Air Filters; Indoor Coil; Outdoor Coils; Fresh Air Intake - York VCH-25A Installation Manual

1 Installation manual
1.13 Regular maintenance tasks performed by specialised personnel
Outdoor fan and indoor fan belts
A T T E N T I O N
Before opening any access to the inside of the unit, disconnect all electricity supplies.
Check their condition and correct tensioning. Any replacements must be of the same type and size as
the original and tensioning must be checked again after 24 hours of operations.

Air filters

Wash once removed from the unit, sliding them out from their guide rails.

Indoor coil

You should visually inspect the coil when performing filter maintenance. The complete surface of the fins
must be kept clean.
A T T E N T I O N
Never use water hoses inside the compartment.
Clean the fins using a soft brush or vacuum cleaning, taking care not to damage them.
Condensate tray and drain trap
Remove any dirt or remains from the tray.
• Check that the water outlet and the drain trap are not blocked.
• Check that the water is correctly released.
• Prime the drain trap (fill with water) if required.

Outdoor coils

A T T E N T I O N
Never use water hoses inside the compartment.
Remove all dirt or remains from the surface of both sides of the coils. Clean the surface of the fins using
a soft brush or compressed air, taking care not to damage them. Given that they are exposed to the
outdoors, water with suitable detergent may be required for cleaning. In this case, always clean from the
inside out and from top to bottom.

Fresh air intake

Where the unit is fitted with the economiser accessories or return fan, maintenance must be performed
on the dampers, checking the correct working order of their components (shaft, louvers, motor).
Cooling Circuit
Check the following at the start of each cooling or heating season:
• Operating pressures.
• Control elements.
• Temperature leaps.
• Other checks according to the rules of the trade.
Electrical and mechanical operation
Check the following at the start of each cooling or heating season:
• The amps of all motors.
• The condition of the electrical connections.
• The working order of the safety controls.
The motor bearings for the indoor and outdoor fans are permanently lubricated and do not require
maintenance.
44