alfaplam TERM -20 - 15. CLEANING AND MAINTENACE; 16. SOLID FUEL STORAGE

12
7
Sudden pressure
increase in the
installation while
water temperature
increase
Decreased
pressure in the
expansion vessel
or completely
empty. Remove
the cover or the
vessel valve cap
and release some
air through the
valve. If the
membrane is
destroyed, water
shall leak from
the valve, and if it
is only half-
empty, only air
will come out
If water is leaking from the valve, replace the expansion vessel.
If only air comes out from the valve, remove the installation vessel and
pump it. The pressure in the vessel must be equal to or greater than
height difference of the highest and lowest installation point. Example:
For height difference of 5m. the pressure is Pmin.0,5 bar.
Air in the
installation
Perform venting of the installation
8
The circulation pump
does not switch on or
blow a fuse
No power on the
electrical
connection.
Loose
connectors.
Check and tighten the screws at the connection spots. Check and if
necessary, replace the fuses, eliminate the malfunction of the motor or
installation connection
Capacitor failure
Replace the capacitor
Rotor blockage
Before the start of each heating, examine the easy rotor turning. Hot water
deposition may lead to rotor blockage. Turn around the motor shaft with a
wrench until free turning of the rotor is enabled.
The pump is
blocked due to
sediment
Disassemble and clean the pump.
9
The thermometer or
manometer does not
show the amount of
temperature or water
pressure in the
installation
Thermometer or
manometer failure
Replace the thermometer or manometer
10
Noise (sounds) from
the eating system
Defective pump.
Great clearance
between the rotor
shaft and
bushings
Reduce pump speed. Replace the pump envelopes or the entire pump
The pump is
functioning at too
high speed
Select low speed.
Air in installation
Release air from the heating system
Loose knobs or
some screw on
the solid fuel
Tighten knobs and screws
11
Sounds in the pump
The pressure at
the pump suction
part is to low
Increase system pressure or check the expansion vessel.
12
The solid fuel
overheats, loud noise
(cracking) is heard in
the boiler of the solid
fuel.
Electricity outage
has occurred, the
circulation pump
does not work
and the boiler of
the solid fuel
overheats. There
is a danger of
boiler rupture.
To avoid this occurrence, it is best to have backup battery power supply
of the circulation pump with an inverter.
Installation of a thermal exhaust valve (Fig. 7, pos. 13) is required as
additional security against solid fuel overheating.
If you do not have backup supply of the circulation pump or a thermal
exhaust valve installed, then you should open the bypass valve connected
in parallel with the circulation pump on the pipeline system and remove
embers from the solid fuel.
13
Cooling thermal fuse
is activated (thermo
valve) because
water temperature
increased over 95C
due to:
- loss of
electricity
This is proper and do not touch anything. When the system is cold,
thermal valve will be closed.
After that, check the pressure in the installation and fill the system to the
required.
- open ashtray
door and no
regulated
combustion
Close the ashtray door and through the knob on the cover of the ashtray
door and thermostat, reduce the water temperature in the system.