IM-631 August 2014 General Installation, Operation and Maintenance Instructions For Aerovent Products Upblast Propeller Roof Fans Models: BSB53, BSD53 Aerovent Catalog 631 provides additional information on this equipment. This catalog can be found at www.aerovent.com or by contacting your local Aerovent sales representative.
Receiving, Unpacking & Inspection When the equipment is received all items should be carefully checked against the bill of lading to be sure all crates and cartons have been received. Before accepting delivery, carefully inspect each carton or crate for visible shipping damage. If any damage is noticed, the carrier should make the proper notation on the delivery receipt acknowledging the damage.
Installation Models BSD53 and BSB53 are all designed to be lifted onto the building by using the windband brackets which double as lifting points for these models. Units can be lifted onto the building with or without the windband mounted onto the unit. Straps or chain capable of handling the load of the unit should be securely attached to each of the four windband brackets. The unit should not be lifted by any other parts such as drive frame, motor, damper blades, windband, orifice panel, curb cap, etc.
Electrical Connection 1. Connect supply wiring to a disconnect switch. Check the wiring diagrams on the motor for connections. 2. The motor is factory set at the voltage marked on the fan nameplate. Check the line voltage with the nameplate voltage and wiring diagrams. 3. The main power wiring should be sized for the ampacity shown on the dataplate. Size wires in accordance with the ampacity tables in Article 310 of the National Electrical Code.
Maintenance Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations and experienced with this type of equipment. CAUTION: Sharp edges and screws are a potential injury hazard. Avoid them. WARNING Hazardous moving parts. Unit may contain protected fan motor which may start automatically and cause injury. Allow time for reset. Disconnect power before servicing.
15. Filter Maintenance (Filtered Supply Fans) Inspect the 2" Aluminum Mesh Filters on a regular basis. Clogged filters can adversely affect air performance. On all fan sizes the filters can be removed with the hood in place by removing the filter retainers from the hood end panels and sliding them out of the filter rails.
V-Belts V-belts on these belt driven fans are oil, heat, and static resistant type and oversized for continuous duty. With proper installation and maintenance, years of operating efficiency can be added to the lifespan of the V-belt drive. The condition of V-belts and the amount of belt tension should be checked prior to start-up (see Figure 1). When it becomes necessary to adjust belt tension, do not overtension as bearing damage will occur.
Fan Troubleshooting Chart PROBLEM POSSIBLE CAUSES FAN DOES NOT OPERATE 1. 2. 3. 4. 5. 6. Wrong voltage. Electricity turned off or not wired properly. Tripped overload protector. Blown fuses. Loose pulleys. Broken belts. TOO LITTLE AIR 1. 2. 3. 4. 5. 6. Propeller rotating in wrong direction. Fan speed lower than design. System is more restrictive (more static pressure) than expected. Restricted fan inlet or outlet. Inlet or outlet screens clogged. Filters, if applicable, are dirty or clogged.
