3
Construction and function
Connections:
MINIMESS
®
connection pressure hose.
Connector reference gauge.
Operating elements:
Pressure relief valve (rotary knob).
Fine adjustment valve (hand wheel).
Seal reservoir with safety valve.
Hand grips.
Main components:
Upper and lower pump body.
Reservoir with suction and relief out-
lets.
Piston rod with internal spring.
Pressure hose with MINIMESS
®
con-
nection.
Function:
The reference and the test sample or the pressure device to be tested (hereafter "test sam-
ple") are connected to the hand pump.
Pumping is carried out by repeatedly pushing the hand grips together. An internal spring re-
turns the hand grips to their start position..
The pumping movements are transferred to the pistons in the pump body via the push rods.
The hydraulic liquid is then suctioned from the storage container and pressed through valves
to the test item.
In the case of correct ventilation, this quickly leads to an increase in pressure. The construc-
tion of the hand pump means that the same pressure is generated for the test item as for the
reference test gauge.
The pressure is set to the necessary value using the
fine adjustment valve.
The hand wheel has a wide adjustment range from
"pump body stop collar " to "external stop" .
For storage and transport, the hand wheel should be
placed in position .
With the pressure relief valve, the pressure can be re-
lieved into the reservoir.
For the assessment of the test sample, the pressure displayed on the reference manometer
is compared with the measurement value.
