Operating Conditions And Directions For Use - ProMinent mikro g/5a Instruction Manual

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ProMinent mikro g/5a
Precision feeding pump
Page 8
If present connect the float switch or contact/control cable to the pump after
removing the dummy connector or protective cap. The connectors for the contact/
control cable (9) and float switch (10) must be occupied at all times either by a
shunted dummy connector or by the connected control or signal cable and float
switch. For this reason dummy connectors should be kept once they have been
removed. Set the desired flow output using the respective nomogram (see technical
data). Select the desired electronic function in accordance with the following
description:
Sucking and bleeding:
Plug in power into mains socket and set stroke length to 10.00 mm. Then press the
"STOP" key (5) to avoid uncontrolled pumping. Loosen bleed screw (17a) on the
back pressure valve (half a turn). Start automatic quick-priming by simultaneously
pressing the Up and Down keys (4). Keep the keys depressed until the media comes
out of the liquid end. Close the bleed screw.
Important: Do not allow the pump to run dry for a long period as otherwise the
plunger is subjected to increased wear.
Important: Particular care must be taken during the initial operation procedure to
ensure that only Bal-Seal seals are used on pumps for metering demineralised water
(TT3, SS3).
Note: If the metering pump is equipped with valve springs, the intake line must be
filled during initial operation. Self-priming is not possible!

3.3 Operating conditions and directions for use

The admissible ambient temperature is -10 °C (only for media with a freezing point
< -10 °C) up to + 45 °C. If higher temperatures are to be used, the maximum stroke
rate must be lowered from the maximum frequency, for each degree C by approx.
2 strokes per minute.
Relative humidity: 10-92 %, not condensing.
If the pump has been disconnected from the power supply, even after years the
pump always returns to the last mode selected when it is switched on again.
On/off switching by means of connection function is possible with the universal
control cable and voltage-free contact. Switching elements with voltage-free
contact or transistor with open collector. The contact load is approx. 0.5 mA at 5V.
If the pump is to be connected parallel with an inductive power consumer, such as
a solenoid valve or an electric motor, the metering pump must be electrically isolated
when other loads are switched on. The power supply must therefore take place via
an auxiliary contactor or a relay. If this is not possible a varistor (part no. 71.09.12.7)
or a RC combination (0.22 µF/ 470 Ohm) must be connected parallel to render the
harmful induced voltage of the power consumer harmless.
Instruction manual
mikro g/5a
VA-pipe 1/8" or 1/16"
Thrust collar 1/8" or 1/16"
Bracing ring 1/8" or 1/16"
Terminal nut 1/8" or 1/16"
2370-4