eta EEP 250 User manual

2019-04-05
EN
0000000368
V.006
X.45.0
01
93532-004
Precipitator
EEP 250 - 500
Service Manual

ETA Heiztechnik
Gewerbepark 1
A-4716 Hofkirchen an der Trattnach
Tel: [phone] / 22 88 -0
Fax: [phone] / 22 88 -22
[email protected]
www.eta.co.at

General information
3
1 General information
Support for cleaning and maintenance
This document provides support for cleaning and
maintaining the product. The required steps are listed
in detail here.
Take note of the date of the cleaning or maintenance
and any faults that may have occurred. This facilitates
troubleshooting for the expert (system operator,
heating technician...).
For services (such as commissioning, mainte-
nance, fault fixing) provided by ETA customer
service, the service reports are provided in digital form.
For clarity, you should staple these reports to this
document or enclose them.
Commissioning data
Enter the manufacturing number of the product
(printed on the type plate), the date of commissioning
as well as the heating technician who commissioned
the system.
Software Description
The software version described in this documentation
corresponds to the version valid at the time of publica-
tion. The software version installed on your product
may differ from that described in this documentation.
A software update to a more recent version can
always be performed. With the appropriate au-
thorisation, the required files can be found at
"www.eta.co.at".
Copyright
All contents of this document are property of ETA
Heiztechnik GmbH and are protected by copyright.
Any reproduction, transfer to third parties or use for
other purposes is prohibited without written permission
from the owner.
Subject to technical changes
We reserve the right to make technical modifications
without notice. Printing and typesetting errors or
changes of any kind made in the interim are not cause
for claims. Individual configurations depicted or
described here are only available optionally. In the
event of contradictions between individual documents
regarding delivery scope, the information in our current
price list applies.
Explanation of symbols
Instructions and information
Layout of safety instructions
SIGNAL WORD!
Type and source of danger
Possible effects
• Measures for avoiding the danger
Types of safety instruction
CAUTION!
On non-compliance with this safety instruction, there is
a risk of material damage.
WARNING!
On non-compliance with this safety instruction, there is
a risk of physical injury.
DANGER!
On non-compliance with this safety instruction, there is
a risk of major physical injury.
Commissioning data
Manufacturing number:
________________________________________
Commissioned on:
_________________________________________
Commissioned by (company):
_________________________________________
_________________________________________
_________________________________________

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Maintenance notes Cleaning and maintenance
2 Cleaning and maintenance
2.1 Maintenance notes
Performing regular cleaning and maintenance
To ensure satisfactory functionality, cleaning and
maintenance must be performed at regular intervals.
You will receive a timely reminder about this from the
ETAtouch control system.
Clean the boiler at least once per year or when
requested by the control system. Maintenance is
required at least every 2 years or when requested by
the control system. We recommend you perform
maintenance annually. You can also enter into a
service agreement for your heating system. Find out
more from your heating contractor or customer
service.
All tasks where the maintenance table reads
"Customer" or "Customer or expert" in the column
"To be carried out by" can be carried out by any trained
adult. Instruction may be provided by the heating
technician or our customer service.
Steps marked "Expert" may be performed by heating
technician or our customer service only.
Operation only by trained personnel
The product may be operated by trained adults only.
Training may be provided by the heating technician or
our customer service. Please read the associated doc-
umentation carefully in order to avoid errors during
operation and maintenance.
Persons who lack experience and knowledge as well
as children may not operate, clean, or maintain the
product.
Clean and maintain the precipitator together with
the boiler
The intervals for cleaning and maintaining the precipi-
tator correspond to those for the boiler. Therefore,
clean and upkeep the precipitator in the course of
cleaning and upkeeping the boiler.
Clean the precipitator before the emission
measurement
We recommend cleaning the precipitator and emptying
the ash bins before an emission measurement is
made.
Explanation of pictograms
Switch the boiler on/off with the mains
switch.
Perform a visual check of the components.
Clean the components with a soft cloth, for
example.
Remove deposits with a vacuum cleaner or
an ash vacuum.
Remove deposits with the poker.
Remove deposits with the cleaning brush.
Replace the wear parts (e.g., seals) with new
items.
Lubricate the components. The lubricant to
use is listed in the respective step.
Mount the components (e.g., screws or nuts)
by hand only, without tools.
Tighten the components (e.g., screws or
nuts) with a tool.
Install the components with some force (e.g.,
the retaining tube or the Lambda probe).
Handle the components carefully, since they
break very easily.
Measure or check dimensions or clearances
on the components.
Mark the components so that the correct
position can be found, for example, when
mounting.
Wear a protective mask to avoid injuries to
the airways.
Seal the components. The sealant to use is
listed in the respective step.
Use adhesive to affix the seals, for example.
Only blow out the components with your
mouth.

