8
ELECTRICAL CONNECTIONS
Wire the motor and other electrical devices, such as solenoid valves and temperature switch, to the proper voltage and amperage
as indicated on the nameplate of each component being wired. Turn the machine by hand after wiring is completed to determine
that there are no obstructions, and if the blower turns freely momentarily start the unit to check the direction of rotation. The air flow
direction can be reversed by reversing the appropriate motor leads.
RELIEF VALVES
We recommend the use of relief valves to protect against excessive pressure or vacuum conditions. This valve should be tested at
initial start-up to be sure they are properly adjusted to relieve at or below the maximum pressure differential rating of the blower.
CAUTION: Upon completion of the installation, and before applying power, rotate the drive shaft by hand. It must
move freely. If it does not, look for uneven mounting, piping strain, excessive belt tension, coupling misalignment
or any other cause for binding. If blower is removed and still does not rotate freely, check inside the blower
housing for foreign material.
PIPING
Inlet and outlet connections on all blowers are large enough to handle maximum volume with minimum friction loss.
Maintain same diameter piping.
Silencers must not be supported by the blower.
Stress loads and bending moments must be avoided.
Be certain all piping is clean internally before connecting to the blower. We recommend placing a 16-mesh wire screen backed with
hardware cloth at or near the inlet connections for the first 50 hours of use until the system is clean. Make provisions to clean the
screen after a few hours of operation and completely discard it once the system is clean, as it will eventually deteriorate and small
pieces going into the blower can cause serious damage. A horizontal or vertical air flow piping configuration is easily achieved by
rearranging the mounting feet position.
WARNING: Do not operate equipment without adequate silencing devices since high noise level may cause
hearing damage. (Reference OSHA Standards).
LUBRICATION (SPLASH)
Before starting the unit, fill oil reservoirs as instructed below:
Remove fill plugs or breathers from gear (drive) end and free (non-drive) end plates.
Pour oil through fill hole until oil appears in sight glass. Slowly bring oil up to center of glass. Repeat for both end plates. Each
oil sump must be filled independently.
Re-seal plugs and reinstall in end plates.
Oil levels should be checked frequently. Unit must be shut down to properly check oil levels.
PLEASE NOTE THE FOLLOWING:
Time lapse between oil changes will vary depending on operating conditions.
Higher blower operating temperatures are directly related to higher oil temperatures.
Every Tuthill Vacuum & Blower Systems blower has been factory tested, oil drained, and shipped dry.
Oil reservoirs must be filled to proper level before operation.
Lubricants approved for use in Tuthill blowers are shown on page 15.
Add oil in the quantity shown in the specifications table on page 5.
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