Air Brake Test Check Daily

Question 1

Build pressure in primary and secondary system until compressor unloads

(120-133psi)

Answer 1

Low air alarm goes off at 65psi

Question 2

• Shut engine off when the air pressure rises to 120-133psi or compressor unloads.
• With Brakes released and Wheels Chocked.
• Apply brakes firmly.
• After the intial pressure drop, the pressure should not fall more than 3psi in one minute.
• Step on and off the brake pedal to reduce air system tank pressure.

Answer 2

Check for air leaks whe foot is on brake pedal.

Question 3

The low air pressure warning alarm/light should sound below 65psi system pressure on gauge.

Answer 3

• If not the alarm may be disconnected.
• Do not disconnect any warning alarms.
• Call fire Maintenance

Question 4

The Yellow parking brake valve should pop up at approximately 40-60psi, thus should set the parking brake.

Answer 4

• Low buzzer and and light will come on.
• Warning alarm/light will go off above 65psi.

Question 5

Start engine. Build up air pressure system to 120-133psi. or until the compressor unloads.

Answer 5

• If there are leaks, or air compressor does not build air pressure to 120-133 psi, Call fire Maintenance.