KOJA 0603, Instruction For Operation And Maintenance

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AIR HANDLING UNIT FUTURE
INSTRUCTIONS FOR OPERATION AND MAINTENANCE
Damper, mixing and return air sections FPTP, FPTA, FPTB AND FPTC
12 V. 2.0 2017-02-13
3. DAMPER, MIXING AND RETURN AIR SECTIONS
FPTP, FPTA, FPTB AND FPTC
FPTP FPTA FPTB FPTC
CAUTION
The pressure rise of the fan can be higher than the maximum permissible pressure
difference of the damper. The damper should open before the fan starts, and close after
the fan has stopped.
3.1. Operating conditions
• The operating temperature range is –40…+80 °C.
• The maximum permissible pressure difference across the damper is 1,200 Pa.
3.2. Commissioning
• Make sure that the dampers of the sections open and close fully and that the actuator works according
to the control.
3.3. Maintenance
• The maintenance interval is 6 months.
• Make sure that the leafs open and close unhindered up to the set limits.
• Make sure that the lever mechanisms between the leafs and between the actuators and shafts are not
loose or worn.
• Lubricate the joints in lever mechanisms with light oil.
• Tighten screws, if necessary, and replace worn parts.
• Make sure that the leaf and end plate gaskets are intact. Replace damaged and worn gaskets.
• Clean the section, if necessary.