Cleaning and maintenance Maintenance notes
5
Technical illustrations
The technical illustrations show the cleaning and
maintenance of the EEP 333-500 precipitator; these
steps are also valid for the EEP 250 precipitator.
Affix a seal. The required cross-section and
sealing material are given at each step.
Do not use compressed air to clean the
components.
Do not use cleaning brushes to clean the
components.
Do not use an ash vacuum or vacuum
cleaner.
Do not lubricate the components.
No water or moisture in this area.
No leaks in the components, for example,
screw connection or maintenance cover.

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Maintenance openings Cleaning and maintenance
2.2 Maintenance openings
Maintenance openings and components
1 Drive and position switch for the flaps in the bypass
2 Maintenance covers for the flaps in the bypass.
3 Maintenance cover for the precipitator
4 Drive and position switch for the electrode
dedusting
5 Flushing air fan
6 Drive and position switch for the sliding rake

Cleaning and maintenance Maintenance table
7
2.3 Maintenance table
Cleaning must be carried out at least once a year or when requested by the control system. Maintenance is
necessary at least every 2 years or when requested by the control system. We recommend you perform
maintenance annually.
Tasks Regular
ly
Cleaning
annually
Maintenan
ce
at least
every 2
years
to be
performed by
Emptying ash bin
• Emptying ash bin
• Check the seals
X X X Customer
Clean the piping
• Clean the piping between the boiler, precipitator and
chimney
X X Customer or
specialist
Clean the precipitator
• Check and remove ash accumulations
• Clean the flushing air opening
• Clean and inspect the electrode holder
• Check the alignment of the electrodes
• Check maintenance cover seal
X X Customer or
specialist
Check flaps
• Check the drive chain of the flaps
• Check the positions of the flaps and position switch
• Check the seals on the flaps
XSpecialist
Check the electrode cleaning
• Check the drive chains and position switches of the
electrode dedusting
• Check idle position of the electrode dedusting
• Checking the ease of movement of the striking
mechanisms
XSpecialist
Check de-ashing
• Check the drive chains and position switches of the
electrode dedusting
• Check the drive chains and the position switches of both
sliding rakes
XSpecialist
Clean flushing air fan XSpecialist
Check the safety switch for the maintenance cover XSpecialist
Check the safety switch for the ash bin XSpecialist

