insufficient cooling air flow
Optional water temp regulating or
shut-off valve malfunction
Insufficient cooling water flow
Ambient temperature exceeds
45C
VFD air filters dirty
13-18-612
REMEDY
See "Oil Carryover" in this section.
1.
2. Detect and correct oil leaks.
3.
Inspect or replace shaft seal.
1. Check 24Vdc power feed to servo.
Check ModBus connection to servo.
Check servo-to-valve coupling.
Check rotation of ball valve.
2. Inspect and replace filter.
3. Inspect and clear cooler.
4. Inspect and clear oil lines.
5. Add oil to proper level.
1. Inspect and clean cooler outer
surfaces.
2. Verify (ductwork) back pressure does
not exceed .1" water gauge.
Refer to Section 6, Page 56 "Heat
1.
Exchangers" for details.
2 See Section 6, Page 56 for details on
adequate cooling water flow rates.
1. Check location ventilation and
improve if necessary.
2. Inspect, clean or replace elements.
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