FL-24 Oil-Lubricated Piston Compressor — 1.3 kW, 24 L Receiver, 8 Bar
2.333,00 MDL
Purpose and Operating Principle
The FL-24 is a compact, oil-lubricated, direct-drive piston compressor made by MZB Compressor, designed for home and small-workshop use: garage, house, small woodworking or repair shop. It runs on a standard single-phase 220V outlet, with no need for special wiring.
1. Operating principle — the classic single-stage, direct-drive piston scheme:
- The electric motor directly rotates the compressor pump’s crankshaft (no belt drive), the piston moves inside the cylinder, drawing in and compressing atmospheric air.
- Compressed air is fed through a check valve into the 24-liter receiver, where a supply builds up at working pressure.
- The pressure switch automatically shuts off the motor once the upper threshold is reached and restarts it when pressure drops below the lower threshold — the cycle repeats without operator involvement.
- The pressure regulator mounted at the outlet, with its own gauge, lets you reduce and precisely set the working pressure for the connected tool, independent of the pressure in the receiver itself.
- Oil lubrication of the piston assembly reduces friction between the piston and cylinder walls, extending motor life compared to oil-free models in the same class.
2. Technical Specifications
| Parameter | Value |
|---|---|
| Model | FL-24 |
| Manufacturer | MZB Compressor |
| Type | Piston, oil-lubricated, direct drive |
| Motor power | 1.3 kW |
| Supply voltage | 220V (single-phase) |
| Receiver volume | 24 L |
| Working pressure | 8 bar |
| Output flow rate | 100 L/min |
| Output connector | 1/4″ |
| Dimensions (L×W×H) | 570 × 270 × 560 mm |
| Weight | 22–25 kg |
| Mobility | Wheeled |
| Gauges | 2 pressure gauges (receiver pressure + output pressure) and a pressure regulator |
| Protection | Built-in thermal relay against motor overheating |
| Minimum operating temperature | +5°C |
3. Design Features
Decoding the designation FL-24:
| Element | Meaning |
|---|---|
| FL | MZB Compressor’s line of small direct-drive piston compressors |
| 24 | Receiver volume — 24 liters |
Key design solutions:
- Belt-free direct drive — fewer moving parts than a belt-driven setup, lower risk of belt slippage or failure, a more compact pump layout relative to the motor.
- Oil lubrication of the piston assembly — reduces friction during operation, extending motor life compared to oil-free compressors in the same class; the trade-off is the need for regular oil changes (see Section 4).
- Two gauges and an output pressure regulator — separate monitoring of receiver pressure and the pressure actually delivered to the tool allows precise tuning to each pneumatic tool’s requirements without having to reset the adjustment when switching tasks.
- Compact dimensions and wheels — at 22–25 kg, the compressor can be moved by one person between the garage, yard, and different floors.
- Built-in thermal protection — shuts off the motor on overheating, reducing the risk of winding damage during prolonged intensive use.
4. Installation Recommendations
- Place the compressor on a flat, solid surface — tilt or an uneven base increases vibration and can affect piston assembly lubrication during operation.
- Change the oil for the first time after 50 hours of break-in, then every 200–300 operating hours or at least once a year; the oil lubrication system only delivers the stated motor life if this interval is followed.
- Don’t operate the compressor below +5°C — in cold conditions the oil thickens, making startup harder and increasing wear during a cold start; store the compressor in a heated space during winter.
- Set the pressure regulator for the specific tool before starting work — the working pressure at the outlet doesn’t have to match the receiver’s cutoff pressure (8 bar); a spray gun or pneumatic stapler typically needs a lower pressure, as specified in the tool’s datasheet.
- Drain condensate from the receiver periodically via the drain valve at the bottom — this extends the receiver’s service life and reduces the risk of moisture reaching the tool.
- Connect only to a working, grounded 220V outlet — no special wiring is required, but the outlet must support a 1.3 kW load.
