The patented early warning system (see illustrations 2 and 3) works as follows:
Each hose is provided with a small additional channel through which the air in the upper section of the pumping chamber is evacuated from the pump housing. Therefore, a vacuum is formed in the sealed aluminum housing. In the case of damage or normal wear of hose, the vacuum will drop.
The early warning can be seen through the installed vacuum gauge. An acoustic or optical signal can be activated by using the vacuum switch.
By this the hose condition is monitored for optimum service planning.
Downtimes through normal wear can be predicted.