We have purchased a KBT pump ПМЭ-710-1к. The gauge is filled with some liquid. Should it be so?

Yes. There is glycerin inside the gauge. It is done to minimize the possible tremor of the arrow caused by differences in pressure or by equipment connected to the pump. The gauge is not fully filled with glycerin, there is always some air inside.

The pump ПМР-7020-К2 does not have an auto pressure relief valve. How can the pressure be released after the operation cycle is completed?

Turn the distributor to the counter position to release pressure.

After some time of working with the pump ПМР-7020- К2, we have noticed that the pressure is built up slower than before. What is the reason for that?

One of the reasons for that is an open breather, that should be opened by 1\4-1\2 turns so that you also prevent too much air inside the pump.

The pump ПМЭ-7050-К2 does not have a distributor to change the pressure flow from one channel to another. How can the oil supply be changed to the other channel?

The control pedal of the pump has two modes: position 1 for pressure supply to one channel, position 2- for pressure supply to the other channel. If you want to change the channel that gets the pressure, press the pedal aiming at the other position, it will cause pressure release. Only one position of the pedal can be active in pumps ПМЭ-7050. A simultaneous supply of pressure to both channels is impossible in this type of pump.

How can I make and release pressure with the pedal of the pump ПМЭ-7050?

When the pedal is pressed the pump begins to make pressure, release the pedal to release pressure.

How can I hold the pressure with the pump ПМЭ-7050У?

This pump is designed with a function of pressure hold. There are three modes that can be set on the control pedal: 1) make pressure, 2)hold pressure, 3) release pressure.

I would like to have a high-pressure hose longer, that is in the set with the pump ПМЭ-7050. What will I need to ensure a tight connection of the hose with the tool and the pump?

The high-pressure hose should have quick-release valves at both sides. Use a thread-fill tape to ensure properly sealed connection.

The pump ПМН-7012 does not have any valve to release pressure by hand. How should I release pressure when the working cycle is done?

Press the pedal rhythmically several times to make pressure. After the operation is complete pressure a small lever that is placed on the rear part of the pump.

Can I use two or three tools simultaneously with the help of hydraulic distributing tap КГР-3?

Yes, but you should take into account the total oil volume for all tools and add some volume that needs to be inside the hoses. You shouldn’t also forget that the time of the working cycle can differ for different tools.