HydraMaster CTS 330, Руководство пользователя

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5
MODEL NUMBER: This identifi es the specifi c model of the blower.
SERIAL NUMBER: Each blower has a unique serial number. This number is to be used with any
service issues and with any contact with the manufacturer.
YEAR: This states the year that the blower was manufactured.
MAWP: This states the maximum allowable working pressure (MAWP) of the blower casing.
This is NOT the allowable maximum pressure differential. When determining the
pressure differential, the inlet pressure shall be taken into account to assure that the
MAWP is not exceeded.
The standard MAWP is per Table 2. The MAWP shall not be exceeded unless
specifi c factory testing of the pressure containing components of the blower has
been performed.
Contact the factory for testing and documentation if this pressure is to be exceeded.
3. LIFTING
WARNING
The blower must be handled using an appropriate device such as a fork
truck or appropriate lifting device. See Table 1 for approximate weights.
Care should be taken to assure blower does not over-turn during handling
and installation.
4. DESCRIPTION
NOTE
Refer to specifi c data sheets for fl ow capacities and vacuum capacities.
NOTE
Refer to diagrams in this manual for proper rotation and orientation in inlet
and discharge.
Tuthill Vacuum & Blower Systems Competitor model rotary lobe blowers are positive displacement type
units, whose pumping capacity is determined by size, operating speed, and differential pressure conditions.
Blowers employ rotors rotating in opposite directions within a housing closed at the ends by end plates.
Effective sealing of the inlet to the discharge is accomplished through the use of very small operating
clearances. The resulting absence of moving contact eliminates the need for any internal lubrication.
Clearances between the rotors during rotation are maintained by a pair of accurately machined helical
timing gears, mounted on the two shafts extended outside the air chamber. The intermeshing rotary lobes
are designed to rotate and trap air or gas between each rotor and the housing. As the rotor lobes rotate
past the edge of the suction port, the trapped air or gas is essentially at suction pressure and temperature.
Since the blower is a constant volume device, the trapped air remains at suction pressure until the leading
rotor lobe opens into the discharge port. The close clearances between the rotors inhibit back slippage of
the trapped volume from between the rotors and the trapped volume is forced into the discharge piping.
Compression occurs not internal to the blower, but by the amount of restriction, either downstream of the
blower discharge port, or upstream of the blower inlet port.