Espa Tecno 25 [3/20] Instruction manual
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Espa Tecno 25 [3/20] Instruction manual

Espa Tecno 25 [3/20] Instruction manual
INSTRUCTION MANUAL
Safety precautions
This symbol together with one of the following words
“Danger” or “Warning” indicates the risk level deriving from failure to observe
the prescribed safety precautions:
DANGER Warns that failure to observe the precau-
risk of tions involves a risk of electric shock
electric shock
DANGER Warns that failure to observe the precau-
tions involves a risk of damage to persons
and/or things.
WARNING Warns that failure to observe the precau-
tions involves the risk of damaging the pump
and/or the plant.
1. GENERAL INFORMATION
Please observe the following instructions to achieve the best
pump performance possible and a trouble free installation.
These are self-priming horizontal multistage centrifugal pumps
having more than one impeller assembled in-line. The same flow
passes through each impeller but the pressure increases each
time, i.e. more impellers, more pressure. Tecnoself are manufac-
tured to include a recirculation system with automatic valve
achieving suction lifts of up to nine meters. By using a foot valve
on the suction pipe the pump will rapidly self-prime when oper-
ated.
These pumps are designed to operate with clean water, free from
particles in suspension and with a maximum temperature of 35
degrees centigrade.
Correct pump operation is assured providing the instruc-
tions on electrical connection, installation and use are
strictly adhered to.
Failure to adhere to the instructions can result in premature
failure of the pump and voiding of the warranty.
2.- INSTALLATION
2.1 - Fixing
The pump should be installed on a solid, horizontal base, secured
by screws or bolts and using the existing holes in the mount. (2
screws Ø8). Ensure that the pump mount rests squarely on the
base before fixing.
2.2 - Suction pipe assembly
The suction pipe, if longer than 7 meters, must be of the same or
greater diameter than the pump inlet and installed in an upward
inclination to prevent trapped air pockets forming.
If the pump is required to perform a suction lift, to avoid unneces-
sary losses of head on the discharge side, the pump should be
installed as close as possible to the water.
The end of the suction pipe must always remain at least 30 cm
below the water level.
2.3 - Discharge pipe assembly
It is recommended to use pipes with a diameter equal or greater
than the pump outlet. This will reduce loss of head caused by fric-
tion in longer pipe runs.
Pipework must be supported and not rest on the pump.
If a foot valve has not been installed it is recommended to fit a
check valve to prevent accidental draining down of the system.
2.4 - Electrical connection
The electrical installation must have a multi pole isolator with
minimum * 3 mm contact openings protected by a 30 ma.
residual current detector (earth leakage trip).
Single phase motors have built-in thermal protection.
On three phase motors the installation of a thermal protec-
tion system is the responsibility of the end user.
Follow instructions given on fig.1 for correct electrical
connection.
2.5 - Pre-start checks
Ensure the voltage and frequency of the supply correspond
to the values indicated on the electrical data label.
Ensure that the pump shaft is rotating freely.
Fill the pump body with water through the self priming plug
opening. If a foot valve has been installed, also fill the
suction pipe.
Check all joints and connections for leaks.
THIS PUMP MUST NEVER BE DRY RUN.
3. STARTING
Ensure all valves in the pipework are open.
Connect power supply.There will be a delay before water appears
at the end of the discharge pipe.
Viewing from the fan ensure that the rotation of the motor is clock-
wise. On three phase pumps the motor may rotate anticlockwise.
If this is happening the flow will be lower than expected. To rectify
this situation the two supply phases need to be reversed.
Ensure that the absorbed current is the same or lower than the
maximum shown on the electrical data label. Adjust the thermal
relay to suit when using three phase models.
If the pump fails to operate refer to the possible faults, causes and
solutions list for assistance.
4. MAINTENANCE
Under normal conditions these pumps require no special or
planned maintenance.
If the pump is not to be operated for a long period it is
recommended to remove it from the installation, drain down
and store in a dry, well ventilated place.
ATTENTION: In the event of faults or damage occurring to
the pump, repairs should only be carried out by an autho-
rised service agent.
When the pump is eventually disposed of, please note that
it contains no toxic or polluting material. All main compo-
nents are material identified to allow selective disposal.
3

