Instructions Manual
High-pressure piston pumps
XLT IEX – XLT HT IEX series
Cod. doc. M.I.XLTIEX-XLTHTIEX
Rev.
0
Page 18 of 32
This Manual is the property of the Manufacturer; any reproduction in any form, even partial, is prohibited.
5
FITTING AND INSTALLATION
Read this section with due care and attention before attempting to install the machine.
Incorrect installation of your pumping system may cause injuries to people and damage to property. So, it
is essential to comply with all instructions listed below.
It is important to work in a clean environment when installing the machine.
Pumps must be installed by direct coupling to the motor, which must be selected specifically among ATEX-certified products,
compatibly with the pump certification..
You must use a suitable elastic coupling joint in case of direct coupling with the electric motor (see
Attachment III).
Make sure the pulleys are aligned when driven; adjust the belt tension and provide adequate safety
protection.
Excessive belt tension can cause the oil to overheat, reduce bearing life and create a danger of explosion.
The pump should be installed horizontally with respect to the base to facilitate optimum lubrication, on an anti-
vibration base.
Check the direction of the motor and crankshaft rotation (indicated near them): they must match.
The pump’s suction pipe must be proportional to the volume and its diameter must not be less than the suction
mouth. It is important that there are as few bottlenecks on this pipe as possible (elbows, T couplings, reductions,
etc). Each junction on the suction pipe must be sealed properly with Teflon tape or a similar product to avoid leaks
or air intake (cavitation). Cavitation is the formation of bubbles of steam in the liquid: their implosion generates
abnormal stress which is very damaging for all pump parts. To safeguard optimum pump life, avoid the circulation
of liquid containing sand or other solid particles as this affects the efficiency of valves, the plungers and seals.
This can be prevented by fitting an oversized filter on the suction pipe with respect to the pump volume. The filter
should be cleaned regularly.
The delivery pipe must be able to support the operating pressure of the pump. Excessively narrow passages can
result in lance pressure loss.
To prevent injury or damage to the pump, it is essential to fit a pressure control valve and a safety valve to
prevent the pressure accidentally exceeding its operating level. Contact our technical staff before fitting these
valves.
To keep the system pressure under control, a pressure gauge should be fitted on the delivery line with an
appropriate bottom scale.
The motor-pump direct coupling requires application of lubricant grease (sect. 3.10).
Connection types with different specifications or not contemplated in this manual shall not ensure full
conformity with the certifications provided by LEUCO S.p.A. (Dir. ATEX) who shall not be liable for the
selection of other options than those specified in this manual.
If you have doubts, we recommend contacting the Manufacturer’s Engineering Department.
