Specifications; Preparing For Use - EBARA PRA Operating And Maintenance Manual

OPERATING AND MAINTENANCE MANUAL PART 2
THE USER SHOULD KEEP THIS DOCUMENT
1. INTRODUCTION
This instruction manual is split into two booklets: PART 1,
containing general information regarding our whole product
range; and PART 2, containing information specific to the
motor-driven pump you have purchased. The two publica-
tions are complementary to each other, so make sure you
have both.
Comply with the instructions contained in them to get the
most out of your motor-driven pump and assure its proper
operation. If you need further information, get in touch with
your nearest authorized dealer.
If information in the two parts contradict each other, take
PART 2 containing the product's specific information as valid.
NO PART OF THESE ILLUSTRATIONS AND/OR TEXT MAY BE
REPRODUCED FOR ANY REASON.
The following symbols have been used in the compilation of
this instruction booklet:
WARNING
Risk of damaging the pump or system
Risk of causing injury or damaging property
Electrical hazard
2. CONTENTS
1. INTRODUCTION
2. CONTENTS
3. DESCRIPTION AND USE OF MOTOR-DRIVEN PUMP page 3

4. SPECIFICATIONS

5. PREPARING FOR USE

6. DIAGRAMS AND DRAWINGS
3. DESCRIPTION AND USE OF MOTOR-DRIVEN PUMP
3.1. DESCRIPTION
Description MOTOR-DRIVEN SURFACE PUMP
MODEL / Type PRA-PRI / Peripheral
3.2. USE FOR WHICH PUMPS ARE DESIGNED
For domestic use (gardening, fountains), for feeding boilers,
pressure vessel units, industrial, sanitary and air-condition-
ing applications. Suitable for drawing water from primary
storage tanks or well with a difference in level of 2-3 m.
Use the motor-driven pump based on its technical specifica-
tions.
3.3. USE FOR WHICH PUMPS ARE NOT DESIGNED
Pumps cannot be used to handle dirty water, water contain-
ing acids and corrosive liquids in general, water with tem-
peratures higher than those mentioned in chap. 4, saltwater,
flammable liquids and hazardous liquids in general.
The motor-driven pumps must never be made to work with-
out liquid.
4. SPECIFICATIONS
4.1. PRA - PRI PUMP SPECIFICATIONS
Max. temperature
of liquid pumped
Suction diameter
Delivery diameter
Maximum working
pressure
* = threading according to ISO 228
4.2. MOTOR SPECIFICATIONS
TYPE
RATINGS
OVERLOAD
PROTECTION
4.3. INFORMATION ON AIRBORNE NOISE
Pump
PRA/PRI
page 3
page 3
page 3
The table gives maximum sound emission values for the mo-
page 3
tor-driven pumps
page 19
* Sound pressure level - Mean value of measurements
taken one metre from the pump. Tolerance ± 2.5 dB.
5. PREPARING FOR USE
5.1. FILLING THE PUMP
WARNING
OPERATION TO BE PERFORMED WITH THE
MOTOR'S TERMINAL STRIP FULLY CLOSED.
PRA-PRI
a) Unscrew the hexagonal cap (1) (chap. 6 FIG. 1) located on
the fron t of the pump casing at the top;
b) with the aid of a funnel, fill the pump casing with water to
overflowing;
c) screw the hexagonal cap back on until it is locked tight to
prevent air getting in.
5.2. STARTING DIAGRAM (FIG.2)
To put the pump into operation, you must proceed as fol-
lows:
a) Insert a flat-tip screwdriver through the fan cover, in the
back of the pump, until it fits into the slot made on the
end of the rotor shaft;
b) Turn the screwdriver a couple of complete turns both
ways;
c) Connect the pump to the system.
U/M PRA
°C 80
* G1
0.6 (0.50)
MPa 0.75 (0.80)
1.2 (1.00-1.50-2.00)
TEFC
See motor-driven pump rating plate
SINGLE PHASE: unless otherwise
stated on the additional sheet,
thermal cutout w/ automatic reset
THREE PHASE: by installer
P2
Shaft height
[kW]
0.3÷0.45 63
0.6-0.75 71
1.1-1.5 80
PRI
90
EN
LpA [dB]*
<70
73
3