Technical And Building Features - EBARA Ego Operating And Maintenance Manual

(Ego B version with bronze body). They differ from standard fixed speed pumps
by having the option of continuous adjustment of the pump operation to the
actual needs of the system. This feature gives both great electrical and thermal
saving together with reduced noise level in the installation.
Before installing the pump, the system must be subjected to a high temperature
water wash (+85 °C ). The system must subsequently be emptied. This operation
allows to eliminate as much as possible any impurities present inside the system.
For the maintenance of a high efficiency of the system it is considered appropriate
to install a magnetic dirt separator filter to remove any residues of metallic
particles, limestone, sludge and suspended deposits.
Any damage deriving from solid, fibrous or abrasive substances, not attributable
to a product defect, will render the WARRANTY NOTHING.
In order to guarantee a regular operating of the pump, a fluid which is appropriate
for a central heating system, such as pure water or a solution of pure water and
antifreeze, must be provided. The water must meet water quality standards, such
as VDI 2035. Use the electropumps according to their specification.
5.2 NOT INTENDED USE
All uses not specifically mentioned in 5.1 are generally banned; in particular, the
fluid must not contain aggressive or explosive additives, mixtures of mineral oils
and/or solid or fibrous particles. The pump should not be used for pumping
flammable or explosive media, or in an explosive atmosphere. To avoid formation
of condensation in the pump, fluid temperature must be higher or equal to the
ambient temperature.

6. TECHNICAL AND BUILDING FEATURES

6.1 TECHNICAL DATA
Supply voltage: 230V, 50-60Hz
Protection class: IP44
Insulation class: F
Motor protection: the pump is provided with a draining labyrinth inside the
electromotor casting; do not insulate the pump as this can cause serious damage.
Speed/pressure Regulated mode
curve [W]
I
3-21
II
4-21
III
5-21
6.2 LIMITS OF USE
The allowed maximum pressure in the system is 1 MPa (10 bar).
The minimum pressure at suction shall be:
Ego (B) -/40
Unregulated mode Regulated mode
[W]
9
15
21
Ego (B) -/60
Unregulated mode
[W] [W]
4-36 12
5-36 24
7-36 36
Ego (B) -/80
Regulated mode Unregulated mode
[W] [W]
6-57 21
5-57 36
8-57 57
GB
13