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INSTRUCTION MANUAL Safety precautions than the pump outlet This will reduce loss of head caused by fric tion in longer pipe runs This symtxrl A AS together with one of the following wads Pipework must be supported and not rest on the pump Danger or Warning indicates the risk level de ng Iran hi lure to observe If a foot valve has not been installed it is recommended to fit a the preset iocd safety precautions check valve to prevent accidental draining down of the system DANGER rlsk Warns of tons that failure involves a Warns that to risk observe of the precau electric shock observe the 2 4 Electrical connection electric shock The electrical installation must have a multi pole isolator with DANGER hilae B minimum precau 3 mm contact openings protected by a 30 ma residual current detector earth leakage trip tions involves a risk of damage to persons Single phase motors have built in thermal protection and or things On three phase motors the installation of a thermal protec tion system is the responsibility of the end user WARNING Warns that failure to observe the precau Follow tions involves the risk of damaging the pump 1 GENERAL INFORMATION Please observe are having more passes following self priming than through time i e instructions tured to horizontal one each more impeller impeller impellers include to achieve the the suction a pipe on fig 1 for correct electrical best multistage assembled but more the in line The pressure pressure recirculation centrifugal same with are the pump will rapidly self prime opening manufac voltage and frequency of the supplycorrespond If a foot valve has been Installed also fill the suction pipe valve when the to the values Indicated on the electrical data label Fill the pump body with water through the self priming plug each automatic Ensure Ensure that the pump shaft is rotating freely flow increases Tecnoself system pumps achieving suction lifts of up to nine meters By using a foot valve on given 2 5 Pre start checks the pump performance possible and a trouble free installation These instructions connection and or the plant Check all joints and connections for leaks oper THIS PUMP MUST NEVER BE DRV RUN ated These pumps are designed to operate with clean water free from particles in suspension and with a maximum temperature of 3 STARTING 35 Ensure all valves in the pipework are open degrees centigrade Correct i tions Connect power supply There will be a delay before water appears pump on operation electrical is assured connection providing installation the and at the end of the discharge pipe instrucuse Viewing from the fan ensure that the rotation of the motor is clock are wise strictly adhered to On three phase pumps the motor may rotate anticlockwise If this is happening the flow will be lower than expected To rectify Failure to adhere to the instructions can result in premature this situation the two supply phases need to be reversed failure of the pump and voiding of the warranty Ensure that maximum 2 INSTALLATION the shown absorbed current on electrical the is the data same or label Adjust lower than the the thermal relay to suit when using three phase models If the pump fails to operate referto the possible faults causes and 2 1 Fixing solutions list for assistance The pump should be installed on a solid horizontal base secured by screws or bolts and using the existing holes in the mount 2 screws 08 Ensure that the pump mount rests squarely on the 4 MAINTENANCE base before fixing Under The suction pipe if longer than 7 meters must be of the same or greater diameter than normal conditions these pumps require no special or planned maintenance 2 2 Suction pipe assembly the pump inlet and installed in an If the pump is not to be operated for a long period It is upward recommended inclination to prevent trapped air pockets forming to remove it from the installation drain down and store in a dry well ventilated place If the pump is required to perform a suction lift to avoid unneces sary losses of head on the discharge side the pump should ATTENTION In the event of faults or damage occurring to be the pump repairs should only be carried out by an autho installed as close as possible to the water rised service agent The end of the suction pipe must always remain at least 30 an below the water level When the pump is eventually disposed of please note that 2 3 Discharge pipe assembly it It is recommended to use pipes with a diameter equal or greater ESPA contains no toxic or polluting material All nents are material identified to allow selective disposal A main compo

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