Fan Assembly And Drives - Denco CAIRplus Operation Manual

CAIRplus
8.4

Fan assembly and drives

8.4.1 Commissioning of belt-driven fan assembly
DANGER!
8.4.2 Maintenance of belt-driven fan assembly
DANGER!
PR-2009-0096-GB • Subject to modifications • R8-10/2015
ELECTRICAL HAZARD AND DANGER OF ROTATING UNIT PARTS WITH
SHARP EDGES!
•
OBSERVE PERSONAL PROTECTION MEASURES
•
Please consider the safety instructions on page 5 and page 55ff when
performing all the described activities!
•
Please consider the safety instructions on page 5 and page 55ff when performing
all the described activities!
Risk of damage to the unit!
•
Do not activate the fan if damper blades are closed.
Complete the following commissioning steps:
•
Check general condition of the entire casing and all components for damage and
correct fit.
•
Remove transportation and safety locks.
•
Check belt for proper tension and alignment.
•
Check fan rotation direction at all speed stages.
•
Measure the motor current consumption. The rated motor current should fall within
the range given on the motor identification plate, this reading must not exceed the
specified limit.
•
Check motor protection device for proper operation.
•
For motors with separated air supply inspect the air inlet grille and air ductwork for
clean condition. The entire cross-section of the ductwork must be unobstructed.
•
Check all system components (air-regulating and shut-off dampers, fire protection
dampers, flow rate controller) for proper operation, open to ensure free movement.
•
Please consider the safety instructions on page 5 and page 55ff when performing
all the described activities!
Risk of damage to the unit!
With a completely stopped fan and open control valve of the heater assembly
(pumped water, steam or refrigerant), temperatures inside the unit are roughly
equivalent to the supply temperature of the heating medium (normally around 90
°C). This can result in deformation damage to plastic parts (especially to plastic
droplet separators, surfaces of humidifier honeycombs etc.).
Besides, fans and motors with sealed bearings (re-lubrication is not required) may
sustain damage at temperatures above 80 °C. Consider a maximum operating
temperature of 40° C for a number of electrical built-in components (frequency
inverters etc.) – see and observe relevant manufacturer's instructions!
Commissioning and Maintenance
ATTENTION
ATTENTION
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