REMKO EWS 200 E, Руководство по сборке и эксплуатации

Страница: 23 / 28

11 Care and maintenance
Care
n Only clean the units with a damp cloth. (by
adding, for instance, a liquid household
cleaner). Do not use any caustic, abrasive or
solvent-based cleaning products.
Maintenance
n It is recommended that you take out a mainte-
nance contract with an annual service from an
appropriate specialist firm.
This enables you to ensure the operational reli-
ability of the plant at all times!
n Regularly check the function of the safety
valves.
The expansion water amount at maximum heat
(approx. 80°C) represents approx. 3.5% of the
storage tank capacity. When the safety valve test
knob is lifted or in the “Test” position, the water
must flow unhindered out of the safety valve body
into the drainage funnel.
CAUTION!
This can cause the cold water supply and parts
of the storage tank connection fitting to become
hot!
If the storage tank is not heated or when hot water
is removed, no water should be dripping from the
safety valve. If this does occur, either the pressure
in the water pipe or the system-side heating pres-
sure is greater than the permitted value or the
safety valve is defective. If the pressure in the
water pipe is higher than permitted, a pressure
relief valve must be used.
In hard water areas, the limescale which forms
inside the storage tank must be removed by a spe-
cialist after one to two years of operation. Cleaning
is performed through the flange opening.
1. Drain the storage tank
2. Remove the heating flange
3. Clean the storage tank
4. Refit the flange with a new seal. Tighten the
screw crosswise to a torque of 42 Nm
The special enamelled inner tank of the
water heater must not come into contact with
scaling solvent. Do not use a descaling
pump!
5. Thoroughly rinse out the unit
6. Fill and bleed the storage tank again after
cleaning
7. Observe the heating process as per initial
commissioning. The installed false anode
must be checked by a specialist at least once
every 2 years of operation and this inspection
must be documented. If servicing tasks are
performed, the cleaning and servicing flange
should be opened, and the storage tank
inspected for any infiltration or soiling.
Only with the use of an external current anode:
The control lamp of the external current anode
must be monitored regularly.
In the process, the following applies:
green = system OK
red flashing = malfunction (in this case contact
customer service).
For a faultless function, the tank must be filled with
water.
23