The Thorlabs PTA522, PTA523, and PTA524 are automatic silent compressors designed for various applications requiring a quiet and reliable air source. These compressors are suitable for indoor use only and are not designed for use in an explosive atmosphere.
Function Description
These compressors provide a continuous supply of compressed air, operating with low noise levels, making them ideal for environments where quiet operation is crucial. They are equipped with features for automatic operation, including pressure regulation and condensate drainage, to ensure consistent performance and ease of use. The compressors are designed to be user-friendly, with clear instructions for installation, operation, and maintenance.
Important Technical Specifications
The PTA series compressors come in three models (PTA522, PTA523, PTA524), each tailored for different regional power requirements and offering slightly varied performance characteristics.
General Specifications:
- Maximum Altitude: 2000 m
- Temperature Range: 15°C to 40°C
- Maximum Humidity: Less than 80% RH (non-condensing) at 31°C
- Line Voltage Fluctuations: Less than ±10% of the line voltage
- Sound Pressure Level: 50 dB (A) (PTA522, PTA523), 51.1 dB (A) (PTA524)
- Unit Dimensions: 410 x 360 x 380 mm (16 x 14 x 14 inches)
- Gross Weight: 17 kg (37 lbs)
- Oil Type: ROLOIL - SINCOM/32E
Model-Specific Specifications:
| Parameter |
PTA522 (US) |
PTA523 (UK) |
PTA524 (EU) |
| Input Voltage (Frequency) |
115 V (60 Hz) |
230 V (50 Hz) |
230 V (50 Hz) |
| Rated Input Current |
1.9 A |
1.0 A |
1.0 A |
| Rated Power |
140 W |
130 W |
130 W |
| Free Air Delivery |
20 L/min (0.71 cfm) |
17 L/min (0.63 cfm) |
17 L/min (0.63 cfm) |
| Air Tank Pressure (min/max) |
6 bar (90 psi) / 8 bar (120 psi) |
|
|
| Air Tank Capacity |
3.5 L (0.92 US gal.) |
|
|
| Air Tank Fill Time from empty |
110 seconds (@ 60 Hz) |
|
|
| Sound Pressure Level |
50 dB(A) |
50 dB(A) |
51.1 dB(A) |
The compressor features an extremely low noise emission at 50 dB(A) and is not entirely vibration-free. It is recommended to locate the unit as far as possible away from the Optical Table or other vibration-sensitive hardware.
Usage Features
The PTA series compressors are designed for straightforward operation.
- Installation: The kit includes the compressor, one oil bottle (ROLOL-SINCOM/32E), one bottle nozzle, a 20 cm length of clear plastic tube, and an instruction manual. The outlet regulation valve (a) is removed from the main compressor unit during transport and must be re-attached to connection port (c) using a 19 mm (or adjustable) spanner.
- Electrical Connection: The compressor must be connected to an outlet protected by a suitable circuit breaker. The cable powering the compressor or any extensions must have a wire cross section proportional to the length (e.g., 1 mm² for lengths up to 3 m, and 1.5 mm² for lengths from 3 m to 20 m).
- Pneumatic Connection: The pressurized outlet of the compressor unit is supplied with a push-fit connector suitable for Ø6 mm outside diameter pressure hose. To fit the hose, simply push it in. To release the hose, push the blue collar towards the fitting and pull the hose out.
- Starting: Ensure the module is in the Off state, insert the power plug into the mains outlet, and start the compressor by turning the switch to "Auto." The compressor's working process is automatic, switching on and off as necessary to maintain the tank pressure.
- Adjusting Outlet Pressure: The outlet air pressure is fully adjustable between zero and the tank pressure by turning the knob on the regulator valve. Fully anticlockwise means the regulator valve is closed (no output from the compressor unit), while fully clockwise means the regulator valve is fully open, providing maximum output pressure available from the compressor unit.
Maintenance Features
Regular maintenance is crucial for the longevity and optimal performance of the compressor.
- Oil Fill: The compressor is normally shipped empty of oil. Check the oil level through the oil sight glass and follow the oil-fill instructions. Use only Thorlabs part PTA1006 oil.
- Draining the Condensate: The PTA522/523/524 compressors are fitted with a zero-humidity condensate filtration system that automatically drains condensate generated inside the air tank, collecting the discharge in the drainage bottle. This process is performed every time the compressor is started and periodically while the compressor motor is running, with the period settable on the timer unit. The auto drain does not operate when the motor is idle. The mixture of oil and water in the drained condensate appears as a brown colour in the bottle and is completely normal.
- Venting the Compressor Air Tank: The compressor air tank needs to be vented for several reasons, including during maintenance. This can be done by venting through the pressure relief valve or through the outlet pressure valve.
- Checking the Pressure Filling Time: Empty the compressor air tank using either method given in section 3.4.5, close the manual isolation valve at the outlet, start the compressor, and check that there are no leaks on connections. Check that the max. pressure (8 bar/120 Psi) is achievable.
- Maintenance Schedule:
- Once a Day: Drain the water collected in the air outlet pressure regulator by pushing the needle valve button at the base of the filter bowl. Check the oil level via the view glass.
- Once a Week: Perform a manual draining cycle by pressing "TEST" button on the timer (see section 3.4.4: Draining the Condensate). Empty the drainage bottle.
- Once a Month: Check the integrity of the compressor, including possible connectors slackening, pressure hose wear, screws tightening, electric circuit integrity, etc. Clean the compressor with a soft cloth; excessive dust and dirt can prevent the compressor from cooling efficiently.
- Every 3 Months: Check and clean the air intake filter with compressed air. Replace as necessary. Clean the air intake filter.
- Once a Year: Check for any air leaks on the outlet pressure regulator. Check the safety valve by pulling the hose-connector end gently when there is pressure in the tank, ensuring that air escapes. This test is easier to perform, the higher the pressure is within the tank (easiest at 8 bar). Drain and replace the oil. Check the integrity of the O-ring of the oil level glass and replace if damaged. Tighten the oil level glass in its seat again and check that during the operations the O-ring is sealing properly; if needed, put some sealing liquid on the oil level glass thread before re-inserting it in its seat. Refit the flexible hose and the four base locating bolts. Refill with oil.
- Troubleshooting: The manual provides a comprehensive troubleshooting guide for common issues such as the compressor not starting, not reaching maximum pressure, stopping while working, leaks, and issues with the condensate valve. It also covers checks for air leaks, clogged air intake filters, and ensuring the ambient temperature is not too high.
The PTA series compressors are designed for reliable and quiet operation, making them a suitable choice for various laboratory and industrial applications where a consistent and low-noise compressed air source is required. Regular maintenance as outlined in the manual will ensure optimal performance and extend the lifespan of the device.
Need help?
General
To Next Page