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6. OPERATION
6.1 GENERAL
DANGER
The blower is not intended to be used with explosive products or in explosive
environments.
WARNING
Do not operate without guards in place.
WARNING
Maximum operating speed: Table 2 states the maximum operating speed in
RPM (rotations per minute), the maximum pressure differential, maximum
vacuum and maximum temperature rise. Do not exceed these limits.
WARNING
The blower can generate excessive noise, hearing protection is required
while the unit is in operation.
Before starting the blower for the fi rst time under power, recheck the installation thoroughly to reduce the
likelihood of troubles. Use the following check list as a guide, but also consider any other special conditions
in your installation.
1. Be certain no bolts, rags, or dirt have been left in blower.
2. Be certain that inlet piping is free of debris. If an open outdoor air intake is used, be sure the opening is
clean and protected by an inlet fi lter. This also applies to indoor use.
3. If installation is not recent, check blower leveling, drive alignment, belt tension, and tightness of all
mounting bolts.
4. Be certain the proper volume of oil is in the oil reservoir chambers.
5. Be certain the driving motor is properly lubricated, and that it is connected through suitable electrical
overload devices.
6. With electrical power off and locked out to prevent accidental starting, rotate blower shaft several times
by hand to make sure blower is rotating freely. Unevenness or tight spots is an indication of a problem
that should be corrected before progressing.
7. Check motor rotation by momentarily pushing the start button and check fl ow direction of the blower.
Reverse the motor connections if fl ow is in the wrong direction.
Initial operation should be carried out under “no load” conditions by opening all valves and venting the
discharge to atmosphere, if possible. Then start motor briefl y, listen for unusual noises, and check that the
blower coasts freely to a stop. If no problem appears, repeat this check, and let the motor run a little longer.
If any questions exist, investigate before proceeding further.
Assuming all tests are satisfactory, the blower will now be ready for continuous full load operation. During
the fi rst several days, make periodic checks to determine that all conditions remain acceptable and steady.
These checks may be particularly important if the blower is part of a process system where conditions may
vary. At the fi rst opportunity, stop the blower and clean or remove inlet fi lter. Also, recheck leveling, coupling
alignment or belt tension, and mountlng bolts for tightness.