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Katherm HK
Ready-to-install trench heaters with EC tangential fan
Assembly and installation instructions
11. Maintenance
11.1 Information / Maintenance / Maintenance intervals
The section below describes maintenance work on the Katherm HK
needed for optimum and trouble-free operation of the equipment. If there
are signs of increased wear during regular checks, adjust the required
maintenance intervals to the actual wear and tear.
Only permit trained qualified personnel to perform maintenance work
on Katherm HK trench heaters in compliance with the installation and
operating instructions as well as any regulations currently in force.
Regularly maintain and inspect Katherm HK units to ensure their proper
function and performance.
If the unit is operated in accordance with VDI 6022, adapt the
maintenance intervals in certain sections to the provisions of VDI 6022
(Decentralised air handling units / Terminal devices). Only allow personnel
who have undergone appropriate training in accordance with Category B
(possibly Category C).
Maintenance task
Maintenance interval
Floor trench
Check the floor trench (internally) for dirt, damage and corrosion.
Every 6 months
Filter
Regularly check the filters installed above the tangential fans for any impermissible
dirt, damage and noises.
Clean the filters carefully by tapping or vacuuming them in the event of dirt.
Never use a cleaning agent to clean the filters!
Replace the filters if they are heavily soiled.
Every 3 months
Fan / Finger guard
Check the tangential fans and finger guards for dirt, damage and corrosion.
Clean the fan shafts carefully with a cloth if dirty.
Every 6 months
Heat exchanger/carrier
Check the built-in heat exchanger for dirt, damage, corrosion and leak-
tightness.
Carefully vacuum the heat exchanger if dirty.
Every 3 months
Condensate tray
Check the condensation tray for dirt, damage, leak-tightness and correct
drainage. Remove any condensation deposits from the condensation tray.
Every 3 months
Condensation drain / condensation pump
Check the condensation drain for dirt, damage, leak-tightness and correct
drainage. Remove any condensation deposits from the drain or drain connector.
Check the condensation pump and float switch for dirt and correct operation.
Clean the condensation pump and float switch if necessary.
Important:
Carry out an initial service on the condensation pump and float
switch directly after commissioning!
Every 3 months
Waterside connections / valves
Monitor the waterside connections, valves and threaded connections for leak-
tightness, dirt and correct working order.
Every 6 months
Grilles
Check the grilles for dirt, damage and corrosion. Use a cloth to carefully clean
the grilles if dirty.
Every 6 months
Electrical wiring / control box
Check that the electrical connections and tight and undamaged.
Every 6 months
Summary of Contents for Katherm HK Series
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