Kessel 52101 Manual page 3

Installation instructions
1. Check light liquid trap and backwater valve for perfect condition. Do not install damaged parts.
2. Level out drain body and grating.
3. For frost-free or deeper installation, set the extension piece art. no. 48988 onto the light liquid trap. Use the upper cover section Ecoguss (art. no. 67985) for areas open for traffic
(Class B). A shallow-bed floor construction can be realised using the shallow-bed upper section (art. no. 48968).
4. For installation below the locally defined backwater level, only the light liquid trap with backwater valve according to DIN EN 13564 type 5 is to be used.
Products without backwater valve can easily be converted (art. no. 27606).
Operating instructions
1. After installation, as well as after every emptying or cleaning process, fill the light liquid trap with water up to the top edge. Then lift the floater into a floating position.
(If necessary, add more water slowly to check the floating function.)
2. After the permissible storage quantity has been collected, skim off the light liquid (heating oil) and dispose of it safely. Comply with local regulations for water protection. If light liquid
is not skimmed off, the floater will close the outlet and thus cause backwater.
3. To discharge light liquid into the outlet will pose a danger to life.
4. To guarantee undisturbed operation, the system must be slowly filled with water at regular intervals, at least once a month. Do not add water in gushes to prevent the floater from
closing the outlet.
5. Wastewater is to be discharged only via the grating of the light liquid trap.
General information about backwater valves
The backwater valve serves to prevent wastewater from flowing backwards in case of backwater. It must always be kept ready for operation and must be easily accessible at all times.
The backwater valve has two flaps which are usually closed and open automatically when water flows out. One flap can be locked using the emergency closure. It is recommended to
keep the emergency closure closed during longer operational interruptions.
DIN EN 13564 must be heeded for the draining system including the backwater valve.
Inspection: The backwater valve must be inspected once a month by the operator or his representative. The emergency closure must be actuated during this inspection.
Maintenance test for the backwater valve in accordance with DIN EN 13564-2
The backwater valve must be serviced every six months by an expert:
Remove the backwater valve and clean it. Lubricate the seals (use gum-free grease e.g. silicon grease).
Clean the guide groove before installation and insert the backwater valve as shown in the figure. Pleae
note that emergency closure is to be in the "open" position.
Push the backwater valve down as far as possible (see figure) and fix it in place with the one-handed
closure. Then fill the light liquid trap with water again and activate the floater (see Operating instructions).
Leak test of the backwater valve (art. no. 52101)
Remove the backwater unit from the basement drain and clean it. Check the seals and replace if necessary. The leak test is performed with the use of a bubble in the outlet pipe. The water
must be up to 100 mm above the outlet pipe. Observe the water level in the funnel for 10 minutes, if necessary, refill water to keep the original level. The backwater valve is considered suf-
ficiently tight if no more than 500 cm of water have to be refilled during this period. After the test, remove the funnel, screw in the screwed sealing plug and open the emergency closure.
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