North American 2600 Hot Air Blowers Instructions
Instructions 2600-2
INSTALLATION Install blower in an accessible place, being careful not to twist base when bolting to foundation. Mount the blower on a concrete pad whenever possible to prevent vibration. The pad mass should be a minimum of three times the mass of the blower. If blower must be mounted on a structure, a formed concrete base is preferred. If blower must be mounted directly, the structure must be heavy and rigid enough to prevent vibration. Shim properly before tightening mounting bolts. Use shims between the base and the pad when bolting blower down to prevent twisting or straining the base, which could result in premature failure. Pipe blower inlet and outlet to manifolds without putting strain on blower housing. Flexible sleeves must be used on the blower discharge and the inlet to prevent strain from the piping, due to expansion or inadequate support. All piping should be supported independently. Use lightweight pipe when possible, but make sure it is air tight. Small leaks can add up to significant air loss. Make sure that dual voltage motors are correctly connected and connections are clean, tight, and well insulated. Blowers should never be run with outlet wide open, or without proper restrictions in its delivery line to prevent motor overload. Make sure starter has proper heater elements. With blower in operation at its maximum required air output, check load and compare with specifications on motor nameplate to prevent damaging the motor. Make sure impeller rotates in direction indicated by arrow on blower housing.
3. Check to make sure that flex sleeves have been installed in the inlet and outlet piping. 4. Check to see that the correct heater coils have been installed in the motor starter. 5. Check to see that the motor leads are correctly connected for the available voltage supply. 6. Check to make sure that the impeller and motor turn freely. 7. Check that there is adequate restriction in the air line to prevent overloading of the blower at start-up. After these checks have been completed: 8. Close the circuit breaker supplying the blower starter. 9. “Bump” the blower by pushing the blower “Start” button and then immediately pushing the blower “Stop” button. 10. While the blower is coasting to a stop, check for correct rotation. A blower running backwards will not develop rated pressure or flow. Correct rotation if necessary. 11. Start the blower. If there are any unusual noises, shut the blower off immediately and check for incorrect impeller clearances or foreign objects in the blower housing or piping. 12. Check the blower amps and discharge pressure at high fire after the main air control valves have been adjusted.
MAINTENANCE
Blower motors are greased when shipped from Fives North American Combustion, Inc. They should be greased periodically in accord with motor manufacturer's specifications. If any blower is not used for extended periods, its shaft should be rotated (by hand) several times every few weeks to redistribute grease.
OPERATION
Before energizing the blower motor, take the following steps: 1. Check to make sure that the circuit breaker supplying the blower motor starter is open and locked out. 2. Check that the blower base is securely bolted to the floor.
Monitor motor amperage when adjusting air control valves to prevent overloading.
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