Operation (Pressure) - BD Sensors KHP 4002 User Manual

Tip: You can unscrew the tube and also directly attach the unit under
test to the pump body, using a suitable thread adapter. This decreases
the volume of the calibration circuit and makes operation of the test
pump more easily.
Open the filling plug (3) of the liquid reservoir (6) and fill with a suitable fluid:
Either a mineral oil based hydraulic fluid or distilled water. (Do not use
completely demineralised or repeatedly distilled water)
(Optional: Execution „S" to be used with brake fluid or Skydrok, but
NOT with oil.)
Fill the liquid reservoir (6) up to the lower edge of the type label.
If the pressure test pump is used with water, the reservoir must be emptied after
each usage of the pump.
If any dirt or particles are visible inside the fluid reservoire, you must change
(renew) the fluid immediately.

4. Operation (pressure)

4.1 Pressure generation KHP 4002 / KHP 6002
• First, check whether the change-over valve (4) has to be actuated (see sticker on
the device). For this purpose use a pen or a small screw-driver. The encasement of
the switch is intended to help prevent unintentional actuation.
Never actuate the change-over valve (4) when the test pump is under
pressure or vacuum! Actuate the change-over valve only, when the
relief valve is open.
• Please make sure that the pressure relief valve (3) is not closed completely.
• Make sure, that the adjustable knurled nut (6) is in such a position, that the visible
spring above the nut has some clearance, if the handles (5) are pressed together.
• Turn the fine adjustment valve (2) anticlockwise up to the end (smooth "stop" can be
felt).
• Carefully turn in the pressure relief valve (3) until the valve closes. You will not
notify any "hard stop".
• Operate the hand pump (5) until the approximate pressure has been reached, but
max. to 20 to 25 bar.
• Turn the fine adjustment valve (2) clockwise to increase the pressure to maximum
approx. 40 bar
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