Greenheck Warehouse Make Up Air Unit DGX-109

Warning: This procedure should be performed by a trained professional

Gas connections, joints and valves are tight

Upload a photo of the applied soap and water solution to all piping

Any bubbling observed indicating a leak

Sign off on the gas train check

Warning: This service requires trained personnel with PPE!

Is there oil and dust accumulation on the wheel?

If there is oil and dust accumulation, proceed with the cleaning procedure

Enter the balance reading of the wheel after cleaning

Sign off on the supply wheel service

Test the circulating fluid for sediment, corrosive products and biological contaminants

Describe the corrective measures taken if any contaminants were found

Maintain adequate fluid velocities and proper filtering of the fluid

Are automatic air vents utilized?

If automatic air vents are not utilized, periodic venting of the coil is recommended to remove accumulated air

Sign off on the chilled water coil maintenance

Is there a large amount of mineral build-up?

If yes, clean or replace the media and increase the water bleed-off or drain and fill rate.

Is the media older than 5 years?

Select the type of media used for replacement

Is the media installed correctly?

Sign off on the evaporative cooling module maintenance

Warning: This procedure should be performed by trained personnel only

Close valves on the supply and return lines

Open drain valves and/or drain plug

Remove vent plug to allow coil to drain faster

After coil is fully drained, connect a blower to the caps. Do not connect the blower to the air vent or drain plug

Close the vent plug on the header that the blower is connected to. Open the drain valve or cap on the other header

Place mirror at discharge. If the mirror fogs up, repeat procedure until no fog appears on the mirror

After drying the coil, wait a few minutes then repeat Step #5