ESIE19-06
|
Part 4. Maintenance
4.1. HRV unit
21/01/20
|
Version 1.1
Page 57
Modular L Smart
4.1.5. Troubleshooting table
MALFUNCTION TYPE
COMPONENT
POSSIBLE CAUSE/SOLUTION
NOISE
Fan impeller
Impeller deformed, unbalanced or loose
Nozzle damaged
Foreign bodies in the fan
Transmission
Motor or fan not attached well
Bearings
Bearing worn or deteriorated
Motor
Incorrect supply voltage
Worn bearings
Contact between the rotor and stator
Ducts
Excessive speed in the ducts
Anti-vibration joint too taut
INSUFFICIENT AIR FLOW
Ducts
Load losses superior to the demand
Dampers closed
Obstructions in the ducts
Filters
Too dirty
Heat exchange coils
Too dirty
EXCESSIVE AIR FLOW
Ducts
Load losses inferior to the demand
Ducts too big
Terminals not installed
Machine
Filters not inserted
Access doors open
Dampers not calibrated
INSUFFICIENT THERMAL EFFI-
CIENCY
Heat exchange coil
Connection of inlet/outlet piping
Heat exchange coil dirty
Air bubbles in the pipes
Excessive air flow
Insufficient water flow
Insufficient pressure
Wrong direction of rotation
Fluid
Temperature different from the project
Incorrect regulation bodies
WATER LEAK
Fan section
Leak from the heat exchange coil due to corrosion
Dragging of drops due to high air velocity
Clogged “overflow” drain
Summary of Contents for Modular L Smart
Page 1: ...Service Manual Modular L Smart ESIE19 06 ...
Page 6: ...ESIE19 06 Page 6 21 01 20 Version 1 1 Modular L Smart ...
Page 16: ...ESIE19 06 Part 1 Introduction 1 4 How to use Page 16 21 01 20 Version 1 1 Modular L Smart ...
Page 59: ...ESIE19 06 Part 4 Maintenance 4 1 HRV unit 21 01 20 Version 1 1 Page 59 Modular L Smart ...
Page 60: ...ESIE19 06 Part 4 Maintenance 4 1 HRV unit Page 60 21 01 20 Version 1 1 Modular L Smart ...