Xylem LOWARA ecocirc PRO User manual

Installation, Operation
and Maintenance Manual
ecocirc PRO
High efficiency hot water circulation pump

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2 ecocirc PRO – Installation, Operation and Maintenance Manual
Table of Contents
1Introduction and Safety ............................................................................................................................................ 4
1.1 Introduction ...................................................................................................................................................... 4
1.2 Safety ................................................................................................................................................................ 4
1.2.1 Danger levels and safety symbols ............................................................................................................... 4
1.2.2 User safety .................................................................................................................................................... 5
2Handling and Storage............................................................................................................................................... 7
2.1 Handling of the packed unit ............................................................................................................................ 7
2.2 Unit inspection upon delivery.......................................................................................................................... 7
2.2.1 Inspect the package ..................................................................................................................................... 7
2.2.2 Unpacking and inspection of the unit ......................................................................................................... 7
2.3 Unit handling .................................................................................................................................................... 8
2.4 Storage ............................................................................................................................................................. 8
3Technical Description ............................................................................................................................................... 9
3.1 Designation ...................................................................................................................................................... 9
3.2 Integrated features and functions ................................................................................................................... 9
3.3 Data plate ....................................................................................................................................................... 10
3.4 Model description ..........................................................................................................................................10
3.5 Names of the main components and accessories ........................................................................................11
3.6 Intended use...................................................................................................................................................12
3.7 Improper use ..................................................................................................................................................13
4Installation ............................................................................................................................................................... 14
4.1 Precautions ..................................................................................................................................................... 14
4.2 Installation area .............................................................................................................................................. 14
4.3 Hydraulic connection ..................................................................................................................................... 14
4.3.1 Guidelines for the hydraulic system ..........................................................................................................15
4.3.2 Installation .................................................................................................................................................. 16
4.3.3 Rotation of the pump motor ...................................................................................................................... 16
4.3.4 Insulation .................................................................................................................................................... 18
4.4 Electrical connection...................................................................................................................................... 18
4.4.1 Ground........................................................................................................................................................ 18
4.4.2 Guidelines for electrical connection..........................................................................................................19
4.4.3 Guidelines for timer connection ................................................................................................................20
5Use and Operation..................................................................................................................................................21
5.1 Precautions ..................................................................................................................................................... 21
5.2 Before starting................................................................................................................................................21
5.3 First starting ....................................................................................................................................................21
5.4 Air purge.........................................................................................................................................................22
5.5 Setting the timer............................................................................................................................................. 22

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ecocirc PRO – Installation, Operation and Maintenance Manual 3
5.6 Operation modes ...........................................................................................................................................24
5.6.1 Fix speed models ....................................................................................................................................... 24
5.6.2 Variable speed models ..............................................................................................................................24
5.6.3 Fix speed models with fix value temperature control ..............................................................................24
5.6.4 Fix speed models with variable value temperature control.....................................................................24
5.6.5 LED light ..................................................................................................................................................... 25
5.6.6 Motor protection from overtemperature ..................................................................................................25
5.6.7 Dry run protection ......................................................................................................................................25
5.6.8 Power Down Reset (PDR)........................................................................................................................... 25
5.6.9 Temperature sensor error mode ...............................................................................................................25
6Maintenance............................................................................................................................................................ 26
6.1 Precautions ..................................................................................................................................................... 26
6.2 Maintenance ...................................................................................................................................................26
6.3 Disassembly....................................................................................................................................................26
6.4 Replacing the pump motor............................................................................................................................27
6.4.1Replacement motors..................................................................................................................................27
6.4.2 Pump units for replacement ......................................................................................................................27
7Troubleshooting......................................................................................................................................................28
7.1 Precautions ..................................................................................................................................................... 28
7.2 Error signals....................................................................................................................................................28
7.3 Pump not running .......................................................................................................................................... 28
7.4 Pump running for 1 minute periods only ......................................................................................................28
7.5 Pump is noisy.................................................................................................................................................. 28
8Technical Information .............................................................................................................................................29
8.1 Operating environment .................................................................................................................................29
8.2 Pumped liquid ................................................................................................................................................29
8.3 Electrical characteristics .................................................................................................................................29
8.4 Mechanical characteristics ............................................................................................................................. 30
8.5 Dimensions and weights................................................................................................................................30
8.6 Hydraulic curves ............................................................................................................................................. 31
8.7 OEM models................................................................................................................................................... 32
9Disposal...................................................................................................................................................................33
9.1 Precautions ..................................................................................................................................................... 33
9.2 WEEE (50 Hz).................................................................................................................................................. 33
10 EU Declaration of Conformity............................................................................................................................34
11 Warranty .............................................................................................................................................................35
11.1 Information .....................................................................................................................................................35

