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eta HACK 350 Service Manual
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eta HACK 350 Service Manual

Moving-grate boiler, size 2
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2016-04-05
EN
0000000305
V.001
X.36.0
3503
93824-001
Moving-grate boiler
Size 2
Service guide

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Summary of Contents for eta HACK 350

  • Page 1 2016-04-05 0000000305 V.001 X.36.0 3503 93824-001 Moving-grate boiler Size 2 Service guide...
  • Page 2 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...

  • Page 3: General Information

    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.

  • Page 4: Cleaning And Maintenance

    10 Maintenance cover for secondary combustion zone Maintenance cover for flue gas recirculation piping Draught fan Heat exchanger cover Maintenance cover for reversing chamber on heat exchanger Combustion chamber door Maintenance cover for flue gas recirculation (behind panel) Ignition fan Actuator for primary air www.eta.co.at...
  • Page 5 Cleaning and maintenance Drive of heat exchanger cleaner Temperature sensor of combustion chamber Actuator for flue gas recirculation flap Maintenance cover for flue gas recirculation (behind panel) Boiler mains switch Maintenance cover for reversing chamber on heat exchanger...
  • Page 6 Cleaning and maintenance The conveyor depicted here is the standard con- figuration. Drop chute maintenance cover Rotary valve maintenance cover Safety switch for rotary valve maintenance cover Drop chute safety switch Fig. 2-1: Rotary valve position sensor www.eta.co.at...
  • Page 7 Cleaning and maintenance General information General information 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.

  • Page 8: Maintenance Table

    Check seal on heat exchanger cover Expert Check safety switch of the discharge Expert Check rotary valve stop Expert Check silicon hoses for differential pressure switch and Expert transmitter Check air valve Expert Check automatic closing of the actuators Expert www.eta.co.at...
  • Page 9 Cleaning and maintenance Maintenance table Every Every 6,000 h Regular 3,000 h Tasks to be done by or once every a year 2 years Check seal on combustion chamber door Expert Calibrate lambda probe Expert Perform heating test Expert Reset maintenance counter Expert...

