Ingersoll Rand Refrigerated Air Dryers TM400

Inspect the condenser coils for air-cooled condensers

Remove dust, dirt or other particles with a soft brush or with compressed air from an OSHA-approved air nozzle that limits its discharge pressure to 30 psig

If the coils are coated with oil, grease or other substances that reduce the cooling efficiency, clean the coils with a solvent

Follow the solvent manufacturer's directions for proper use and disposal, including the use of proper protective equipment

Sign off on the monthly maintenance

Biological and organic substances (slime) can also cause problems, but in elevated temperature environments such as cooling processes they are not a major concern. If they create problems with clogging, com mercial shock treatments are available.

To ensure continued good operation and performance of the dryer cooling system, the recommended ranges for different water constituents are below.

Iron - Concentration <2 ppm - Monthly Analysis

Sulfate - Concentration <50 ppm - Monthly Analysis

Chloride - Concentration <50 ppm - Monthly Analysis

Nitrate - Concentration <2 ppm - Monthly Analysis

Silica - Concentration <100 ppm - Monthly Analysis

Oil and grease - Concentration <5 ppm - Monthly Analysis

Warning: This procedure requires trained personnel with PPE!

Fouling: Biological and organic substances (slime) can cause problems, but in elevated temperature environments such as cooling processes they are not a major concern. If they create problems with clogging, commercial shock treatments are available.

To ensure continued good operation and performance of the dryer cooling system, the recommended ranges for different water constituents are below.

Is the dissolved oxygen concentration 0 ppm (as low as possible)?

Sign off on the water quality analysis

Check the operation of the automatic drain valve

Inspect and clean (if necessary) the drain valve strainer

Dryers with the Intelli-Dry Controller

Dryers with Optional Intelli-Dry RX Controller

WARNING: If power supply is not disconnected before disassembly, serious personal injury and valve damage may result.

Disconnect main power supply to dryer.

Lock out and tag power supply in accordance with OSHA requirements.

Remove screw and washer from front of valve.

Remove the power supply connector and gasket from the solenoid coil housing. Do not damage or lose the gasket.

Remove 13mm nut and spring washer from top of solenoid coil housing.

Lift solenoid coil housing off solenoid core in valve body.

Unscrew solenoid core from valve body.