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4 ecocirc PRO – Installation, Operation and Maintenance Manual
1Introduction and Safety
1.1 Introduction
Purpose of this manual
This manual provides information on how to do the following in the correct manner:
•Installation
•Operation
•Maintenance
CAUTION:
This manual is an integral part of the unit. Make sure to have read and
understood the manual before installing the unit and putting it to use.
Failure to follow these instructions can cause
personal injury and damage to
property, and may void the warranty and result in the loss of all entitlement to
claim damages.
NOTICE:
The manual must always be made available to the user
either as a printout or a
s
a downloaded and offline stored electronic file.
Supplementary instructions
The instructions and warnings of this manual apply to the standard unit as described in the sale
documentation. Special version pumps may be supplied with supplementary instruction
manuals. For situations not considered in the manual or in the sales document, contact Xylem
or the Authorised Distributor.
1.2 Safety
WARNING:
•
The operator must be aware of safety precautions to prevent physical injury.
•
Operating, installing, or maintaining the unit in any way that is
not covered in
this manual could cause death, serious personal injury, or damage to the
equipment. This includes any modification to the equipment or use of parts
not provided by Xylem. If there is a question regarding the intended use of
the equipment, please contact a Xylem representative before proceeding.
•
Do not change the service application without the approval of an authorized
Xylem representative.
1.2.1 Danger levels and safety symbols
Before using the unit, the user must read, understand and comply with the indications of the
danger warnings in order to avoid the following risks:
•Injuries and health hazards
•Damage to the product and its surroundings
•Unit malfunction

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ecocirc PRO – Installation, Operation and Maintenance Manual 5
Danger levels
Hazard level
Indication
DANGER:
It identifies a dangerous situation which, if not
avoided, causes serious injury, or even death.
WARNING:
It identifies a dangerous situation which, if not
avoided, may cause serious injury, or even
death.
CAUTION:
It identifies a dangerous situation which, if not
avoided, may cause small or medium level
injuries.
NOTICE:
It identifies a situation which, if not avoided,
may cause damage to property but not to
people.
Complementary symbols
Symbol
Description
Electrical hazard
Hot surface hazard
Danger, system pressurized
Do not use flammable liquids
Do not use corrosive liquids
Read the instruction manual
1.2.2 User safety
Electrical hazard
DANGER: Electrical hazard
The unit must not be used if the cable or the electrical compartment is damaged.
Damaged cable may only be replaced (so that danger is avoided) by the
manufacturer, its service agent or a trained professional electrician.

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6 ecocirc PRO – Installation, Operation and Maintenance Manual
Qualified personnel
WARNING:
This unit must be used only by qualified users. Qualified users are people able
to recognise the risks and avoid hazards during installation, use and
maintenance of the unit.
Inexperienced users
WARNING:
•
For EU countries:
this product may be used by children aged 8 years and
above and persons with reduced physical, sensory or menta
l capabilities, or
who lack experience and knowledge, provided that they are being
supervised and have been instructed on how to use it safely, and understand
the hazards involved. Children must not play with the product. Cleaning and
maintenance must not be carried out by children without supervision.
•
For countries outside the EU:
this product is not intended for use by persons
(including children) with reduced physical, sensory or mental capabilities, or
who lack experience and knowledge, unless they are being supervised and
have been instructed on how to use it by a person respon
sible for their safety.
Children should be supervised to ensure that they do not play with the
product.
General safety rules
•Always keep the work area clean.
•Pay attention to the risks presented by gas and vapours in the work area.
•Avoid all electrical dangers. Pay attention to the risks of electric shock or arc flash hazards.
•Always bear in mind the risk of electrical accidents and burn injuries.
Safety equipment
It is recommended to use the proper safety equipment within the work area:
•Hard hat
•Safety goggles
•Protective shoes
•Protective gloves
•Hearing protection
Electrical connections
Electrical connections must be made by certified electricians in compliance with all international,
national, state, and local regulations.
Precautions before work
Observe these safety precautions before you work with the product:
•Make sure that you have a clear path of retreat.
•Allow all system and pump components to cool before you handle them.
•Make sure that the product has been thoroughly cleaned.
•Disconnect and lock out power before you service the pump.
Precautions during work
Observe these safety precautions when you work with the product:
•Rinse the components in water after you disassemble the pump.
•Do not exceed the maximum working pressure of the pump.
•Do not open any vent or drain valve or remove any plugs while the system is pressurized.
Make sure that the pump is isolated from the system and that pressure is relieved before you
disassemble the pump, remove plugs, or disconnect piping.