  • Page 10: Regular Maintenance

    Fig. 2-3: Seal on the sealing plate risk.  The boiler may not be operated for more than 2 minutes without ash bins or an ash container. www.eta.co.at...
  • Page 11 Cleaning and maintenance Regular maintenance Check heating system's water pressure heating system's water pressure measured by the control system and displayed on the screen. A visual check is still necessary though. In buildings with up to three storeys, the optimum water pressure in a cold heating system is between 1 and 2 bar.
  • Page 12 Fig. 2-7: Maintenance cover Cleaning the flue pipe Sweep the flue pipe from the flue outlet to the chimney, and remove flue ash from the chimney using a vacuum cleaner. Sweep the ash into the chimney, not into the boiler. www.eta.co.at...
  • Page 13 Cleaning and maintenance Every 3000 hours / annually Using the poker, remove loose and baked on ash from Next, using the poker, remove baked on ash deposits the upper part of the combustion chamber. Sweep the from inside the combustion chamber and sweep onto ash backwards into the heat exchanger or forwards the moving grate.
  • Page 14 In the combustion chamber, check the position of the firebed switch actuating lever. Fig. 2-13: Openings in the lining Check lining of the combustion chamber After cleaning, check the combustion chamber lining for cracks or damage. Fig. 2-16: Firebed switch actuating lever www.eta.co.at...
  • Page 15 Cleaning and maintenance Every 3000 hours / annually Visual check of the stoker screw Clean the visible photocell with a soft cloth. Then reattach the ignition tube. Visually check the stoker screw for damage from the combustion chamber. It can be a bit burnt on the ends due to the high levels of heat.
  • Page 16  Never operate the boiler with defective seals. Clean roller guide of the moving grate Clean the 4 rollers as well as the guides of the moving grate and check for any possible foreign bodies. Fig. 2-22: Ash cross screw www.eta.co.at...
  • Page 17 Cleaning and maintenance Every 3000 hours / annually For better checking and cleaning, remove the Check the seals on both maintenance covers to panel as well as the maintenance cover on the ensure they are in good condition, replace if opposite side.
  • Page 18 Fig. 2-34: Knurled nut Next, turn each of the ball knobs by 180°. Fig. 2-32: Clean ducts Fig. 2-35: Ball knob Fig. 2-33: Clean ducts Check the seals of both maintenance covers to ensure they are in good condition, replace if necessary. www.eta.co.at...
  • Page 19 Cleaning and maintenance Every 3000 hours / annually Lift the two heat exchanger covers and open fully. When this is removed, the first tube of the heat exchanger is visible. Clean it with the poker. Sweep ash that has collected at the top down into the reversing chamber.
  • Page 20 Fig. 2-41: Flue gas temperature sensor Clean the sensor with a soft cloth and then re-install it. When fixing the temperature sensor in place, only tighten the screw hand-tight so as not to damage the sensor. www.eta.co.at...
  • Page 21 Cleaning and maintenance Every 3000 hours / annually Clean flue gas recirculation piping Manually actuate the flap actuator. Unlock the actuator on the red button and actuate manually with an Allen Take off the two maintenance covers of the piping and key.
  • Page 22 Remove the drive chain cover by loosening the acorn nuts. Check the tension of the stoker drive chain. The chain may sag by 1 - 2 cm without effort. Lubricate the spring, guide and bearing with heat- resistant lubricant. www.eta.co.at...
  • Page 23 Cleaning and maintenance Every 3000 hours / annually If it sags more, the chain must be tensioned with the On the external de-ashing with transfer coupling, two set screws on the side. check the flap for tightness. Fig. 2-49: Flap in transfer coupling Fig.
  • Page 24 If the safety valve drips, open it with a quarter turn of the red cap and rinse it out (danger of scalding). If the safety valve still cannot be sealed effectively after being rinsed several times, it must be cleaned by a technician or replaced. www.eta.co.at...
  • Page 25 Cleaning and maintenance Every 3000 hours / annually Checking the thermal discharge valves Perform a visual inspection of the two thermal discharge valves. The outlets of the thermal discharge valves must not drip. Check function of safety devices in fuel path Check the safety devices in the fuel path, such as the temperature-monitoring system,...
  • Page 26 These parts cool off more slowly, so they may still be hot.  Allow the boiler cool off long enough, or wear appropriate protective clothing. Fig. 2-57: Cover www.eta.co.at...
  • Page 27 Cleaning and maintenance Every 6,000 hours / 2 years Remove contamination in the upper area of the heat The draught fan weighs about 32 kg. Secure it exchanger. against falling down during removal and later re- installation. Fig. 2-58: Cleaning the area Fig.
  • Page 28 Drop chute safety switch It can be deliberately set to [No] if the used fuel requires it. The function can be seen with the [Service] Safety switch for rotary valve maintenance cover access level under: Conveying system Stoker unit RotValveStop www.eta.co.at...
  • Page 29 Cleaning and maintenance Every 6,000 hours / 2 years If the discharge screw and the stoker screw are in operation simultaneously and the function is set to [Yes], either the sensor is faulty or the gap between the screw in the gear and the sensor is too large and must be adjusted.
  • Page 30 They close the control flap drives or the primary air valve respectively in the event of a power failure. Carry out the following steps to check automatic closing. www.eta.co.at...
  • Page 31 Cleaning and maintenance Every 6,000 hours / 2 years Leaks can be detected by variations in the colouration Next, tighten the two rear nuts for fixing the eye bolts. of the sealing cord. If leaks are found, it usually suffices to adjust the hinges.
