Gardner Denver VS / VST VSD Rotary Screw
25–300 hp variable-speed oil-flooded screw. Direct-drive, VFD control, air- or water-cooled.
Type
Oil-flooded rotary screw
Power
25–300 hp
Flow
100–1,400 cfm
Pressure
100–190 psig
Cooling
air-or-water
Drive
vfd-direct
Lubrication
oil-flooded
Models
VS 25–250, VST 30–300
Years produced
VS/VST current generation ~2015 – present.
Sound level
~68–78 dB(A) @ 1 m.
Ambient range
40–115 °F.
Motor efficiency
IE3 / NEMA Premium; PM motor variants approach IE5.
Warranty
5-year airend option; iConn adds condition monitoring.
Control modes
- VSD variable speed
- Cascade with fixed-speed units
Typical applications
- Load-variable manufacturing
- Base+trim installations
Specs & intervals below are from publicly published OEM literature and long-standing field practice. Torque values, exact revision-dated part numbers, and safety-critical settings vary by serial number — always cross-check the unit’s OEM manual and nameplate before ordering parts or performing service.
Fluid
Spec: AEON 9000 SP or AEON PD (PAO) per model chart
Change interval: 8,000 hr
Approved alternatives
- AEON 4000 (semi-synthetic short-interval)
Wear parts
| Category | Interval | Source |
|---|---|---|
| Air filter | 2,000 hr or ΔP | |
| Oil filter | 2,000 hr | |
| Separator element | 4,000 hr | |
| Cooler cleaning | Quarterly in dusty environments | |
| VFD cabinet filter | Quarterly clean |
Consumable part numbers change by revision and region — pull the current number from the OEM portal.
Parts cross-reference
OEM part numbers with commonly-cited aftermarket equivalents. Verify against the nameplate and OEM parts portal before ordering — dimensionally similar filters can still be wrong for the application.
Air filter
Intake filter
OEM
2116873
Aftermarket
- P822858— Donaldson
- PA2848— Baldwin
- SA 16430— Hifi
VerifiedConfirmed against a public OEM or aftermarket catalog / cross-reference tool at time of entry.LikelyCommonly cited in the vendor's cross tool or long-standing field usage; not independently re-verified against the current OEM parts list.UnverifiedDimensional lookalike or user-reported.
Oil / fluid filter
Oil filter (spin-on)
OEM
2010474
Aftermarket
- P171754— Donaldson
- B7600— Baldwin
- LF3379— Fleetguard
VerifiedConfirmed against a public OEM or aftermarket catalog / cross-reference tool at time of entry.LikelyCommonly cited in the vendor's cross tool or long-standing field usage; not independently re-verified against the current OEM parts list.UnverifiedDimensional lookalike or user-reported.
Air-oil separator
Air-oil separator
OEM
2116020
Aftermarket
- P532473— Donaldson
- OS 5223— Hifi
VerifiedConfirmed against a public OEM or aftermarket catalog / cross-reference tool at time of entry.LikelyCommonly cited in the vendor's cross tool or long-standing field usage; not independently re-verified against the current OEM parts list.UnverifiedDimensional lookalike or user-reported.
Lubricant
AEON 9000SP (PAO)
OEM
28H97 (5 gal)
Aftermarket
- Rarus SHC 1025— Mobil
- Cetus PAO 46— Chevron
VerifiedConfirmed against a public OEM or aftermarket catalog / cross-reference tool at time of entry.LikelyCommonly cited in the vendor's cross tool or long-standing field usage; not independently re-verified against the current OEM parts list.UnverifiedDimensional lookalike or user-reported.
- Rarus SHC 1025— MobilUnverified
- Cetus PAO 46— ChevronUnverified
Need to look up a number across all models? Use the parts cross-reference search.
Preventive maintenance
Daily
- Check fluid level in sight glass at running temp
- Listen for unusual noise / vibration
- Check discharge pressure & temperature vs baseline
- Verify condensate drain function
- Log package amps if metered
Weekly
- Blow down receiver and drain traps
- Check for oil carryover at first drop leg
- Inspect for fluid or air leaks around airend and separator tank
- Verify safety valve is not weeping
Every 2,000 hr / 6 mo
- Change fluid filter
- Change air filter (or sooner per ΔP)
- Sample fluid for TAN / metals / water
- Clean cooler exterior with low-pressure air (never > 30 psi against fins)
Every 4,000 hr / 12 mo
- Change separator element
- Change fluid
- Inspect scavenge line & orifice for coking
- Check coupling / belt alignment & wear
- Torque electrical lugs to spec (typ. 45–75 in-lb #4–2/0 AWG)
Every 8,000 hr
- Rebuild inlet valve
- Rebuild minimum-pressure check valve
- Regrease or replace motor bearings per OEM interval
- Verify safety valve setpoint against gauge
Common faults & first checks
- A05 airend temp high
- VFD ambient overtemp on hot days — clean drive cabinet filter
- iConn connectivity loss — check Ethernet & DNS
Known issues & field notes
- VFD DC bus caps age at ~7–10 years — plan preventive replacement
- AEON 9000 hygroscopic — sealed drum only
Controller(s)
- GD Pilot TS / AirSmart — GD Pilot TS: 5.7" TFT color touch; AirSmart: 4-line VFD monochrome (older).
Strengths
- Wide VFD turndown
- Pilot TS HMI touchscreen
- iConn cloud built-in
Weaknesses
- AEON coolants brand-specific
Field notes
GD is under the Ingersoll Rand umbrella since 2020. Newer VS/VST use Pilot TS; older units may run AirSmart.