Fans; Filters - Mandik CPV Installation, Commissioning And Maintenance

MANDÍK CPV Installation, commissioning, and maintenance

9.6 FANS

Before any intervention or work on the fans, wait for the fan impeller to completely stop.
They must then be locked out to prevent accidental start-up of the fan by another person!
The safety switch on the front or side of the unit (depending on the specific layout of the unit
itself) is designed for this purpose.
Check the fan impeller to ensure it is clean and vacuum up any coarse dirt and debris as
necessary, and then wipe up any fine dust using a damp rag.
Keeping the fan impeller clean is extremely important, especially in terms of ensuring the entire
assembly remains as balanced as possible. Properly treat and repair any damage to painted
surfaces or surface corrosion with a suitable coating.
Regularly inspect for an imbalance (vibrations) and the mounting of the impeller to the hub and
the hub to the shaft of the electric motor. Then check the width of the gap between the open
impeller and the suction inlet on the fan and tighten all fasteners on the motor and fan
assembly. Check the electric motor for vibration, bearing noise, potential overheating, the
torque tightness of terminals at the terminal blocks and the integrity of the conductive bonding
to the frame of the chamber.
Check the phase voltage and symmetry and measure motor current during maintenance. Repair
any damaged surfaces. Check for proper mounting of the electric motor to the base and all the
fasteners on the fan assembly base.

9.7 FILTERS

Dust captured in filter elements may cause allergic reactions if they come into contact with
skin, the mucus membranes, or eyes, and may cause difficulty breathing. Avoid contact with
such captured dust. Wear protective footwear during maintenance work and when replacing
filter elements, as well as other protective equipment as needed (respirator mask, etc.)!
Check the filer section to ensure it is clean and vacuum up any coarse dirt and debris as
necessary, and then wipe up any fine dust using a damp rag. Then check the condition and seal
around all filter elements. During filter replacement, it is necessary to avoid contaminating
other parts of the unit or new filter elements with dust.
• Bag and frame filters
Per the class of filtration of the used filters and their replacement interval, it is
necessary to ensure a complete set of replacement filters is kept on-hand and ensure
that their maximum storage period has not been exceeded. We recommend defining a
filter replacement interval based on observations during test operation of the unit. This
interval may depend on local conditions and may be shorter or longer than the regular
maintenance interval. It no case should the maximum allowed terminal pressure loss
for the specific type of filter elements in use, or the 12-month filter replacement
interval, be exceeded. All filters are changed at the same time.
IZU 06/2021 MANDÍK, a.s., www.mandik.cz
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