TapFlo Steinle FH 25, Original Instruction

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2. OPERATION
Steinle Filter Press Pump Series
18
2. OPERATION
2.1. Before starting the pump

Make sure the pump is installed according to the installation instruction (chapter 1).

Filling of the pump with liquid before start is not necessary. Only at high suction lift it
may help to fill the pump with water on the suction side to increase the suction
capability.

When installation is new or reinstalled, a test run of the pump with water should be
conducted to make sure that the pump operates normally and does not leak.
2.2. Starting and operation

Open the discharge valve.

Pull out the red button on the control box to switch the control power.

Note! Considering the suction capacity when air is still in the suction pipe, it is
recommended to start with low air pressure/flow (slowly) at the beginning. This
is not necessary if the pump is filled with liquid before start.

When the pump has been filled with liquid, the air pressure/flow may be raised in order
to increase the suction capacity of the pump.

Below maximum allowable stroke frequency for cycles. Please run the pump with the
lowest possible speed. Stroke - One move of single diaphragm. Two strokes per cycle.

FP25: 60 1/min

FP40: 83 1/min

FP50: 58 1/min

FP80: 75 1/min

The performance of the pump can be adjusted through the air supply by using a needle
valve and a pressure regulator. The performance can also be adjusted by normal flow
control on the discharge side of the system.
2.2.1. Dry running
Although the pump is prepared for dry running it is important to have in mind that long
periods of dry run may increases the wear. Also, an empty pump should operate at low
speeds – controlled by a needle-valve.
2.2.2. Optimization of the pump lifetime

Running at full frequency (maximum air pressure/flow) continuously will cause
premature wear of the components.

As stated in chapter 1.8.1 Tapflo recommends using an appropriate air treatment system
in order to extend the pump’s lifetime.

If the air humidity is high, use of a water separator or air dryer is recommended.
Otherwise on the air discharge side due to decompression, icing on the muffler can
appear causing it to shrink and eventually it can shoot out of its socket.