Shure 8000 Heat Pump User Manual


 
A bypass pump may be used in application that would normally
induce frequent start/stop of the motor, and thereby create a
potential for overheating. Models equipped with an internal bypass
are designed to pump at high pressure while at low flow rates.
Bypass models equipped with a switch may operate for several
seconds even though the discharge side has been closed off.
Models equipped with a bypass only will continue to run until
power is turned OFF.