5. Analogues and Comparison
FL-24 vs FL-40 (same MZB lineup, next size up):
| Criterion | FL-24 | FL-40 |
|---|---|---|
| Receiver volume | 24 L | 40 L |
| Motor power | 1.3 kW | 1.5 kW |
| Output flow rate | 100 L/min | 110 L/min |
| Dimensions (L×W×H) | 570×270×560 mm | 680×300×700 mm |
| Recommended for | Compact garage/home solution, occasional tasks | Longer duty cycles, a bit more air reserve without frequent start cycles |
Functional equivalents in this equipment class (compact home direct-drive piston compressors, 20–30 L, 1–1.5 kW): Fubag, Kraftmann, Werk, Ergomax, Denzel, Patriot, and other brands offering compressors of similar class built on comparable factory platforms. Before comparing, check the actual rated specs (flow, pressure, receiver volume) — models in the same power class from different brands can differ noticeably in practice.
6. Common Operating Mistakes
- Using the compressor in an unheated garage in winter without pre-warming — below +5°C, thickened oil makes startup harder and accelerates piston assembly wear during a cold start.
- Skipping the first oil change after break-in (50 hours) — metal particles from the break-in period left in the oil accelerate motor wear if the oil isn’t changed on time.
- Trying to connect a tool with airflow demand higher than the compressor’s output (for example, an impact wrench or grinder that needs sustained high flow) — the compressor can’t keep up with pressure recovery, and the tool runs intermittently or loses power.
- Operating without adjusting the pressure regulator for the tool — feeding the full receiver pressure (8 bar) directly to a tool rated for lower pressure can damage the tool or degrade work quality (especially critical for spray guns).
- Ignoring condensate drainage from the receiver — moisture buildup inside the receiver promotes corrosion over time and can reach the tool along with the air.
7. Application Areas
The FL-24 covers a wide range of home and small-workshop tasks:
- Garage work — inflating tires (from bicycles to SUVs), blowing out vehicle systems, cleaning parts of dust and dirt
- Home repair and construction — a pneumatic stapler for upholstering furniture, a nailer for installing paneling or baseboards
- Painting work — applying paints, varnishes, and protective coatings to fences, metal structures, or wood furniture with a spray gun
- Workshops — airbrushing, minor bodywork repairs, cleaning tools after use
For painting an entire car or for tools requiring sustained high airflow (impact wrench, grinder), a higher-output model is recommended — for example, the FL-40.
8. Expert Opinion
Vitali Boluchevski, Lead Engineer, Acvatron SRL, 18 years of experience:
“The FL-24 is a typical ‘one-outlet compressor’: no special wiring, no three-phase hookup — just plug it in and go. From servicing these compressors in Moldova: most warranty calls aren’t about the pump itself failing, but about two things — skipping the first oil change after break-in, and trying to start a compressor in winter after it sat overnight in an unheated garage at below-freezing temperatures. The oil lubrication system is an advantage for motor life, but it also demands maintenance discipline, unlike oil-free models. One thing I always point out: the two gauges aren’t just for show — the output pressure regulator should always be set for the specific tool, not just left open at full receiver pressure.”
9. FAQ
Is the FL-24 suitable for connecting to a standard 220V outlet? Yes, the FL-24 runs on a standard 220V household supply. No special wiring or three-phase connection is required.
Can the FL-24 be used to paint a car? The FL-24 is suitable for painting small surfaces (fences, furniture, metal structures) with a spray gun, as well as for airbrushing and minor bodywork repairs. For painting an entire car, a higher-output model is recommended.
How often does the oil need to be changed in the FL-24? The first oil change is recommended after 50 hours of break-in, with subsequent changes every 200–300 operating hours or once a year. The oil lubrication system only delivers long motor life if this schedule is followed.
What pneumatic tools can be connected to the FL-24? The FL-24 can power a spray gun, pneumatic stapler, nailer, blow gun, and airbrush. For an impact wrench or grinder, which need sustained high airflow, a higher-output model is recommended.
Can the FL-24 be operated outdoors or in an unheated garage? The compressor should be used at a temperature no lower than +5°C. In cold conditions, the oil thickens, making startup harder and increasing wear. During cold weather, store the compressor in a heated space.