  • Page 32 If possible, perform a flue gas measurement during the heating test. After the heating test, switch the boiler back to normal mode. To do this, press the [Deactivate measurement] button in the settings window. www.eta.co.at...
  • Page 33 Cleaning and maintenance Every 6,000 hours / 2 years...
  • Page 34 Check stoker drive chain Check the seal of the ash bin or the transfer coupling Check heat exchanger ash screw Clean the lambda probe Visually check safety valves Visually check thermal relief valves Check operational readiness of safety devices in fuel path www.eta.co.at...
  • Page 35 Records Cleaning (customer) performed on: _________________________ performed by: _________________________ Comments:...
  • Page 36 Check the seal of the ash bin or the transfer coupling Check heat exchanger ash screw Clean the lambda probe Visually check safety valves Visually check thermal relief valves Check operational readiness of safety devices in fuel path Clean the upper area of the heat exchanger Clean draught fan www.eta.co.at...
  • Page 37 Records Maintenance (expert) Tasks Notes Check seal on heat exchanger cover Check safety switch of the discharge Check rotary valve stop Check silicon hoses for differential pressure switch and transmitter Check air valve Check automatic closing of the actuators Check seal on combustion chamber door Calibrate lambda probe Perform heating test Reset maintenance counter...
  • Page 38 Check stoker drive chain Check the seal of the ash bin or the transfer coupling Check heat exchanger ash screw Clean the lambda probe Visually check safety valves Visually check thermal relief valves Check operational readiness of safety devices in fuel path www.eta.co.at...
  • Page 39 Records Cleaning (customer) performed on: _________________________ performed by: _________________________ Comments:...
  • Page 40 Check the seal of the ash bin or the transfer coupling Check heat exchanger ash screw Clean the lambda probe Visually check safety valves Visually check thermal relief valves Check operational readiness of safety devices in fuel path Clean the upper area of the heat exchanger Clean draught fan www.eta.co.at...
  • Page 41 Records Maintenance (expert) Tasks Notes Check seal on heat exchanger cover Check safety switch of the discharge Check rotary valve stop Check silicon hoses for differential pressure switch and transmitter Check air valve Check automatic closing of the actuators Check seal on combustion chamber door Calibrate lambda probe Perform heating test Reset maintenance counter...
  • Page 42 Check stoker drive chain Check the seal of the ash bin or the transfer coupling Check heat exchanger ash screw Clean the lambda probe Visually check safety valves Visually check thermal relief valves Check operational readiness of safety devices in fuel path www.eta.co.at...
  • Page 43 Records Cleaning (customer) performed on: _________________________ performed by: _________________________ Comments:...
  • Page 44 Check the seal of the ash bin or the transfer coupling Check heat exchanger ash screw Clean the lambda probe Visually check safety valves Visually check thermal relief valves Check operational readiness of safety devices in fuel path Clean the upper area of the heat exchanger Clean draught fan www.eta.co.at...
  • Page 45 Records Maintenance (expert) Tasks Notes Check seal on heat exchanger cover Check safety switch of the discharge Check rotary valve stop Check silicon hoses for differential pressure switch and transmitter Check air valve Check automatic closing of the actuators Check seal on combustion chamber door Calibrate lambda probe Perform heating test Reset maintenance counter...
  • Page 46 Check stoker drive chain Check the seal of the ash bin or the transfer coupling Check heat exchanger ash screw Clean the lambda probe Visually check safety valves Visually check thermal relief valves Check operational readiness of safety devices in fuel path www.eta.co.at...
  • Page 47 Records Cleaning (customer) performed on: _________________________ performed by: _________________________ Comments:...
  • Page 48 Check the seal of the ash bin or the transfer coupling Check heat exchanger ash screw Clean the lambda probe Visually check safety valves Visually check thermal relief valves Check operational readiness of safety devices in fuel path Clean the upper area of the heat exchanger Clean draught fan www.eta.co.at...
  • Page 49 Records Maintenance (expert) Tasks Notes Check seal on heat exchanger cover Check safety switch of the discharge Check rotary valve stop Check silicon hoses for differential pressure switch and transmitter Check air valve Check automatic closing of the actuators Check seal on combustion chamber door Calibrate lambda probe Perform heating test Reset maintenance counter...
  • Page 50 Check stoker drive chain Check the seal of the ash bin or the transfer coupling Check heat exchanger ash screw Clean the lambda probe Visually check safety valves Visually check thermal relief valves Check operational readiness of safety devices in fuel path www.eta.co.at...
  • Page 51 Records Cleaning (customer) performed on: _________________________ performed by: _________________________ Comments:...
  • Page 52 Check the seal of the ash bin or the transfer coupling Check heat exchanger ash screw Clean the lambda probe Visually check safety valves Visually check thermal relief valves Check operational readiness of safety devices in fuel path Clean the upper area of the heat exchanger Clean draught fan www.eta.co.at...
  • Page 53 Records Maintenance (expert) Tasks Notes Check seal on heat exchanger cover Check safety switch of the discharge Check rotary valve stop Check silicon hoses for differential pressure switch and transmitter Check air valve Check automatic closing of the actuators Check seal on combustion chamber door Calibrate lambda probe Perform heating test Reset maintenance counter...