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2Handling and Storage
2.1 Handling of the packed unit
WARNING:
Take appropriate measures during transport, installation and storage to prevent contamination
from external substances.
The Manufacturer delivers the unit and its components in a cardboard box.
2.2 Unit inspection upon delivery
2.2.1 Inspect the package
1. Check that quantity, descriptions and product codes match the order.
2. Check the packaging for any damage or missing components.
3. In case of immediately detectable damage or missing parts:
- accept the goods with reserve, indicating any findings on the transport document, or
- reject the goods, indicating the reason on the transport document.
In both cases, promptly contact Xylem or the Authorised Distributor from whom the product was
purchased.
2.2.2 Unpacking and inspection of the unit
CAUTION: Cut and abrasion hazard
Always wear personal protective equipment.
1. Remove packing materials from the product. Dispose of all packing materials in accordance
with local regulations.
2. Check the unit for integrity and to make sure that there are no missing components.
3. In case of damage or missing components, promptly contact Xylem or the Authorised
Distributor.
Content of the package
•Pump unit
•Thermal insulating shell
(for models 15-_/65B, 15-_/110MB and 15-_/110LB only)
•Check valve – G1/2
(for models 15-_/65B only)
•Sealing ring for foreign pump housings – Ø61/Ø54x3.55 mm
(for models 15-_/65B, 15-_/110MB and 15-_/110LB only)
•Sealing ring for foreign pump housings – Ø60.8/Ø54x5 mm
(for models 00-_/000 only)
•Spacer ring for foreign pump housings – Ø54/Ø52x2 mm
(for models 00-_/000 only)
•Safety Instructions and Quick Startup Guide

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8 ecocirc PRO – Installation, Operation and Maintenance Manual
2.3 Unit handling
DANGER: Electrical hazard
Holding the unit by the
supply cord is strictly forbidden.
WARNING:
During handling, make sure to avoid injury to people and animals,
and/or damage to property.
2.4 Storage
Storage of the packed unit
The unit must be stored:
•In a covered and dry place
•Away from heat sources
•Protected from dirt
•Protected from vibrations
•At an ambient temperature between -40 °C and 85 °C (-40 °F and 185 °F), and relative
humidity between 5 % and 95 %.
NOTICE:
Do not place heavy loads on top of the unit.
NOTICE:
Protect the unit from collisions.

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3Technical Description
3.1 Designation
Domestic hot water circulation pump for drinking water only (EU Regulation No. 622/2012).
OEM applications
For special OEM applications the pump has customized versions, which differ from the standard
versions in one or more features of the followings:
•Special software functions
•Customized power supply cable (special connectors or terminals)
•Alternative circulating fluid
3.2 Integrated features and functions
Identification based on part number:
60A
_ _
0
…
60A
_ _
1 … 60A
_ _
2 …
60A
_ _
3
…
60A
_ _
4 … 60A
_ _
5 …
60A
_ _
6 …
Fix speed
•
•
Variable speed
•
•
PWM control
•
Temperature control
•
•
Timer control
•
•
•
Standby mode
•
○*
•
○*
Air purge function
•
○*
•
○*
Error code flashing LED light
•
○*
•
○*
Dry run protection
○**
○**
Power Down Reset
○**
○**
*The function is available only in models with potentiometer knob
** The function is available only in special OEM models
Identification based on model description:
15-
_
/ 65B 15-
_
/ 65S
15
-
_
/ 110MB 15-
_
/ 110LB 00-
_
/ 000
Brass pump housing
•
•
•
Stainless steel pump housing
•
No pump housing (replacement part)
•
Integrated shut-off valve
•
•
Integrated check valve
•
•
Internal G1/2 thread connections
•
•
•
•
External G3/4 thread connections
•
External G1 1/4 thread connections
•

