Controls On System; Pressure Regulator; Nozzle; Pressure Gauge - UDOR VY Series Use And Maintenance Manual

7. CONTROLS ON SYSTEM

7.1 PRESSURE REGULATOR

A pressure regulator valve must be installed to avoid the pressure exceeding the maximum limit indicated on the
Label of the Pump.
Use of the Pump, even for a short period, with a pressure higher than such limit would damage the Pump
itself.
The regulator valve shall be compatible with the maximum pressure, flow rate and temperature values written on the
Label.
Incorrect installation of the pressure regulator valve could cause serious personal injuries and damage to
property as well as seriously damaging the actual Pump.
The circuit must be equipped with another safety valve to prevent the maximum pressure from being
exceeded in the case of anomalies in the pressure regulator valve.

7.2 NOZZLE

A deteriorated nozzle could cause a drop in pressure; in this case, do not adjust the pressure regulator valve in the
attempt to increase the pressure of the system because when the delivery line closes, this would cause a boost in
pressure, which could damage the Pump.
If the pressure drops, it is advisable to replace the nozzle and adjust the system's pressure again.

7.3 PRESSURE GAUGE

Install a gauge on the Pump or as near as possible to the outlet of the Pump because the maximum pressure written
on the Pump's Label refers to the pressure detected on the head of the Pump and not on the nozzle or on other
accessories.
All the components of the machine or of the circuit must have technical specifications compatible with
the data written on the Pump's Label.

8. INSTALLATION, START UP AND SWITCHING OFF

8.1 POSITIONING

The pump is to be handled using exclusively the specific eyebolt supplied, hooking it to a rope or chain with the
specific hook and using suitable lifting equipment.
If the Pump is used in a particularly dirty workplaces or is exposed to atmospheric agents, you are recommended to
protect it, respecting the ventilation conditions.

8.2 ASSEMBLY

Fit the Pump on a rigid surface keeping the power take-off and support feet horizontal to ensure correct drainage in
the case of leakage of water or oil. The Pump must be secured firmly on a base, which must be perfectly aligned with
the transmission components. In the case of belt transmission, make sure the pulleys are aligned and check the
tension of the belts.
- In the operational phase, the maximum admitted inclination of the pump is 10°; if you should tilt it more, this
could cause insufficient lubrication of some of the components in the "Power End".
- The power take-off of the pump shaft must not be connected to the drive unit by means of rigid components.
Use appropriately sized hoses, both on the inlet and outlet of the Pump, according to the technical specifications
written on the Label.

8.3 START UP

Before starting, check the following:
- Replace the RED cap on the Pump Crankcase with the Oil Vented Plug in the kit of accessories
supplied.
- Check the level of oil through the dedicated clear level indicator on the rear cover or via the level rod of the
oil vent cap; top-up if necessary (see paragraph 9.3).
- Make sure all the pipes are connected properly.
- The pressure regulator valve must be set at "0" pressure to favour intake.
- Start the Booster Pump or open the line connected to the Pump inlet, respecting the minimum and
maximum supply pressure values (see paragraph 6.3).
Attention: the pump must never run dry!
Start and run the Pump until all the liquid has discharged from the delivery line without air bubbles.
The presence of air inside the pump during use under pressure could seriously damage the pump itself.
Once the suction cycle has been completed correctly:
- Adjust the pressure regulator valve and take the system to a pressure of approximately 100 bar (10 MPa - 1450
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