To Next Page
S
Samuel SawyerAug 26, 2025
Why am I getting a RATIO_HIGH_ALARM on my Graco Industrial Equipment?
- DdavismorganAug 26, 2025
A RATIO_HIGH_ALARM indicates there may be too little restriction in the system. Here's what you can check: * Ensure the system is fully loaded with material. * Verify the supply pump’s cycle rate is set correctly. * Confirm the spray tip/nozzle is properly sized and not worn. * Ensure the fluid regulator is set correctly. If the alarm occurs during start-up after purging, restrict gun needle travel to slow the initial fluid delivery rate. If it occurs after spraying for some time, adjust component A and B fluid supply regulator pressures until they are about equal. Also, ensure air pressure to the valve actuators is adequate (75-120 psi, with 120 psi recommended) and that there are no restrictions in the solenoid or tubing interrupting valve actuation air.
General
