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IV-50 EC | 17
11.4
Variable speed fans
◊
Pay particular attention to damage from vibrations.
◊
After commissioning, start with shorter maintenance intervals.
◊
If no damage occurs, adjust the maintenance intervals up to those stated in the operating instructions.
◊
Responsibility for gradual adaptation is with the system operator/installer.
11.5
Overhaul / Further maintenance
◊
Pay attention to the safety references and preconditions as in normal maintenance.
For the following activities and functions, contact Systemair:
o complete overhaul of motors
o monitoring of conditions
o vibration analysis
After 20,000 hours of operation or 5 years of normal operation:
◊
Check the condition of the shaft sealing rings and shaft bearings and take action if necessary.
11.6
Replacement parts
◊
Replacement parts must be installed by a Systemair representative and a UL witness in order to maintain the UL Safety Listing.
12 Cleaning
12.1
Safety information
◊ Cleaning may only be carried out by adequately qualified persons, see Table 1: Qualifications.
◊
Wear protective equipment during all work in the vicinity of the fan, see 2.2 Personal protective equipment.
◊
Observe the 5 rules of electrical safety, see 2.3 Five rules of electrical safety.
12.2
Preconditions
◊ The power supply has been switched off (all-pole circuit breaker).
◊
The impeller must be at a standstill.
12.3
Cleaning guidelines
◊
Do not use steel brushes or sharp-edged objects.
◊ Do not use a high-pressure cleaner (steam jet cleaner) under any circumstances.
◊
Do not bend the fan blades when cleaning.
◊
Use nylon brushes and fabric cleaning cloths.
◊
When cleaning the impeller, pay attention to balance weights that have been positioned.
◊
Keep the airways of the fan clear and clean them if necessary with a nylon brush.
13
De-installation / Dismantling
◊ De-install and dismantle the fan in reverse order of installation (7 Installation) and electrical connection (8 Electrical connection).
14 Disposal
◊
Ensure material is recycled. Observe national regulations.
◊
The device and the transport packaging are predominantly made from recyclable raw materials.
◊
Disassemble the fan into its components.
◊ Separate the parts according to:
o Reusable material
o Material groups to be disposed of (metal, plastics, electrical parts, etc.)
Important
Varying speeds may lead to increased vibrations dependent on the
support structure.
