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ETA Heiztechnik Gewerbepark 1 A-4716 Hofkirchen an der Trattnach Tel: +43 (0) 7734 / 22 88 -0 Fax: +43 (0) 7734 / 22 88 -22 info@eta.co.at www.eta.co.at...
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Commissioned by (company): _________________________________________ _________________________________________ _________________________________________ 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.
So you can maintain a long-term overview of maintenance carried out. course, the maintenance can also be carried out using the service Fig. 2-2: Maintenance step (example) guide, without the support of the ETAtouch control system. www.eta.co.at...
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Cleaning and maintenance Maintenance notes Follow the on-screen instructions and carry out all The maintenance switch is marked with the steps carefully. Enter your name at the end of symbol and has two settings. maintenance ( button) and save the maintenance •...
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No leaks in the components, e.g. screw connection or maintenance cover. Clean panels If necessary, clean the panels of the boiler and the ETAtouch screen with a moist cloth. Under circumstances aggressive solvents, chemicals or scouring agents. They can lead to stress cracks and damage. www.eta.co.at...
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Cleaning and maintenance Maintenance notes...
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Pellets vacuum turbine Fill level sensor for pellet hopper Combustion chamber door Firebed switch (safety switch) Vacuum sensor Firebed level sensor Actuator for primary air Grate drive Ash screw 10 Grate position switch 11 Connection for measuring underpressure www.eta.co.at...
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Cleaning and maintenance Maintenance openings in the boiler Actuator for secondary air Drive chain of the dosing screw Position sensor for stoker screw Drive chain of the stoker screw Ignition Retaining tube of the lambda probe Heat exchanger cleaner maintenance cover Safety switch for the maintenance cover De-ashing drive 10 Flue gas temperature sensor in heat exchanger...
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Maintenance openings in the boiler Cleaning and maintenance Actuator of flue gas recirculation Precipitator maintenance cover Heat exchanger cover Release button for safety temperature limiter (STB) Mains switch (symbol Maintenance switch (symbol Door contact switch www.eta.co.at...
Cleaning and maintenance Maintenance table Maintenance table Clean the boiler at least once a year or when requested by the control system. Maintenance is necessary at least every 3 years or when requested by the control system. We recommend you perform maintenance annually.
Check the stoker drive chains • Check the clearance/gap of the position sensor for the Specialist stoker screw • Clean the fill level sensor • Clean the strainer Calibrate the lambda probe Specialist Reset the maintenance counter Specialist Perform a heating test Specialist www.eta.co.at...
Cleaning and maintenance Regular maintenance Regular maintenance Open the lock for the lid and empty the ash box. 2.4.1 Preparation Stop heating Stop the heating mode of the boiler with the on / off switch in the overview of the boiler. The boiler emits a glowing charge and then switches to operating mode [Switched off].
(e.g. treated water). 2.4.4 Establish operational readiness Switching on the boiler Switch the boiler back on using the on / off switch . www.eta.co.at...
Cleaning and maintenance Cleaning (customer) Cleaning (customer) 2.5.2 Check safety devices 2.5.1 Preparation Check safety valves Check all safety valves of the heating system by means of a visual inspection. The outlets of the safety Stop heating valves must not drip. Stop the heating mode of the boiler with the on / off switch in the overview of the boiler.
Therefore, only carry out the check on weekdays, never on weekends in the cold winter, because there is probably no heating technician available if the seal is defective. Fig. 2-14: Condensate drain www.eta.co.at...
Cleaning and maintenance Cleaning (customer) 2.5.4 Cleaning the combustion chamber Using the poker, stoke all the ash out of the primary combustion chamber into the secondary combustion chamber. Cleaning the inside of the combustion chamber Open the combustion chamber door and use the poker to scrape off the ash from the inner surfaces of the combustion chamber.
Remove the cover from the front of the boiler. Cleaning the secondary air openings Clean the opening for the secondary air (above the tilting grate) with an ash vacuum, for example. Fig. 2-22: Cover Fig. 2-20: Secondary air openings www.eta.co.at...
Cleaning and maintenance Cleaning (customer) Checking the firebed lever and firebed switch Replacing the combustion chamber cover Check the movement of the firebed lever in the Re-install the two-part combustion chamber cover combustion chamber by repeated lifting. again and ensure that it is centred. Fig.
Clean the sealing area for the air valve on the inside of the flue duct. Fig. 2-28: Actuator of flue gas recirculation For manual actuation, push the unlocking device (red button) and turn the drive 90° with the locking screw. Fig. 2-32: Sealing area Fig. 2-29: Manually actuating the actuator www.eta.co.at...
Cleaning and maintenance Cleaning (customer) Removing the maintenance cover CAUTION! Remove the insulation above the maintenance cover. Do not lubricate the washer and sealing area Never lubricate the sealing area in the flue duct or the washer on the air valve with oil, grease or other lubricants.
Remove the ash from the flue gas duct with the clean- Checking the seal on the maintenance cover ing brush and an ash vacuum. Check if the seal on the maintenance cover is intact and replace if necessary. Fig. 2-40: Flue gas duct Fig. 2-43: Seal www.eta.co.at...
