Vents VCUN, User Manual, Page: 14 / 20

14
VCUN
www.ventilation-system.com
Prior to performing any technical maintenance and repair disconnect the fan from power mains and wait until its rotating parts come to
a complete stop. The technical maintenance includes periodic cleaning of the surfaces from accumulated dust and dirt.
The impeller blades require thorough cleaning once in 6 months.
Connection sequence:
• Cut off power supply to the fan.
• Provide access to the impeller blades.
• For the VCUN fan – unscrew the screws and remove the ring.
• Clean the impeller blades with a dry soft brush or compressed air.
• If the fan is heavily soiled, wet cleaning is recommended.
• To clean the impeller blades, use a soft cloth wetted in a mild detergent solution.
• Avoid liquid dripping on the motor.
Perform all the above operations in the reverse order after cleaning.
TECHNICAL MAINTENANCE
1. 2.
S1
PE
Maintenance checklist
Service the fan regularly to ensure reliable, safe and efficient operation.
General maintenance includes:
• Daily technical maintenance (
DTM
).
• Technical maintenance (
TM-1
) after 1000 hours.
• Current repair (
CR
) after 10 000 hours.
• Overhaul (
O
) after 20 000 hours. All types of work should be performed according to the schedule, regardless of the technical condition
of the fan. A
DTM
is performed by a locksmith of the 4th or 5th category. A
CR
and
O
are performed by a locksmith and an electrician
for the repair and operation of equipment.
DTM:
• Check the tightening of the bolts.
• Check the reliability of the grounding.
• Check the absence of unwanted sounds.
TM-1:
• Carry out the
DTM
operations.
• Eliminate malfunctions of bolted and welded joints.
• Check the clearance between the impeller and the air distribution box.
СR:
• Carry out the
TM-1
operations.
• Clean the casing and impeller from dirt.
O:
• Disconnect the air ducts.
• Carry out per-unit disassembly.
• Carry out per-unit assembly from new or repaired parts.
• Check the grease in the bearings, carry out adjustments, tests.