International Building Code Provision; Initial And Seasonal Start-Up Checklist; General; Initial And Seasonal Start-Up - EVAPCO ATC-E Operation And Maintenance Instruction

Operation and Maintenance Instructions
International Building Code Provisions
The International Building Code (IBC) is a comprehensive set of regulations addressing the structural design and installation
requirements for building systems – including HVAC and industrial refrigeration equipment. The code provisions require that
evaporative cooling equipment and all other components permanently installed on a structure must meet the same seismic design
criteria as the building.
All items attached to Evapco Closed Circuit Coolers or Evaporative Condensers must be independently reviewed and isolated to
meet applicable wind and seismic loads. This includes piping, ductwork, conduit, and electrical connections. These items must be
flexibly attached to the Evapco unit so as not to transmit additional loads to the equipment as a result of seismic or wind forces.

Initial and Seasonal Start-Up Checklist

General

1. Verify that the overall installation reflects the requirements of the installation guidelines found in EVAPCO Bulletin 311 –
Equipment Layout Manual available at www.evapco.com.
2. For multi-speed fan motors, verify that 30 second or greater time delays are provided for speed changes when switching from
high to low speed. Also check to see if interlocks are provided to prevent simultaneously energizing high and low speed, and
confirm both speeds operate in the same direction.
3. Verify all safety interlocks work properly.
4. For units operating with a variable frequency drive, make certain that minimum speed requirements have been set. Check with
VFD manufacturer for recommended minimum speeds. Check with VFD manufacturer for recommendations on locking out
resonance frequencies. See "Fan System Capacity Control" section for more information.
5. Verify that a water treatment plan has been implemented including passivation of galvanized steel units. See "Water
Treatment" section for more details.
6. If the unit is going to sit idle for an extended period of time, follow all manufacturersʼ fan motor and pump instructions for long
term storage. Plastic sheets or tarps should never be used to protect a unit during storage. This practice can trap heat inside
the unit, and could potentially cause damage to plastic components. See your local EVAPCO representative for additional
information on unit storage.
7. For units subject to freezing climates, high humidity climates, or idle periods lasting 24 hours or more, motor space heaters are
suggested and (if equipped) should be energized. Alternatively, fan motors may be energized for 10 minutes, twice daily, to
drive any moisture condensation out of the motor windings.
BEFORE BEGINNING ANY MAINTENANCE, BE CERTAIN THAT THE POWER IS TURNED OFF

Initial and Seasonal Start-Up

1. Clean and remove any debris, such as leaves and dirt from the air inlets.
2. Flush the cold water basin (with the strainer screens in place) to remove any sediment or dirt.
3. Remove the strainer screen, clean and reinstall.
4. Check mechanical float valve to see if it operates freely.
5. Inspect water distribution system nozzles and clean as required. Check for proper orientation.
(This is not required at initial start-up. The nozzles are clean and set at the factory).
6. Check to ensure drift eliminators are securely in place and in the proper orientation.
7. Adjust fan belt tension as required. See "Fan Belt Adjustment" section.
8. Lubricate fan shaft bearings prior to seasonal start-up.
9. Turn the fan(s) and pumps by hand to insure it turns freely without obstructions.
AND THE UNIT IS PROPERLY LOCKED AND TAGGED OUT!
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