Cleaning and maintenance Cleaning (customer) 2.5.6 Clean precipitator (optional) CAUTION! Do not operate with damaged seals Removing the maintenance cover Never operate the boiler with damaged seals. Remove the insulation above the maintenance cover. Otherwise, unwanted air is sucked in, disturbing the combustion process and causing increased wear.
Use an ash vacuum to vacuum out the opening for the small holes can be "felt", there is damage. In this case, flushing air from the electrode at the isolator. contact ETA Customer Support. Check the alignment of the electrodes The electrode must be in the centre of the precipitator, so that the flue gas can be optimally cleaned.
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Cleaning and maintenance Cleaning (customer) Place the insulation back onto the maintenance cover. Checking the seal on the maintenance cover Check if the seal on the maintenance cover is intact and replace if necessary. Fig. 2-54: Insulation Fig. 2-52: Seal CAUTION! Do not operate with damaged seals Never operate the boiler with damaged seals.
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Switch the boiler on via the mains switch and start ash removal Switch the boiler back on at the mains switch. Press the [De-ash] button for the boiler to start the de- ashing process. Switch the boiler back on using the on / off switch www.eta.co.at...
Cleaning and maintenance Maintenance (expert) Maintenance (expert) 2.6.2 Clean draught fan 2.6.1 Preparation Cleaning the draught fan Unplug the draught fan's power supply. Loosen the nuts and remove the draught fan. Before this maintenance, perform all steps for the preceding maintenance intervals Before this maintenance, all steps for the preceding maintenance...
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Remove the cover from the top of the boiler. Fig. 2-59: Cover Removing the heat exchanger cover Remove the insulation laid over the heat exchanger cover. Fig. 2-60: Insulation Loosen the nuts and remove the heat exchanger cover. Fig. 2-61: Heat exchanger cover www.eta.co.at...
Cleaning and maintenance Maintenance (expert) Cleaning the heat exchanger Checking the seal on heat exchanger cover Strip off the ashes on the inner walls with the poker and Check if the seal on the heat exchanger cover is intact remove the fly ash with an ash vacuum, for example. and replace if necessary.
Removing the cover on the ash duct Remove the cover on the front of the ash duct. Fig. 2-69: Cover Clean the area behind the primary air valve Remove the primary air valve and the housing. Fig. 2-70: Primary air valve www.eta.co.at...
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Cleaning and maintenance Maintenance (expert) Use an ash vacuum to remove the ash from the area Checking the air valve for primary and secondary behind it. Actuate the actuator for the primary air manually and check that it moves smoothly. Fig.
Fig. 2-77: Cover Fig. 2-78: Cover Cleaning the silicon hoses for the vacuum sensor Take the silicone hose off the vacuum sensor. Fig. 2-79: Vacuum sensor Clean the silicon hose by carefully blowing out. Fig. 2-80: Blowing out the silicone hose www.eta.co.at...
Cleaning and maintenance Maintenance (expert) If resistance is noticeable when blowing out, Reconnecting the silicone hose remove the cover on the front side (see the Reconnect the silicon hose to the vacuum actuator. following diagram) and clean the connection for the Ensure the correct position when connecting.
Never lubricate the de-ashing system and the push floor with oil, grease or other lubricants. The reason for this is because ash will adhere to the lubricant and cause encrustation and sluggishness. Fig. 2-87: Flue gas temperature sensor in heat exchanger www.eta.co.at...
Cleaning and maintenance Maintenance (expert) 2.6.9 Clean lambda probe Mount the heat exchanger cleaner maintenance cover. Replace the maintenance cover of the heat exchanger Cleaning the lambda probe cleaner. Tighten the screws alternately and evenly. Only vacuum the head of the lambda probe with an ash vacuum.
Fig. 2-92: Cover Fig. 2-94: Seal Also check if the sealing cord is already "hard". To check, press on the sealing cord with your finger nail. If it can no longer be pressed, it is "hard" already and must be replaced. www.eta.co.at...
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Cleaning and maintenance Maintenance (expert) Adjustment requires the removal of the combustion Retighten the flange nuts. Suspend the door and chamber door. To do this, lift the combustion chamber check whether it now closes fully. If not, repeat the door slightly when it is open, unhook it and carefully process.
Re-install the cover back onto the pellet hopper. Fig. 2-97: Cover Checking the stoker drive chains Check the chain tension, see the following graphic. Tension the chain by shifting the motor. Lubricate the drive chains with chain spray. Fig. 2-100: Cover Fig. 2-98: Stoker drive chains www.eta.co.at...
Cleaning and maintenance Maintenance (expert) Remove the filling level sensor mounting panel. Remove the cover on the top Carefully remove the cover from the top. Fig. 2-103: Mounting panel for fill level sensor Check the seal on the bottom of the mounting panel and replace if necessary.
Altogether, these steps last approxi- mately 1.5 to 2 hours. When the calibration is complete, the boiler goes back into operation and starts heating, if necessary. After another 100 hours of operation, the control system automatically performs another calibra- tion. Fig. 2-107: Cover www.eta.co.at...
Cleaning and maintenance Maintenance (expert) 2.6.14 Establish operational readiness After the heating test, switch the boiler back to normal mode. To do this, press the [Deactivate measurement] button in the settings window. Reset maintenance counter When maintenance is complete, reset the counter. With the [Service] access level, it will be visible in the boiler text menu under: Counters...
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