61
Troubleshooting table
MALFUNCTION TYPE
COMPONENT
POSSIBLE CAUSE/SOLUTION
NOISE
Fan impeller
Impeller deformed, unbalanced or loose
Nozzle damaged
Foreign bodies in the fan
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
Transducer failure
(with pressure control set point too high)
Machine
Filters not inserted
Access doors open
Dampers not calibrated
INSUFFICIENT THERMAL
EFFICIENCY
Heat exchange coil
Incorrect connection of inlet/outlet piping
Heat exchange coil dirty
Air bubbles in the pipes
Excessive air flow
Electric pump
Insufficient water flow
insufficient pressure
Wrong direction of rotation
Fluid
Temperature different from the project
Incorrect or faulty regulation bodies
WATER LEAK
Heat exchange coil
Leak from the heat exchange coil due to corrosion
Fan section
Dragging of drops due to high air velocity
Siphon faulty or not working
Clogged "overflow" drain
Summary of Contents for Modular Rotary
Page 15: ...15 Notes...
Page 28: ...28 Notes...
Page 33: ...33 VDI 6022 6...
Page 34: ...34 1 x TE8x35 1 x 8 5 1 x M8 2 x TE8x35 2 x 8 5 2 x M8 7...
Page 43: ...43 3 4 5 x 1 100mm 100mm 250mm 250mm 250mm 10 100mm 5mm...
Page 44: ...44 6 7 NO OK...
Page 45: ...45 H2O SOAP 8...
Page 46: ...46 9...
Page 47: ...47 Notes...
Page 62: ...62 Repair log DATE SERVICE TYPE TIME REQUIRED SIGNATURE...