Oil Cooler
Air-cooled oil cooler that automatically manages hydraulic oil temperature
It switches on and off by itself according to the set temperature, keeping the hydraulic oil at the right temperature to protect the equipment and preserve ride comfort.
- Capacity
- 7 · 14 · 20 kW
- Cooling method
- Air-cooled
- Temperature control
- Digital
Causes of heat generation in hydraulic elevators
- Pressure loss due to internal friction, viscous resistance and leakage inside the hydraulic pump
- Pressure drop in the controls and piping
- Pressure loss from passing through pressure relief and pressure-reducing valves
- Rise in hydraulic oil temperature due to causes such as losses from motor efficiency
Effects of temperature on the elevator
- A rise in temperature means the oil viscosity decreases, and decreased viscosity means the control valve does not control accurately.
- A rise in oil temperature has an adverse effect on the hydraulic motor.
- Reduced viscosity of the hydraulic oil means the oil must be changed sooner.
Why an oil cooler is needed We recommend installing an oil cooler to protect the equipment, extend the service life of the hydraulic oil and maintain a comfortable ride.
Capacity, dimensions and operation
| Capacity | Heat output | L x W x H (mm) | Cooling method | Temperature setting | Operation |
|---|---|---|---|---|---|
| 7 kW | 6,000 kcal | 592 x 475 x 971 | Air-cooled | Digital temperature controller | Automatic On/Off by set values Upper limit 45℃ Lower limit 30℃ |
| 14 kW | 12,000 kcal | 692 x 475 x 971 | |||
| 20 kW | 17,000 kcal | 784 x 575 x 1170 |
Structure and parts
| Part No. | Part name | Material | Specification & drawing No. | Qty |
|---|---|---|---|---|
| 1 | Motor | 3Ø 220/380 V, 60 Hz | BRONZONI (Italy) | 1 |
| 2 | Pump | SMT 75L (90 ℓ/min) | Settima (Italy) | 1 |
| 3 | Radiator | DNOC1010 | 1 | |
| 4 | Fan/Motor | 3Ø, 4P, 220 V, 60 Hz, 0.185 kW | Ø400 | 1 |
| 5 | Terminal Box Ass'y | SS41 | DNOC1009 | 1 |
Why Donam oil coolers?
- Excellent cooling effect.
- Simple, with automated operation.
- Uses a digital temperature controller
- Simple, attractive exterior, with easy electrical assembly and piping connection.
Starts at 45℃Starts when a set temperature (45℃ at shipment) is reached
Stops at 30℃Stops when a set temperature (30℃ at shipment) is reached