Ingersoll Rand Refrigarated Air Dryer DXR200

DANGER: Dismantling or working on any component of the compressed air system under pressure may cause equipment failure and serious personal injury. Before dismantling any part of the dryer or compressed air system, completely vent the internal pressure to the atmosphere.

For continued good performance of your refrigerated dryer, all refrigeration system maintenance should be performed by a competent refrigeration mechanic.

Before corrective maintenance is done during the warranty period, call your local distributor and proceed according to instructions. Refer to the warranty for limits of your coverage.

Check the operation of the automatic drain valve at least once during each 8-hour shift.

On models 75 to 100 scfm, inspect and clean (if necessary) the drain valve strainer. See the Field Service Guide for remedies to drain valve malfunctions. See the Instrumentation section for drain valve adjustment.

For models with the System Operation Monitor, check the following readouts.

Refrigerant suction temperature

Refrigerant discharge temperature

• All DXR Serics dryers have a timer-controlled automatic drain valve. The valve body is mounted on the frame bottom; a hose connects the valve body to the separator.

CAUTION! Do not disassemble drain valve timer or attempt to repair electrical parts. Replace timer if defective.

• The drain valves discharge condensate through a full-port drain opening.

• The valve body may necd to be cleaned under conditions of gross particulate contamination. To disassemble the drain valve body for cleaning or other maintenance.

2. Disconnect main power supply to dryer.

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

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

4. Remove hoses that connect the drain valve to the separator.

Warning: Only perform this procedure on units equipped with the optional ambient air filter (designated by the suffix F in the model number)

Inspect the filter element. Does it need replacement?

Upload a photo of the old filter element

Upload a photo of the new filter element

Record the date of the element change

Enter the model number of the replacement element

Sign off on the filter replacement

Yellow SERVICE DUE indicator light on

If the SERVICE DUE indicator is on, complete the following steps

Disassemble and clean automatic drain valve

Disassemble and clean separator bowl (models DXR150 and larger)

Inspect the condenser coils, clean if necessary

Lubricate fan motors with 20 wt motor oil (if necessary)

Clean customer-supplied strainer

To reset the SERVICE DUE INDICATOR, follow these steps

DANGER! Vent internal pressure to atmospheric pressure before performing any maintenance.

Isolate the filter by opening the bypass valve, and closing both isolation valves.

Open the pressure bleed valve to vent the filter to atmospheric pressure.

Disconnect drain lines at manual and automatic drain valves (if installed).

DANGER! A 'hissing' sound while the bowl is being removed indicates the filter has not been properly depressurized. DO NOT continue to remove the bowl until the filter has been completely vented to atmospheric pressure.

CAUTION! Filter bowls may be heavy. Caution should be taken when removing the bowl.

Remove the bottom bowl by unscrewing it from the head. A strap wrench may be needed.

Remove the element from the filter head with a brisk downward pull, or by working the element back and forth until it snaps free. Discard the element in accordance with applicable regulations.

Clean accumulated debris from the bowl with soap and water, and dry thoroughly.