ACPM Facts
HOW DO I SAVE DOWN TIME?
 
1. Allows you to use your own personnel to do basic maintenance such as cleaning out the condenser exterior, replacing electric condenser fan motors (a certified A/C technician is not needed to perform these functions). Reduces your A/C repair bills by prompting maintenace when it’s needed ... not after the damage is done.
 
2. Prompts operators to inform maintenance personnel to clean condenser or replace fan motors, saving the cost of a field service call.
 
3. It reduces down time; you know a problem is developing ahead of time and take action to prevent A/C breakdowns created by the high discharge pressure.
 
4. It saves you money on costly repairs by keeping your A/C systems in optimal condition and correcting small problems before they become big ones.
 
5. A/C systems are designed to operate for many years under the specifications they were designed for. The A/C Pressure Monitor helps you keep your condenser clean and stay within specifications to get the full life out of it.
 
6. It prevents damage to many components by stopping short cycling and shutting down the compresser clutch circut when discharge pressure is too high or total loss of freon.
 
7. It’s proven effective in over 100,000 hours of on-site testing.
 
8. Considering the down time and cost each time an A/C system breaks down, the A/C Pressure Monitor can easily pay for itself.
 
 
HOW DOES IT WORK?
 
  • The A/C Pressure Monitor measures pressure in the A/C condenser and notifies the operator with a warning light when it detects a problem.
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  • It prevents short cycling due to high discharge pressure. Short cycling occurs when the compressor engages and disengages as it triggers its own high pressure switch, causing severe wear without correcting its cause. The A/C Pressure Monitor shuts down the compressor clutch circut until it is reset.
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  • It shuts down the compressor clutch circut, if freon is lost, and triggers the red indicator light.
     
  • The green indicator light means discharge pressure is within normal peramiters and has freon.
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  • The yellow light means a condensing problem. A/C condensers require maximum airflow. When airflow is reduced, discharge pressure increases. When pressure exceeds 300 psi, The A/C Pressure Monitor signals the operator with a yellow light. This signal indicates that the condenser is either restricted or, with electric fans, that one or both motors have stopped. It’s the signal to the operator that basic maintenance is needed to prevent damage to the system.
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  • The red light means shut down. When pressure becomes extreme (over 350 psi), the red light illuminates. This tells the operator that the condenser is extremely plugged or defective, that the electric condenser fans have stopped or there is a lack of airlow over the condenser. The A/C Pressure Monitor will shut down the compressor clutch circut until reset.
 
 
FACTS
 
Most system failures are caused by a dirty (heavily restricted) condenser or condenser fan failures.  This causes extremely high discharge pressures which results in a component failure.
 
The A/C monitor is designed  to be installed by a certified A/C technician.
 
Install only on a properly working system that is at OEM specifications.
 
This monitor will not correct a poorly designed system or one which has a problem.
 
A certified A/C technician will be needed to troubleshoot and repair any refrigerant problems and to insure it is at OEM spec before installation.

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