Pneumax 140-SP, Руководство по установке

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Pneumax PTO-Driven Compressor Kit Installation Guide
Page 5 of 36
Power take-off suggestions
There are many PTO suppliers and various types of transmissions available, and the choice
of PTO will in part depend on what can be installed in the vehicle. "Hot Shift" PTOs are
commonly used.
Make sure that there will be room to install the air compressor on a bracket close to the
PTO, with their drive angles matched.
Caution: The driveline angles MUST be matched to prevent serious damage to the compressor,
PTO, or transmission.
Specific gear ratios vary among the different transmissions and PTO suppliers. The ratios
suggested below are a guide for selecting the PTO. With these ratios, the rated CFM is
usually achieved with the engine speed between 1400 to 1600 RPM.
Caution: A higher speed on the PTO means the CAFS system will reach the desired CFM at
lower engine speeds. Exceeding the compressor's rated RPM can damage the
compressor, and void the warranty. In such applications, an over speed cut-out
should be installed on the PTO to protect the compressor.
DO NOT engage PTO above 1000 Engine RPM.
To calculate the possible compressor RPM, use this equation:
Engine RPM x gear ratio on PTO x compressor gear ratio = compressor RPM
80-SP Compressor
CFM required PTO speed HP average
80 160% HI 22
80 184% HI 22
140/200-SP Compressor
CFM required PTO speed HP average
120-140 143% HI 32-40
200 160% HI 55-60
Some applications may require a PTO running faster than typical requirements, for
example:
200 187% HI 55-60