Force Four

He goes the extra mile
To give you the best.

The FORCE FOUR model meets professional needs that require large charging capacities in hot, poorly ventilated environments or tropical countries. It is equipped with an intuitive control panel and electric motor. The pumping unit, a choice of 3 most powerful, is exposed to ensure a better cooling cycle. It is equipped with the Hyperfilter purification system mounted on a stand-alone system, with automatic condensate drainage. For longer filter life, the Tornado high pressure dryer is recommended. Available as options: the Presec system for filter saturation control, Megafilter oversized filter cartridges, and 2- or 4-outlet remote refill panel.

4-stage high pressure pumping unit.

  • Monobloc in aluminum,
  • Crankshaft in forged steel
  • Forced lubrication on the 4th stage cylinder by gear pump
  • Oil filtration
  • Aluminum connecting rods
  • Main roller bearings
  • Roller connecting rod bearings
  • 1st, 2nd and 3rd stage cylinders in special cast iron
  • 4th stage cylinder in special treated steel.
  • Low oil pressure switch.
  • Stainless steel intake and exhaust valves
  • Interstage cooling pipes in stainless steel
  • Separator after the 2nd, 3rd and 4th stage
  • Safety valves after each stage
  • Oil level sensor
  • Prepared for Hyperfilter filter system

Electric motor

One of the fundamental parts of the compressor: the motor transfers the motion to the pumping unit through the belt. Single-phase 7.5 kW or three-phase 7.5 to 11 kW electric motor is available on this model.

Purification at the highest level.

Placed after the last compressor separator and before the pressure holding valve, the Hyperfilter purification system enables reliable treatment of the breathing air according to DIN EN 12021¹ when using original filter cartridges. The separator present between the 2nd and 3rd stage of the purification circuit allows to extract the greatest possible humidity. The filtering capacity with inlet air at 20 ° C and 200 bar is 4300 m³.

Compressor control and automatic condensate drainage system

  • Motor protection switch.
  • Fixed calibration pressure switch 232 or 300 bar.
  • Autostart with pressure differential 15 bar. (optional)
  • Transformer.
  • Drainage of all separators between individual stages and also of the final separator during compressor operation (standard drainage interval every 15 minutes for a period of 6 seconds).
  • Timer for automatic condensate drain.
  • Interstage pressure gauges display the working pressure for the individual compression stages. This pressure information allows you to check the tightness of the valves (inlet and outlet) of each stage and to quickly identify potential sources of failure.

Interstage pressure gauges are mounted in the compressor frame.

Simplicity comes standard.

Imagine having a compressor capable of great performance and endowed with extraordinary solidity. What would all this be without absolute simplicity in managing it?
We believe that innovation is for this: to make everything simpler.

The highest air quality is the goal of a Coltri compressor.

Air purity and quality are two essential characteristics of our compressors. The air you breathe from Coltri compressors complies with the EN 12021: 2014 standards: this is why you can work, have fun and exercise with them in absolute safety.

Standard equipment

4 Filling connections of your choice of DIN 232, DIN 300 or INT/YOKE 232 bar
4 filling hoses of 1.2 m in length
Pressure maintenance valve
Interstage control gauges
Double PED certified Hyperfilter filter system
Purification system on “stand-alone” structure
Automatic condensate drain
Oil level control with automatic shutdown
Oil pump
Frame color Black RAL 9005

Technical data

Type of gas

Breathing air (EN 12021) – Nitrox 40% max O2 – Helium – Nitrogen

Intake pressure

Atmospheric max 300 millibars

Nominal pressure

250 bar / 330 bar / 360 bar

Working pressure

250 bar / 330 bar / 360 bar

Max working pressure

420 bar

Permissible ambient temperature range

-10° C ÷ +40° C

Permissible altitude

0 ÷ 1.500 m SLM

Max permissible tilt

15°

Design

Cabinet aperto

Operating voltage, standard

230 V, 60 Hz (elettrico monofase) 400 V, 50 Hz (elettrico trifase)

Other operating voltage

On three-phase electric motor at 60Hz the power (kW / Hp) increases by 20%.

230 V, 50 Hz / 440 V, 60 Hz / 400 V, 60 Hz

Oil

Synthetic Coltri Oil ST 755

Oil change interval

Every year / 1,000 h

Frame

Steel thickness 1.5 mm – Color RAL Black 9005 – Powder coating – scratch-resistant

Compressor

Charging rate

Measured during 10 liters cylinder filling from 0-200 bar tolerance +/- 5% at + 20° C ambient temperature.
400 EM

400 l/min

24 m3/h

14.1 CFM

450 ET

450 l/min

27 m3/h

15.9 CFM

650 ET

650 l/min

39 m3/h

23 CFM

Purification system

2 Hyperfilter su struttura stand-alone

Cooling air flow, min.

400 EM

4.050 m3/h

450 ET

4.050 m3/h

650 ET

4.820 m3/h

Weight

Standard model. Weight and dimensions may vary depending on accessories.
400 EM

250 kg

551 lb

450 ET

250 kg

551 lb

650 ET

260 kg

573 lb

Dimensions

(W x D x H)

115 x 60 x 79,6 cm

45.3 x 23.6 x 31.3 in

Motor

Power

400 EM

7.5 kW

10 Hp

450 ET

7.5 kW

10 Hp

650 ET

11 kW

15 Hp

Type

400 EM

Single-phase electric

450 ET

Three-phase electric

650 ET

Three-phase electric

Operating voltage/frequency

Different voltage / frequency available on request.
400 EM

230 V, 60 Hz

450 ET

400 V, 50 Hz

650 ET

400 V, 50 Hz

Rated current

400 EM

41.3 A

450 ET

15 A

650 ET

23 A

Speed (RPM)

400 EM

3.525

450 ET

2.870

650 ET

2.910

Protection class

IP55 (TEFC)

Available models of Force Four

(Non-standard models available upon request)

Discover Force Four at 360°