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10 ecocirc PRO – Installation, Operation and Maintenance Manual
3.3 Data plate
Figure 1
No.
Description
No.
Description
1 Serial number incl. manufacturing date 6 Model description
2 Input power 7 Part number
3 Ingress protection class 8 Operational temperature class
4 Rated voltage 9 Nominal system pressure
5 Frequency 10 Technical code
3.4 Model description
Figure 2
No.
Description
Notes
1 Series name ecocirc PRO
2 Nominal diameter of
connections
15 = DN15
00 = drive unit (delivered without pump housing)
3 Maximum head 1 = 1 m
3 = 3 m
4 Pump housing port-to-port
distance and connection
threads
65 = 65 mm (with G1/2 connections)
110M = 110 mm (with G3/4 connections)
110L = 110 mm (with G1 1/4 connections)
000 = drive unit (delivered without pump housing)
5 Pump housing material B = brass
S = stainless steel
P = plastic
6 Temperature sensor Empty = without temperature sensor
R = with temperature sensor
7 Timer control Empty = without timer
U = with built-in timer

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3.5 Names of the main components and accessories
Figure 3
No.
Description
No.
Description
1 End cap 11 Timer
2 Potentiometer knob 12 Rotor with closed impeller
3 Stator (pump motor) 13 Pump housing G3/4 (code: 110MB)
4 Cable gland 14 Check valve with G1/2 threads
5 Union nut 15 Sealing ring –Ø61/Ø54x3.55 mm
6 Ceramic bearing ball 16 Sealing ring –Ø60.8/Ø54x5 mm
7 O-ring 17 Spacer ring –Ø54/Ø52x2 mm
8 Rotor with open impeller 18 Integrated ball shut-off valve
9 Pump housing G1/2 (code: 65B) 19 Integrated check valve
10 Thermal insulation shell 20 Pump housing G1 1/4 (code: 110LB)

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12 ecocirc PRO – Installation, Operation and Maintenance Manual
3.6 Intended use
Circulation pump for domestic hot water systems.
If hot water is not used for longer periods of time, the water in the hot water pipe cools off.
Domestic hot water pumps (also called sanitary or drinking water circulation pumps) pump this
cold water back into the water heater via a separate circulation pipe (see Figure 4 on page 15).
At the same time fresh hot water is flowing out of the water heater and provides a constant
supply of hot water at the tap.
The ecocirc PRO series drinking water circulation pumps are suitable for single- and two-family
homes with a circulation pipe length of approx. 50 m.
Pumped liquids
NOTICE:
This circulator is suitable for drinking water only – EU Regulation No. 622/2012
For use with alternative circulating fluids (e.g. in special OEM applications) contact Xylem or the
Authorised Distributor.
The liquids must be:
•Clean
•Free of solid – especially metallic - particles or fibres
•Free of mineral oils
•Chemically and mechanically non aggressive
•Non-flammable
•Non-explosive
Observe the operating limits in Technical Information on page 29.
WARNING:
It is
prohibited to pump drinking water after use with other fluids.
WARNING:
Take appropriate measures during transport, installation and storage to
prevent contamina
tion
from external substances
.
WARNING:
Remove the unit from
its packaging just before installation to prevent contamina
tion from
external substances
.
WARNING:
After installation, run the unit for
a few minutes with several utilities open in order
to wash the
inside of the
system.

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ecocirc PRO – Installation, Operation and Maintenance Manual 13
3.7 Improper use
WARNING:
The unit was designed and built for the use described in the Intended Use
section on page
12.
Any other uses are prohibited, as they could compromise the safety of the user and the efficiency
of the unit itself.
DANGER:
It is prohibited to use this uni
t to pump flammable and/or explosive liquids.
DANGER: Potentially explosive atmosphere hazard
It is prohibited to start the unit in environments with potentially explosive atmospheres or with
combustible dusts
.
DANGER:
In
domestic hot water systems, the water is recommended to be pumped
at a temperature
above 50 °C (
122 °F) to prevent the risk of legionella.
DANGER:
I
n domestic hot water systems, flexible pipes must not be used to connect the unit to the
mains
water sup
ply.
CAUTION:
It is
prohibited to use the unit to pump aggressive liquids, acids and seawater.
Examples of improper use
•Pumping liquids not compatible with the construction materials of the unit.
•Pumping liquids with temperatures higher than what shown in Technical Information on page 29.
•Pumping hazardous, toxic, explosive, flammable or corrosive liquids.
•Pumping seawater.

