Maintenance Instructions for Optional Equipment
READ INSTRUCTIONS CAREFULLY BEFORE ATTEMPTING TO ASSEMBLE,
SERVICE OR OPERATE XETEX HEAT-X-CHANGER UNITS. FAILURE TO COMPLY WITH INSTRUCTIONS
COULD RESULT IN PERSONAL INJURY AND/OR PROPERTY DAMAGE!
SPECIAL WARNING: No untrained person should attempt to
install, maintain, or service XeteX Heat-X-Changer units.
FURNACES AND DIRECT FIRED HEATERS
- Inspect the area near the unit to be sure there is no combustible material
near the burner.
- Turn off the manual gas valve, manual pilot valve, and electrical power
to the gas duct furnace prior to working on this unit.
- Follow the detailed heater manufacturer's installation and maintenance
guide supplied with this manual.
COILS
- Check and clean the coil surfaces if needed.
DAMPERS
- Check the bearing and motor operation to assure smooth operation. Periodically
clean the damper blades and components.
INDIRECT EVAPORATIVE COOLING SYSTEM
Prior to seasonal start-up (where temperatures exceed 85 degrees):
- Clean the drain pan of any debris.
- Check the float operated makeup valve to be sure it is operating freely.
- Fill the recirculation pump side of drain pan with fresh water to the
overflow level.
- Set the float on the makeup valve to shut the valve off when the float
is approximately 1/2 inch below the overflow level.
- Inspect the water riser and distribution header for loose fittings, closed
valve, etc. Adjust valves for maximum flow without water carry-over off
evaporative media.
Seasonal Shutdown:
- Close shut-off valve in water makeup line and drain all exposed make-up
piping.
- Turn off IDEC system.
Recirculating Pump:
- The pump should be inspected regularly. Any trash or debris which may
have accumulated in the sump or on the strainers should be removed.
- Each month in operation, the pump should be drained, cleaned, and flushed
with fresh water to remove the silt and sediment which normally collects
in the sump during operation.
Make-up Valve
- The float controlling the valve can be adjusted. Set the valve so it is
completely closed when the water level in the cold water sump is 1/2 inch
below the overflow level.
- The operating water level should be checked monthly with the circulating
pump running. Also check the float to maintain the recommended level.
- The valve should be inspected annually for leakage. The valve seat should
be replaced if necessary.
Water Distribution Riser and Head:
- Check to see if the water is covering the evaporative media.
