Greenheck Warehouse Make Up Air Unit DGX-125-H35-DB

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

Leave drains open and do not install plugs until beginning of cooling season;

Check the gas connections, joints and valves annually for tightness

Apply a soap and water solution to all piping

Watch for bubbling which indicates a leak;

Supply wheels require little attention when moving clean air

Occasionally oil and dust may accumulate on the wheel causing imbalance

When this occurs, the wheel and housing should be cleaned to assure proper operation;

Repair and replacement of the coil and the connecting piping, valves, etc., must be performed by a qualified individual

Inspect the coil for signs of corrosion and/or leaks

Inspect the coil’s surface for foreign material. If the coil surface needs cleaning, clean the coil from the leaving air-side so that foreign material will be washed out of the coil rather than pushed farther in

Inspect and clean the drain pan to prevent the growth of algae and other organisms

Be sure to read and follow the coil manufacturer’s recommendations before using any cleaning fluid

Caution must be used to avoid injury when venting the coil

High pressure and/or high temperature fluids can cause serious injuries;

Motor maintenance is generally limited to cleaning and lubrication (where applicable)

Limit cleaning to exterior surfaces only. Removing dust and grease build-up on the motor assures proper motor cooling

Grease motors supplied with grease fittings in accordance with the manufacturer’s recommendations

Do not allow water or solvents to enter the motor or bearings. Never spray motors and bearings with steam, water or solvents

Greasing motors is only intended when fittings are provided. Many motors are permanently lubricated, requiring no additional lubrication;