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14 ecocirc PRO – Installation, Operation and Maintenance Manual
4Installation
4.1 Precautions
Before starting, make sure that the safety instructions shown in Introduction and Safety on page
4have been fully read and understood.
DANGER: Potentially explosive atmosphere hazard
It is prohibited to start the unit in environments with potentially explosive atmospheres or with
combustible dusts
.
WARNING:
Always wear personal protective equipment.
WARNING:
Always use suitable working tools.
WARNING:
When selecting the place of installation and connecting the unit to the hydraulic and electric
power supplies, strictly comply with current regulations.
WARNING:
It is
prohibited to pump drinking water after use with other fluids.
WARNING:
Remove the unit from
its packaging just before installation to prevent contamina
tion from
external substances
.
4.2 Installation area
•Only install in dry rooms where the pump and the piping is protected from freezing.
•Install in one of the permitted mounting positions (see Figure 5on page 16).
•Observe the instructions given in the Operating environment section on page 29.
4.3 Hydraulic connection
DANGER:
All the hydraulic and electrical connections must be completed by a technician possessing the
technical
-professional requirements outlined in the current regulations.
WARNING:
Piping must be sized to ensure safety at the maximum operating pressure.
WARNING:
Install appropriate seals between the unit couplings and the piping
system.

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ecocirc PRO – Installation, Operation and Maintenance Manual 15
4.3.1 Guidelines for the hydraulic system
•If possible, install the unit at the lowest point of the system.
•Support the pipes independently so that their weight does not load the unit.
•Remove any welding residues, deposits and impurities in the pipes that could damage the
unit.
•Check that other units do not come in contact with the unit.
•When using pump models with pump housing code 65B (item 9in Figure 3), use the G1/2
check valve (item 14 in Figure 3) supplied in the packaging. This prevents water from flowing
through the pump backwards when any faucet is opened, thus causing damage.
•When using a check valve other than the factory supplied one, pay attention to the
appropriate closing pressure.
•Install the check valve after the pump in the direction of flow, so that the arrows on the pump
housing and on the check valve point in the same direction.
•We recommend that for pump models with pump housing code 65B, you install a ball shut-
off valve before the pump at least, for future maintenance or repair works.
•Pumps with pump housings code 110MB (item 13 in Figure 3) and code 110LB (item 20 in
Figure 3) already contain an integrated check valve (item 19 in Figure 3) and a ball shut-off
valve (item 18 in Figure 3) in the pump housings. (The check valve opens and closes
automatically; the ball shut-off valve is closed when its handle is perpendicular to the pipe
direction).
•With the shut-off valve closed at the suction side of the pump and with the check valve
installed at the discharge side, the union nut (item 5in Figure 3) can be loosen, thus the
pump motor can be turned in proper position, or even removed for maintenance without
completely draining the system.
•To be able to exclude the complete unit from the system, e.g. for replacement of the pump
housing without draining the system, install additional shut-off valves both at the suction and
at discharge side of the pump.
The next figure shows a typical installation:
Figure 4
No.
Description
No.
Description
1 Water heater 5 Hot water return line
2 Check valve 6 Hot water supply line
3 Circulation pump 7 Cold water supply line
4 Ball shut-off valve

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16 ecocirc PRO – Installation, Operation and Maintenance Manual
4.3.2 Installation
WARNING: Danger, system pressurized
Before starting work, close the shut
-off valves on the suction and discharge sides or drain
the
system.
Installation Sequence
1. Identify the arrow, cast on the pump housing to define the flow direction of the liquid.
2. Insert the unit between the pipes, in one of the permitted mounting positions, using the
proper gaskets or thread seal.
3. Tighten the connections.
Permitted positions
Figure
5
4.3.3 Rotation of the pump motor
WARNING: Danger, system pressurized
Before starting work, close the shut
-
off valves on the suction and discharge sides or drain the
system.
ATTENTION:
During the
loosening of the union nut from the pump housing, it is
possible the leakage of
residual
very hot or cold liquid: pay attention to the risk of damages to persons.
ATTENTION:
Be careful not to damage the internal seal: risk of leakage of very hot or cold liquid during the
operation of the unit.
When installing pumps with a potentiometer knob and/or a timer in a vertical position, the pump
motor may be turned in 360° stepless, so that the knob and/or the timer may be positioned in a
well visible orientation (see Figure 6 on page 17).
1. Loosen the union nut before installation.
2. Rotate the pump motor to the required installation position.
3. Tighten the union nut.
When installing the pump in a horizontal position, the timer shall point upwards. It may be turned
in the range from 10:30 to 13:30 (±45°) at maximum, in order to maintain protection class IP 42
(see Figure 7 on page 17).

