16
CV072018-1
Note:
Please note that heat recovery units are integrated into a general system. For this reason, failures may be caused by other components of
the system, the incorrect interaction between the unit and the system, or the environmental conditions other than the specificities for the
design of the unit.
Directives:
Standard rules:
• Machinery Directive 2006/42 / CE
• EN 60335-1: 2010
• EN 60947-3: 2009
• Low voltage directive 2014/35 / UE
• EN 60947-5-1: 2004 + AC: 2005 + A1: 2009
• EN 13857: 2008
• EMC Directive 2014/30 / UE
• EN 12100-1: 2003
• EN 12100-2: 2003
• ECODESIGN 2009/125 / CE
• EN 60204-1: 2006
PROBLEMS
POSSIBLE CAUSE
CHECK
POSSIBLE SOLUTION
High consumption
engine
Different point of performance
of the predicted;
Excess flow;
Check the flow rate and pressure drop;
The fan speed;
Reduce the rotation speed;
Create a pressure drop in the insta-
llation;
Excess air flow
System for air distribution, pressure
drop in the overestimated installa-
tion;
Check the flow rate and pressure
drop;
The fan speed;
Reduce the rotation speed;
Create a pressure drop in the
installation;
Insufficient air
flow
Air distribution system, the pres-
sure loss of the installation under
estimated;
Check the flow rate and pressure
drop;
The fan speed;
The increase in the speed of rotation
(according to the available power of
the motor and the maximum speed
of the fan);
Excessive noise
Flow too high, very high index, per-
formance;
Pressure drop too high;
Check the flow rate and pressure
drop;
The decrease in the flow velocity;
Avoid unstable fan operation areas;
Damaged bearings, damaged metal
components;
The components in unbalanced
movement;
Bearings of state of the components;
Strange vibrations;
Replace bearings, damaged compo-
nents;
Replacement of the fan;
The unit does
not work
Could not power source;
Power supply;
Circuit breaker;
Restore the power supply;
The reset of the circuit breaker;
The low efficiency
of the stove
The dirt of the inadequate recovery
element
The state of cleaning stove
Clear stove
RESOLUTION OF PROBLEMS
