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;

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;

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;

Fan bearings are carefully selected to match the maximum load and operating conditions of the specific class, arrangement and fan size

The instructions provided in this manual and those provided by the bearing manufacturer will minimize any bearing problems

Lubricate bearings prior to periods of extended shutdowns or storage and rotate shaft monthly to aid in corrosion prevention

If the fan is stored more than three months, purge the bearings with new grease prior to start-up;

Test the circulating fluid for sediment, corrosive products and biological contaminants. Take the necessary corrective measures

Maintain adequate fluid velocities and proper filtering of the fluid

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