MANDÍK CPV Installation, commissioning, and maintenance
IZU 02/2021
MANDÍK, a.s., www.mandik.cz
R
35
Any maintenance intervals specified below are indicative only and valid for air containing
normal quantities of individual pollutants. These intervals may be extended or shortened,
depending on local operating conditions, the nature of the equipment, and the pollutants
contained in the conveyed air. These intervals do not relieve the operator of its obligation to
ensure the flawless and safe operation of the air handler on a day-to-day basis.
All elements which, by their nature, are intended to be extended, opened or easily dismantled
must be positioned so that the interior of the unit can be cleaned as thoroughly as possible.
Use a vacuum to remove coarse dirt and debris, or use a damp rag if necessary. Use a neutral
cleaning product to remove any grease and then again wipe down the surface with a damp rag.
Properly treat and repair any damage to painted surfaces or surface corrosion with a suitable
coating. Moving parts (hinges, door handles, etc.) must be lubricated with a lubricating spray as
needed. All inspection doors must be properly installed and checked to ensure they open
freely. Per the conditions for placement of the unit, a door may need to be levelled by adjusting
play on the fasteners on the handles and hinges. Check for proper mating of doors to the gasket
surfaces. Door gaskets must be inspected and then repaired or replaced if they leak.
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.)!
