Annovi Reverberi HIGH PRESSURE PISTON PUMPS User Manual

MEMBER OF

CPA

cleaning power association

OPERATING INSTRUCTIONS AND

MAINTENANCE MANUAL FOR HIGH

PRESSURE PISTON PUMPS

Fig.1a- A&R pump XT 8.14N - Dx (RHS)

INDEX

Page

General technical features of high pressure pumps 1

AFETY STANDARDS 1

S

Installation 2
Input water supply 2
Before starting up 2
During running 3
Switching off and storing precautions 3
Trouble shooting 3
Maintenance standards 4 ÷ 6
Gearbox assembly XT - XR 6
Charts 8

page

1

VOLUME
PRESS.
R.P.M.

Fig.2a- Nameplate

8 L/min
140 bar
1450

ATTENTION

GENERAL TECHNICAL FEATURES OF HIGH PRESSURE PUMPS

The range of A/R plunger pumps is used with flows from 8 to 40 Litres/min.
(2.1 to 11 gpm) and with maximum pressures of 250 bar ( 3600 PSI). Each
type of pump is designed and developed to work at the performance
indicated on the pumps

nameplate.

If, infact, the flows depends upon:

a) the diameter of the piston,
b) the stroke of the piston,
c) the number of pistons,
d) the number of stokes for minute;

kW
HP

XT 8.14

2,2
3

the pressure generated by the pump depends upon the choice of the nozzle,

IT IS THEREFORE A NECESSITY THAT THE PRESSURE AND THE R.P.M. REMAIN
WITHIN

THE MAXIMUM VALUES INDICATED.

The pumps are made of special materials, which are resistant to corrosion
such as stainless steel, ceramic compounds, brass and aluminium alloys
with protective treatments.
Ceramic pistons, moving parts in an oil bath, oil level dipstick and oil level
window for quick check. High quality packings with easy access, making
for rapid maintenance, as well as inspection friendly suction/outlet valves.
The hydraulics are separated from the crank mechanism with a recovery
and recycling system for leaks, thereby avoiding the pollution of the
lubricating oil.

SAFETY STANDARDS

• Do not spray persons or animals with a high pressure jet.

• If driven by an electric motor, the machine must be equipped with a

protective circuit which guarantees the operator's safety from high
voltage.

•If driven by a gas engine, do not use the unit indoors. Discharge gases

include carbon monocide an odourless but lethal gas.

ANNOVI & REVERBERI S.p.A. - 41100 Modena (Italy)

Via Martin Luther King,3 - Zona Industriale Torrazzi

Tel. [phone] - Telex 511314 AR-I - Telefax 059/25.35.05

INSTALLATION

page

2

Outlet

LHS

➦

O

Inlet

Fig.1b- The pump can rotate either in
clockwise or anticlockwise direction.

RHS

The pump must be installed horizontally, blocked in a stable manner, by
means of the coupling flanges suitable for the type of motor/engine with
which the pump will be driven. If pulley drive is used, you must have a
protection guard.
.The pumps can rotate either clockwise or anticlockwise.
Suction and outlet piping can be attached either to the left hand side or right
hand side of the pump.
The suction hose must:

- be of a diameter equal to from 1 to 1.5 times the suction part of the pump,

- set up in such a way as to avoid the forming of air pockets,

- be as short as possible and hermetically attached to the pump to avoid
sucking air.

Below please find an example of a correct installation:

Pump

Outlet

Filter

OUTOUT

OUT

OUTOUT

ININ

IN

ININ

Pressure

gauge

⇑

Inlet

MINIMATIC / ZEROMATIC 83
GYMATIC / COMBISET

Gun Nozzle

By-pass

High pressure

hose

Filter mod.FAS

COD.3000, max 20L/min

38 MESH

Fig.4b- Check the suction filter
periodically.

Fig.5b- Replace the
RED cap with the
dipstick supplied
with the pump.

Fig.2b- Installation schematic with pressure regulating valve

INPUT WATER SUPPLY

Utilize liquids free from impurities (such as sand or other solid particles
which will affect the efficiency of the valves, the piston and the packings).
For this reason it is advisable to fit a filter on the suction hose, with a large
filtering surface and low load loss. Replace the filter as soon as it becomes
clogged up, to avoid noisy operation and pulsations which can damage the
mechanical parts of the pump. If the pump draws from a tank place the filter
at the entrance of the same.

NB: Maximum temperature of pumped liquid is 60°C (140°F),
maximum forced suction (measured at the pump) is

10 bar (145

PSI).

BEFORE STARTING UP

1. The pump is supplied complete with oil, so the first thing to do is remove

the red cap utilized for transportation, and insert the dipstick which is
supplied with the pump.

2. Check that oil is at the correct level, by means of the oil level window

topping up if necessary using oil type indicated in chart 1.1 page 8.

3. Make sure that inlet water flow is sufficient-at least the same value as the

pump flow and that it comes out without air bubbles.

4. Prime the pump with the outlet completely open.

5. Then start up the motor, if using a gas engine bring the RPM 's up to pre-

set level.

DURING RUNNING

1

1

2

2

Check the efficiency of the hydraulic circuit whilst pump is running: drips
or signs of wear on the hoses can cause injuries as well as prejudicate the
life and performance of the machine.
If the circuit recycles by means of a by-pass, avoid running the pump for
long periods of time without pulling the trigger since this heats the liquid
up and could damage the seals.

TURNING OFF AND STORING PRECAUTIONS

1. Pull the trigger whilst turning off the machine, to make sure no high

pressure spraying is possible.

2. Turn off the motor.

3. Turn off inlet liquid supply.

TORING

S

3

3

If the pump is not used for more than 30 days, proceed as follows:

- empty it of all pumped liquid, taking care to do the same with all pipings
and accessories,

- clean it by removing any calcareous deposits,

- wrap up in a protective cover,

- store in a clean and dry place, protected from frost.

page

3

PROBLEM CAUSE REMEDY

The pump doesn't reach required pres­sure

The pump is noisy
Pressure gauge fluctuates

Water leaks from the bottom of the
pump

Water leaks from head

Oil leaks from the bottom of the pump

TROUBLE SHOOTING

Unsuitable or worn out nozzle
Reg. valve seat worn out

Pump sucking air
Valves blocked by foreign bodies, or

worn
Packing worn
High temperature of pumped liquid

Piston packing worn

Head O-Ring worn

Oil seals worn

Replace nozzle
Replace valve seat

Check suction manifold
Clean or replace valves

Replace packing
Reduce temperature of pumped liquid

Replace piston packing

Replace O-Ring

Replace seals

Over pressure when gun is closed

Leaking in unloader valve and incor­rect setting

Control the valve and set new pressure
level