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Service and maintenance

General

The frequency of maintenance is strongly depending on the quality of the combustion air and the

intensity of use. When used in poultry houses, maintenance is advised every 6 weeks or by changing

the animals. By use in clean environment conditions, the maintenance period can be extended but not

longer than 6 months. In case heaters are not used for a long period, always do maintenance first before

using them again. Wear safety goggles during cleaning with compressed air.

Parts that are broken, or are not functioning well, must be replaced directly by identical ones of same

brand and type. Consult the dealer or manufacturer in case of doubt.

WARNING: always switch off the heater and isolate the gas before carrying out any service or

maintenance operation.

Order of maintenance

•

First clean the heater and filter as described below by daily maintenance. Especially remove dust

directly behind the venturi.

•

Clean the reflector (5) and other parts (excluding the burner ceramics (3) and burner gauze(4)) with

water and mild detergent and a cloth or soft brush.

•

Carefully inspect the burner gauze (4) and burner ceramics (3) on damage, cracks and holes.

Replace when needed.

•

To clean the burner (1), burner gauze (4) and ceramic stone (3) use an air hose (pressure max 2

bar/30 psi) and blow inside the venturi (12) and on the ceramic stone (3). Do this for 60 seconds

and repeat 2-3 times. Never use water to clean your heater or any steel brush.

•

Check the injector (16) for obstructions. Remove obstructions by brushing them away and by using

a pin or drill to clean the injector hole. Make sure that the injector hole does not become wider by

using a pin or drill that is larger than the size stamped on the side of the injector.

•

Clean the inside of the gas safety device (23) and injector (16) with compressed air. Make sure that

the pressure of the compressed air is not larger than the 1,5x the pressure stamped on the safety

device (65 or 1400 mbar). Otherwise the rubber seals inside the safety device will become damaged.

•

Check the condition of the thermocouple sensor (28). Replace in case the tip is burnt-in already, or

the copper tube is kinked, to avoid unnecessary shut down later on.

•

Check all gas carrying parts and connections for gas tightness with leak detection liquid or soapy

water according the procedure in the standards applicable in the local installation situation. Never

use a flame for soundness checks!

•

In case a gas hose is used, check this carefully for cracks, wear and other signs of damage or

alteration. Replace it also when the maximum lifetime printed on the hose, or the maximum allowed

by local requirements, has passed.

•

Commission the heater after maintenance and check it carefully during first ignition, firing and

extinguishing.

In case the heaters need to be stored for a long time, make sure that no dust, spiders, etc. can enter

the heater. Use the carton packaging box to store the heater, or a plastic bag if the box is not available

anymore, and close this carefully.

Daily maintenance

In dusty or dirty environments check and clean a heater every day. In case a heater is not cleaned

internally, especially the venturi, the heat efficiency will drop and the lifetime of the burner gauze will

become shorter or they will be destroyed. Also, there is a possibility that carbon monoxide (poisonous)

will be produced and soot deposit will occur. To keep the heater internally and externally free of dust is

important. Inspect and clean also every day the combustion air openings into the building and the proper

functioning of exhaust fans.

Dust filter

Dust filters must be check every day and cleaned in case needed. Remove a filter before cleaning. Dry

dust can be removed by tapping the filter softly against a solid surface like the sole of a shoe. The dust

will fall off easy now. In case the filter is still not clean, brush the surface gently with a brush or clean it

with compressed air from inside to the outside. In case the dust is greasy, clean the filter in warm water

with a bit detergent. Make sure that filters are dry before placing them back. Even with the use of a filter

still check the heater regularly inside while very fine dust still will pass the filter and pollute the heater

internally.

Advice: Lots of farmers use a second set of dust filters. They replace the dusty ones directly with the

clean ones and clean the filters outside the barn to avoid unneeded disturbance of the animals.

Version 1.0: March 2018

manual number: 0009 0520EN