AL-KO AT4F Series, Operating And Assembly Instruction Manual

Page: 104 / 140

Translation of original operating instructions
104
AL-KO AT4F ATEX
Hygiene checks
The aim of the hygiene checks to be performed regularly is to determine and eliminate hygiene deficiencies on the air
conditioning systems at an early stage through frequent visual inspections or random microbiological self-checks.
The regular hygiene checks include the following measures:
„
Visual inspection of the relevant unit area for hygiene deficiencies such as e.g. microbial growth or soiling, rust for -
mation, calcium deposits and damage.
„
If soiled components are detected during the hygiene checks, these must be cleaned immediately.
„
If necessary for cleaning, the inspection glasses of the AT4F ATEX unit series can be easily removed and have two
lenses.
„
If housing covers sealed with sealing material are removed for maintenance purposes, the inside of the housing
must be sealed again following maintenance using microbially inert sealing material.
7.3.1 Finned heat exchanger
These include the pump hot water and pump cold water heat exchangers, as well as the evaporators, condensers and
steam registers.
WARNING
Risk of cuts
During maintenance and cleaning of the heat exchanger there is a risk of cuts.
„
Wear personal protective equipment (cut-proof gloves).
WARNING
Risk of explosion
Due to electrostatic charging of the heat exchanger, there is a risk of explosion.
„
Integrate the heat exchanger back into the unit potential after each unfastening of the
equipotential bonding.
CAUTION
Risk of burns as a result of contact with hot surfaces and media (plate heat exchanger,
heat exchanger and electric heating coil)
„
Wait until the hot surfaces have cooled down.
„
Wear personal protective equipment.
CAUTION
Risk of slipping! Leaked medium/condensate
„
Immediately take up the spill quantity and dispose of it properly.
ATTENTION
At temperatures below freezing, the heat exchanger must be either drained and blown out
with compressed air, or filled with a commercially available antifreeze with corrosion inhibiting
additive due to the risk of freezing and corrosion.