6 System integration
Operation manual mzr-4622
Last update: March 2019
Technical data subject to change without prior notice!
27
3.
In order to avoid dry operation of the device, provide before each operation
for a sufficient liquid supply.
Warning
Dry run of the micro annular gear pump may damage in particular the bearing
and the sealing. However, a short dry working phase at the beginning of the
operation is harmless.
6.3.3
Assembly instruction for tubing and accessories manifold assembly
The manifold assembly has two ports 1/4"–28 UNF for liquid supply
connection.
The fluid connection fittings feature standardized plastic tubing or stainless
steel tubing with a diameter of 1/16" (1.588 mm), 3 mm 1/8" (3.175 mm). The
fluid connection fittings are composed of a threaded part, a lock ring and a
ferrule. The seal effect is obtained thanks to the plane ending of the ferrule and
the tube. The threaded part assures the required pressing force.
plain
chamfer
lock ring
ferrule
fitting
tube/
pipe
figure 20
Fluid connection fitting 1/4"-28 UNF, stainless steel
1.
Cut the tube with a hose cutter to the 90° angle. Metal tubing, that
produce swarf during cutting must be throughoutly cleansed and flushed.
The smallest piece of swarf in the delivery system may cause failure of the
micro annular gear pump.
2.
Slide the fitting on the hose or tube.
3.
Slide on the lock ring, chamfer towards the end of the hose or tube.
4.
The ferrule should be stuck on the hose or tube in a way that the end of
the tubing and the ferrule fit tightly together. The conical part of the ferrule
should be directed towards the thread.
5.
Put the hose or tube with the ferrule into the liquid supply ports of the
micro annular gear pump. Hold the tube or hose firmly and screw in the
threaded part. Retighten the stainless steel threads with a wrench by
turning it about 1-1½ times. It is important that during this operation the
tube remains pressed against the bottom of the liquid supply port.
6.
In order to avoid dry operation of the device, provide before each operation
for a sufficient liquid supply.