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ecocirc PRO – Installation, Operation and Maintenance Manual 17
Rotating the pump motor (vertical installation)
Figure 6
Rotating the pump motor (horizontal installation)
Figure 7

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18 ecocirc PRO – Installation, Operation and Maintenance Manual
4.3.4 Insulation
To save energy, insulate the pump housing with the matching thermal insulation shell (item 10
in Figure 3) included in the package (see Figure 8).
Figure 8
4.4 Electrical connection
DANGER:
All the hydraulic and electrical connections must be completed by a technician possessing the
technical
-professional requirements outlined in the current regulations.
DANGER: Electrical hazard
Before starting work, check that the unit is unplugged and that the pump unit cannot restart,
even unintentionally.
4.4.1 Ground
DANGER: Electrical hazard
Always connect the external protection conductor (ground) to the ground terminal before
attempting to make any other electrical connections.
DANGER: Electrical hazard
Connect the pump
unit
and any electric accessories to a socket with protection conductor
(ground).
DANGER: Electrical hazard
Check that the external protection conductor (ground) is longer than the phase conductors;
In
case of accidental disconnection of the unit from the phase conductors, the protection
conductor must be the last one to detach itself from the terminal.
DANGER: Electrical hazard
Install suitable systems for protection against indirect contact, in order to prevent lethal electric
shocks.

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4.4.2 Guidelines for electrical connection
•Check that the mains voltage and frequency match the specifications on the data plate.
•Protect the supply cord from high temperatures, vibrations, collisions and abrasions.
•Check that the power supply line is provided with a short circuit protection device of
appropriate size.
•If the pump unit is supplied with a power cord with grounding-type attachment plug, connect
it only to a properly grounded, grounding-type receptacle.
•Do not use an extension cord.
•If the pump unit is supplied without a power cord, use only a <HAR> and/or <VDE>
approved, ordinary duty, PVC insulated and sheathed, flexible power cable with copper
conductors, type H05V2V2-F, with a cross section of 3G0.75 and with a minimum sheath
diameter of 6.7 mm. Follow the following connection steps.
Power cord connection
1. Prepare the power cord:
•
Strip the wires according to the next
dimensions.
•Coat the stripped
copper cores with
lead free solder
or apply end splices of
a proper size.
2. Unscrew the cable gland
components
from the motor housing.
3.
Install the cable gland components
onto the prepared cable.
Take care of the proper order and
orientation.
4. Remove the screw
that holds the end
cap to the motor housing, and remove
the end cap.

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20 ecocirc PRO – Installation, Operation and Maintenance Manual
5. Cable installation:
•
Insert the cable through the threaded
hole into the motor housing.
•
Push the lever of the terminal block
with a flat screw driver and get each
stripped core into the proper hole.
•Take care of matching the markings
of
the terminal block with the
proper
cable colours.
•
The whole stripped conductor length
must be inside of the terminal block.
•
Insert the cable gland components
into the housing and tighten the nut.
6. Final assembly:
•
Put the end cap back to the motor
housing.
•
Take care of its orientation, only one
angular position is correct.
•Tighten the screw with 0.6 Nm.
DANGER: Electrical hazard
Before the electrical connection is energized, the electrical compartment must be closed.
DANGER: Electrical hazard
P
umps, that do not equipped with standard power supply plug
, may only be connected to the
electrical system in a separate
protective box. For identification, check the 8th
character of the
technical code
(counting after the prefix “E5-“) of the product (see Item
10
on
Figure 1
)
, codes
C, S, and X are affected.
NOTICE:
Before the electrical connection is energized, the pump unit must be filled with water; if not, the
bearings will be destroyed by dry operation.
4.4.3 Guidelines for timer connection
1. Follow the steps
1
. to
5
. of section
4.4.2.
2. Connect the 3-
pin connector of the
timer into the proper opening of the
motor housing.
3. Final assembly:
•Put the timer to the motor housing.
•
Take care of its orientation, only one
angular position is correct.
•Tighten the screw with 0.6 Nm.