Werther Silent Air Compressor

No, the compressor must be a 11 BAR or 165 psi maximum pressure unit in order to maintain at least 10 BAR or 145 psi minimum pressure during the strenuous vacuum test cycle. Additionally, the filtering system for the compressor must remove both oil and particulates from the compressor lines to protect the Proofmaster from being damaged and prevent an expensive repair. 

Prior to turning the compressor on, please follow the following instructions:

1. Fill the compressor with the provided oil. Remove the oil fill plug and pour in the oil until it reaches halfway up the oil level sight glass.

2. Remove the red shipping cap from the air intake port at the top of the until and install the filter.

3. Turn the red on/off pressure flow valve parallel to the piping, allowing pressure to flow from the compressor to the Proofmaster.

4. Attach the pressure valves/filters to the compressor.

5. Attach the Proofmaster hose to the quick-change valve.

6. Turn on the compressor.

If it is currently set at 160 PSI, perform a 10-BAR test and monitor the PSI pressure on the gauge as it decreases. Take note of the pressure when the compressor turns on to refill the tank. The compressor must turn on at 10-BAR or 145 PSI, or else the “NO AIR” warning will appear on the ProofMaster. 

If the pressure is below 160 PSI, lift the red plastic top of the gauge valve and turn it clockwise to raise the pressure to 160 PSI. Run another test to confirm the issue is resolved. If you continue to experience problems, please feel free to reach out to our support team at 800-776-6858.

The compressor should be set to a maximum pressure of 160 PSI, with a minimum refill pressure of 145 PSI to ensure proper operation.