  • Page 54 Check stoker drive chain Check the seal of the ash bin or the transfer coupling Check heat exchanger ash screw Clean the lambda probe Visually check safety valves Visually check thermal relief valves Check operational readiness of safety devices in fuel path www.eta.co.at...
  • Page 55 Records Cleaning (customer) performed on: _________________________ performed by: _________________________ Comments:...
  • Page 56 Check the seal of the ash bin or the transfer coupling Check heat exchanger ash screw Clean the lambda probe Visually check safety valves Visually check thermal relief valves Check operational readiness of safety devices in fuel path Clean the upper area of the heat exchanger Clean draught fan www.eta.co.at...
  • Page 57 Records Maintenance (expert) Tasks Notes Check seal on heat exchanger cover Check safety switch of the discharge Check rotary valve stop Check silicon hoses for differential pressure switch and transmitter Check air valve Check automatic closing of the actuators Check seal on combustion chamber door Calibrate lambda probe Perform heating test Reset maintenance counter...
  • Page 58 Check stoker drive chain Check the seal of the ash bin or the transfer coupling Check heat exchanger ash screw Clean the lambda probe Visually check safety valves Visually check thermal relief valves Check operational readiness of safety devices in fuel path www.eta.co.at...
  • Page 59 Records Cleaning (customer) performed on: _________________________ performed by: _________________________ Comments:...
  • Page 60 Check the seal of the ash bin or the transfer coupling Check heat exchanger ash screw Clean the lambda probe Visually check safety valves Visually check thermal relief valves Check operational readiness of safety devices in fuel path Clean the upper area of the heat exchanger Clean draught fan www.eta.co.at...
  • Page 61 Records Maintenance (expert) Tasks Notes Check seal on heat exchanger cover Check safety switch of the discharge Check rotary valve stop Check silicon hoses for differential pressure switch and transmitter Check air valve Check automatic closing of the actuators Check seal on combustion chamber door Calibrate lambda probe Perform heating test Reset maintenance counter...
  • Page 62 Check stoker drive chain Check the seal of the ash bin or the transfer coupling Check heat exchanger ash screw Clean the lambda probe Visually check safety valves Visually check thermal relief valves Check operational readiness of safety devices in fuel path www.eta.co.at...
  • Page 63 Records Cleaning (customer) performed on: _________________________ performed by: _________________________ Comments:...
  • Page 64 Check the seal of the ash bin or the transfer coupling Check heat exchanger ash screw Clean the lambda probe Visually check safety valves Visually check thermal relief valves Check operational readiness of safety devices in fuel path Clean the upper area of the heat exchanger Clean draught fan www.eta.co.at...
  • Page 65 Records Maintenance (expert) Tasks Notes Check seal on heat exchanger cover Check safety switch of the discharge Check rotary valve stop Check silicon hoses for differential pressure switch and transmitter Check air valve Check automatic closing of the actuators Check seal on combustion chamber door Calibrate lambda probe Perform heating test Reset maintenance counter...
  • Page 66 Check stoker drive chain Check the seal of the ash bin or the transfer coupling Check heat exchanger ash screw Clean the lambda probe Visually check safety valves Visually check thermal relief valves Check operational readiness of safety devices in fuel path www.eta.co.at...
  • Page 67 Records Cleaning (customer) performed on: _________________________ performed by: _________________________ Comments:...
  • Page 68 Check the seal of the ash bin or the transfer coupling Check heat exchanger ash screw Clean the lambda probe Visually check safety valves Visually check thermal relief valves Check operational readiness of safety devices in fuel path Clean the upper area of the heat exchanger Clean draught fan www.eta.co.at...
  • Page 69 Records Maintenance (expert) Tasks Notes Check seal on heat exchanger cover Check safety switch of the discharge Check rotary valve stop Check silicon hoses for differential pressure switch and transmitter Check air valve Check automatic closing of the actuators Check seal on combustion chamber door Calibrate lambda probe Perform heating test Reset maintenance counter...
  • Page 70 Check stoker drive chain Check the seal of the ash bin or the transfer coupling Check heat exchanger ash screw Clean the lambda probe Visually check safety valves Visually check thermal relief valves Check operational readiness of safety devices in fuel path www.eta.co.at...
  • Page 71 Records Cleaning (customer) performed on: _________________________ performed by: _________________________ Comments:...
  • Page 72 Check the seal of the ash bin or the transfer coupling Check heat exchanger ash screw Clean the lambda probe Visually check safety valves Visually check thermal relief valves Check operational readiness of safety devices in fuel path Clean the upper area of the heat exchanger Clean draught fan www.eta.co.at...
  • Page 73 Records Maintenance (expert) Tasks Notes Check seal on heat exchanger cover Check safety switch of the discharge Check rotary valve stop Check silicon hoses for differential pressure switch and transmitter Check air valve Check automatic closing of the actuators Check seal on combustion chamber door Calibrate lambda probe Perform heating test Reset maintenance counter...
  • Page 74 www.eta.co.at...
  • Page 76 www.eta.co.at...