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Regular maintenance Cleaning and maintenance
2.4 Regular maintenance
2.4.1 Empty ash bin
The ash bin can be emptied during operation
The ash bin (or ash container, respectively) of the pre-
cipitator may be removed and emptied during
operation. When the ash bin is removed, the inlet and
outlet flaps in the bypass are closed and the flue gas is
directed to the chimney via the bypass. The flaps open
again when the ash bin is reconnected.
Therefore, the boiler does not need to be
switched off to empty the ash bin. However,
prolonged operation of the precipitator without the ash
bin is not permitted, since the precipitator is operated
at overpressure.
The ash in the precipitator seals the duct with the ash
screw. However, if there is not enough ash in the pre-
cipitator and the flaps in the bypass do not close
properly, flue gas could escape from the boiler into the
room where the precipitator is installed.
DANGER!
Flue gas outlet without ash bin
During prolonged operation without an ash bin or ash
container, the flue gas from the boiler can reach
the room where the precipitator is installed.
Operation is only permitted with an ash bin or ash
container. Briefly remove the ash bin for emptying.
Technical illustration
The following steps depict the ash bin with a capacity
of 320 litres. The steps are essentially the same for all
other available ash bins (e.g.: 240 -litre).
Empty the ash bin
Open the screw cap on the connection unit and hang it
in the parking position.
Fig. 2-1: Connection unit
If necessary, the opening can be temporarily closed by
a lid.
Fig. 2-2: Sealing cover
To empty, the ash bin can be lifted from its upper side,
for example, using a forklift.

Cleaning and maintenance Regular maintenance
9
Actuate the locking lever so the bottom folds out. Do
not let the bottom strike anything or become bent, so
that the seal on the bottom fits evenly.
Fig. 2-3: Actuating the locking lever
After emptying, clean the bottom seal and sealing
surface in the boiler. Inspect the seal to ensure it is in
good order; replace it if necessary.
Fig. 2-4: Seal and sealing surface in the boiler
Then fasten the floor of the ash bin again with the
locking lever. Make sure the lever engages properly.
Unhook the connection unit, place it onto the ash bin
and lock it with the screw cap.
Fig. 2-5: Screw cap
Check the function of the posi-
tion switch for the ash bin. The switch must be
actuated when locking the screw cap.
Fig. 2-6: Position switch

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Cleaning (customer) Cleaning and maintenance
2.5 Cleaning (customer)
2.5.1 Preparation
End heating mode
End the boiler's heating mode with the On/Off switch in
the boiler overview window. The boiler performs an
ember burnout and then changes to the [Switched off]
operating mode. Then start de-ashing, so that the
boiler can perform a final de-ashing.
WARNING!
Switch off the electricity to the boiler via the mains
switch
Switch off the electricity to the boiler via the mains
switch. This prevents injuries caused by switching
the boiler on inadvertently.
2.5.2 Clean piping
Clean the piping between the boiler, precipitator
and chimney
Open the maintenance cover in the piping between the
boiler, precipitator and chimney
Fig. 2-7: Maintenance cover
Clean out the entire piping with an ash vacuum only.
Do not brush the ash into the boiler or precipitator.
Fig. 2-8: Clean out piping
WARNING!
Never brush ash into the precipitator
Only clean out the piping with an ash vacuum.
Never sweep ash into the precipitator as this can
block the precipitator's exhaust path. As a result,
the boiler can no longer ignite and this can lead to
deflagrations.

Cleaning and maintenance Cleaning (customer)
11
Re-attach the maintenance cover to the piping.
Fig. 2-9: Maintenance cover
2.5.3 Clean precipitator
Remove maintenance cover and panels
Remove the panel next to the flue gas connections.
Fig. 2-10: Panel
Remove the panel from the top and remove the
insulating cover.
Fig. 2-11: Panels and insulating cover
Remove both maintenance covers.
Fig. 2-12: Maintenance cover

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Cleaning (customer) Cleaning and maintenance
Check and remove ash accumulations
Carefully remove both inlay sheets.
Fig. 2-13: Inlay sheets
Inspect the inner walls of the precipitator for ash accu-
mulations. Cleaning is not functioning correctly if there
is too much ash on the inner walls or on the electrodes.
The cause must be found and eliminated.
Use the cleaning brush to carefully scrape the ash ac-
cumulations from the inner walls. Especially the area
above the sliding rakes.
Fig. 2-14: Clean the inner walls
Do not damage or bend the electrodes during
cleaning.
Fig. 2-15: Electrode
Clean the flushing air opening
Vacuum out the opening for the electrode flushing air
on the isolator on the inside of the precipitator.
Fig. 2-16: Flushing air opening on the isolator
Do not clean the opening with compressed air,
because this will stir up the ash, which can end up
in the precipitator control system and cause damage.

