Greenheck Warehouse Make Up Air Unit DGX-110

Warning: Only trained personnel should perform this procedure

Motor greased in accordance with manufacturer’s recommendations

Water or solvents entered the motor or bearings?

If water or solvents entered the motor or bearings, report to the maintenance team immediately

Sign off on the motor maintenance

Warning: Always ensure the burner is turned off and cooled down before starting the maintenance.

Inspect the burner for accumulation of scale on both the upstream and downstream sides of the mixing plates.

Remove foreign material with a wire brush.

Visually check that all holes in the mixing plates are clear.

If any burner ports are plugged (even partially), clear them with a piece of wire or another appropriate tool. Do not enlarge burner ports when clearing a blockage as performance could be affected.

Replace or tighten any loose or missing fasteners on the mixing plates.

Always use appropriate fasteners.

Inspect and clean the flame rod or UV scanner.

Occasional replacement of the flame rod and spark rod may be necessary to ensure optimum unit performance.

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

Warning: This procedure should be performed by trained personnel only!

Gas connections, joints and valves are tight

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

Sign off on the gas train check

Warning: Ensure the fan is turned off and disconnected from power before starting the procedure.

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

Fan turned off and disconnected from power?

Bearings selected to match the maximum load and operating conditions?

Enter the current load on the fan

Enter the current operating conditions of the fan

Bearings lubricated prior to extended shutdowns or storage?

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