Ingersoll Rand Refrigarated Air Dryer TS4A

Ensure all air pressure is fully discharged and isolated from the system.

Ensure the machine cannot be started accidentally or otherwise, by posting warning signs and/or fitting appropriate anti–start devices.

Ensure all residual electrical power sources (mains and battery) are isolated.

Ensure the refrigeration is recovered by a qualified technician with the appropriate certifications to handle refrigerants.

Ensure the appropriate fire control and oil spill equipment is available.

Ensure the work carried out is limited to only those tasks which require the machine to run.

Ensure appropriate personal protective equipment is worn.

Ensure loose clothing, jewelry, long hair etc. is made safe.

Prior to attempting any maintenance work, ensure that all air pressure is fully discharged and isolated from the system, the machine cannot be started accidentally or otherwise, by posting warning signs and/or fitting appropriate anti–start devices, and all residual electrical power sources (mains and battery) are isolated.

Prior to opening or removing panels or covers to work inside a machine, ensure that anyone entering the machine is aware of the reduced level of protection and the additional hazards, including hot surfaces and intermittently moving parts.

Prior to opening the refrigeration circuit, ensure that the refrigeration is recovered by a qualified technician with the appropriate certifications to handle refrigerants, and the appropriate fire control and oil spill equipment is available.

Prior to attempting any maintenance work on a running machine, ensure that the work carried out is limited to only those tasks which require the machine to run, all hazards present are known, appropriate personal protective equipment is worn, loose clothing, jewelry, long hair etc. is made safe, and warning signs indicating that Maintenance Work is in Progress are posted in a position that can be clearly seen.

Upon completion of maintenance tasks and prior to returning the machine into service, ensure that the machine is suitably tested, all guards and safety protection devices are refitted, all panels are replaced, canopy and doors closed, and hazardous materials are effectively contained and disposed of.

Oil visible in the sight glass while the machine is running on load?

All air pressure is fully discharged and isolated from the system.

The machine cannot be started accidentally or otherwise, by posting warning signs and/or fitting appropriate anti–start devices.

All residual electrical power sources (mains and battery) are isolated.

Anyone entering the machine is aware of the reduced level of protection and the additional hazards, including hot surfaces and intermittently moving parts.

The refrigeration is recovered by a qualified technician with the appropriate certifications to handle refrigerants.

The appropriate fire control and oil spill equipment is available.

The work carried out is limited to only those tasks which require the machine to run.

Appropriate personal protective equipment is worn.

Warning: This procedure should only be performed by a qualified refrigeration technician.

Dryer loaded with a minimum of 80% of full compressed air rated load?

Dryer parameters stabilized (30 minutes with no changes in conditions)?

Refrigerant gauge reading from low side Schrader connection

Wall temperature reading from thermocouple or similar device

Allow dyer to stabilize (30 minutes with no changes in conditions) after adjustment before checking evaporated superheat.

Checked setting on each evaporator and thermal expansion valve before making adjustments?

NOTICE! Do not adjust the low pressure below 5.03 barg (73 psig) or above 5.66 barg (82 psig).

Warning: This procedure should be performed by trained personnel only.

Enter the local ambient temperature change

Is the 2RPS condenser fan switch about to close and start the fan(s)?

Select the direction of the hot gas valve adjustment

Enter the compressed air dewpoint

Sign off on the refrigerant pressure adjustment