Cleaning and maintenance Cleaning (customer)
13
Clean and inspect the electrode holder
Clean the electrode holder with a soft cloth.
Fig. 2-17: Electrode holder
Then inspect the status of all electrode holders.
The best way to do this is to check the electrode
holder manually, especially the area around the
flushing air opening. If cracks or small holes can be
"felt" there is damage. In this case, contact ETA
Customer Support.
Check the alignment of the electrodes
The electrodes must be in the centre of the precipitator
so that the flue gas can be optimally cleaned.
Therefore, check the clearance from the electrodes to
the inner walls.
Fig. 2-18: Electrodes
If the clearance is uneven, check the electrodes.
They may have been bent during cleaning.
Reinserting the inlay sheets
Reinsert the inlay sheets in the precipitator.
Fig. 2-19: Inlay sheets
Check maintenance cover seal
Clean both maintenance covers. Inspect the seal on
the maintenance cover to ensure it is in good order and
replace if necessary.
Fig. 2-20: Maintenance cover
CAUTION!
Avoid operation with damaged seals
Never operate the precipitator with damaged seals.
Otherwise, leak air is sucked in, disturbing the
combustion process and causing increased wear.
Always replace seals immediately when they are
damaged.

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Cleaning (customer) Cleaning and maintenance
Re-attaching the maintenance cover and panels
Place both maintenance covers and tighten the screws
evenly and cross-wise.
Fig. 2-21: Maintenance cover
Finally, place the insulating cover and re-attach the
panels.
Fig. 2-22: Panels and insulating cover
Re-install the panel next to the flue gas connections.
Fig. 2-23: Panel
2.5.4 Establish operational readiness
Switch the boiler on via the mains switch and start
de-ashing
Restore the boiler's power supply from the mains
switch. Start de-ashing, so that the boiler can perform
de-ashing. Switch the boiler back on with the On/Off
switch.

Cleaning and maintenance Maintenance (expert)
15
2.6 Maintenance (expert)
2.6.1 Preparation
Before this maintenance, perform all steps for the
preceding maintenance intervals
Before this maintenance, all steps for the
preceding maintenance intervals must be
performed.
WARNING!
The following activities may only be performed by
qualified specialist personnel.
If you carry out these activities without the correspond-
ing specialist training, and above all without the
required experience, safe operation is no longer
guaranteed. The resulting defects and consequential
damage are excluded from the guarantee and
warranty.
Equally an incorrect performance of these activities
can lead to serious injuries.
End heating mode
End the boiler's heating mode with the On/Off switch in
the boiler overview window. The boiler performs an
ember burnout and then changes to the [Switched off]
operating mode. Then start de-ashing, so that the
boiler can perform a final de-ashing.
WARNING!
Switch off the electricity to the boiler via the mains
switch
Switch off the electricity to the boiler via the mains
switch. This prevents injuries caused by switching
the boiler on inadvertently.
DANGER!
Caution high voltage!
The electrode inside the precipitator can
still have residual voltage even after
switching off the power supply.
Therefore, switch off the boiler at the
mains switch and ensure that it cannot be switched
back on before starting work. Then establish
additional earthing between the electrode on the
inside and the housing of the precipitator.
2.6.2 Check flaps
Removing the panels
Remove the panel over the drive of the flaps.
Fig. 2-24: Panel
Check the drive chain of the flaps
Check the chain tension. The chain may sag by 1 -
2 cm without effort. The chain is tensioned by shifting
the motor. Lubricate the drive chain with chain spray.
Fig. 2-25: Drive chain of the flaps

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Maintenance (expert) Cleaning and maintenance
Check the positions of the flaps and position
switch
Screws that actuate the position switches are located
on the drive wheels of the flaps. When switched off, the
bypass is opened and the flaps in the inlet and outlet
opening are closed. Check the position of the flaps
based on the position of the drive wheels.
Fig. 2-26: Position of the flaps when switched off
When in operation, the bypass flap is closed and
the flaps in the inlet and outlet opening are open.
Fig. 2-27: Position of the flaps during operation
Check whether the position switches are actuated.
Fig. 2-28: Position switch
Check the seals on the flaps
Remove both maintenance covers from the bypass.
Fig. 2-29: Maintenance cover
Inspect the integrity of the seals on the flaps and
replace if necessary. If cracks or other flaws are
noticeable, they must be replaced.
Fig. 2-30: Check the seals on the flaps

Cleaning and maintenance Maintenance (expert)
17
Fig. 2-31: Seals
Inspect the seals on the maintenance covers to ensure
they are in good order and replace if necessary. Then
re-install the maintenance covers. Tighten the screws
evenly and cross-wise.
Fig. 2-32: Seal
Re-install both maintenance covers on the bypass.
Fig. 2-33: Maintenance cover
Installing the panels
Re-install the panel over the drive of the flaps.
Fig. 2-34: Panel

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Maintenance (expert) Cleaning and maintenance
2.6.3 Check the electrode cleaning
Remove maintenance cover and panels
Remove the panel next to the flue gas connections.
Fig. 2-35: Panel
Remove the panel from the top and remove the
insulating cover.
Fig. 2-36: Panels and insulating cover
Remove both maintenance covers.
Fig. 2-37: Maintenance cover
Removing the panels
Remove the panel over the electrode dedusting drive.
Fig. 2-38: Panel
Check the drive chains and position switches of
the electrode dedusting
Check the chain tension. The chain may sag by 1 -
2 cm without effort. The chain is tensioned by shifting
the motor. Lubricate the drive chain with chain spray.
Fig. 2-39: Electrode dedusting drive chain
Check whether the position switch is actuated.
Fig. 2-40: Position switch

Cleaning and maintenance Maintenance (expert)
19
Check idle position of the electrode dedusting
A screw is located on the electrode dedusting drive
wheel which actuates the position switch for the idle
position of the electrode dedusting.
Fig. 2-41: Idle position mark
Through the maintenance opening on the top,
check whether the striking mechanisms are
nearly horizonal in the idle position. If not, the delay
time (= parameter [Electrode dedusting switch] ->
[Switch-off lag]) must be adjusted in the control
system.
Fig. 2-42: Idle position of the striking mechanisms
Checking the ease of movement of the striking
mechanisms
Check the ease of movement of all striking
mechanisms. If there is resistance, remove the striking
mechanism, clean the hole and reinstall.
Fig. 2-43: Check the ease of movement
CAUTION!
Do not lubricate the striking mechanisms
Never lubricate the striking mechanisms
with oil, grease or other lubricants, since ash
adheres to the lubricant and will cause en-
crustation and sluggishness.
Installing the panels
Reattach the panels over the electrode dedusting
drive.
Fig. 2-44: Panel

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Maintenance (expert) Cleaning and maintenance
2.6.4 Check de-ashing
Removing the panels
Remove the panels on both sides from of the bottom of
the precipitator. The drives for the sliding rakes are
located behind these.
Fig. 2-45: Panel
Fig. 2-46: Panel
Check the drive chains and the position switches
of both sliding rakes
Perform these steps on both sides of the precipitator.
Check the chain tension. The chain may sag by 1 -
2 cm without effort. The chain is tensioned by shifting
the motor. Lubricate the drive chains with chain spray.
Fig. 2-47: Drive chain of the sliding rakes
Fig. 2-48: Drive chain of the sliding rakes
Check whether the position switches are actuated.
Fig. 2-49: Position switch