W W W . B A L T I M O R E A I R C O I L . C O M
3
• The basin heater is not designed to prevent icing during unit operation.
• BAC units are typically installed immediately after shipment and many operate year round. However, if the unit is to be stored for a prolonged period of
time either before or after installation, certain precautions should be observed, as outlined in “Prolonged Outdoor Storage” on
page 9
.
• Ensure controls for the fan and pump motors are set to allow a maximum of six on-off cycles per hour to prevent motor overheating.
• Do not use steam or high pressure water to clean dry coils, PVC eliminators, combined inlet shields, fill, hail guards, or any other,
nonmetallic materials.
• Never use chloride or chlorine based solvents such as bleach or muriatic (hydrochloric) acid to clean stainless steel. It is important to rinse the surface
with warm water and wipe with a dry cloth after cleaning.
General Maintenance Information
Equipment Precautions
NOTICE
The services required to maintain a piece of evaporative cooling equipment are primarily a function of the quality of the air and water in the locality of the
installation:
•
AIR:
The unit should be located such that unusual quantities of industrial smoke, chemical fumes, salt, or heavy dust do not enter the equipment. Such
airborne impurities entering into the equipment and absorbed by the recirculating water can form a corrosive solution.
•
WATER:
As water evaporates from the equipment, dissolved solids are left behind, which were originally contained in the make-up water. These
dissolved solids may be either alkaline or acidic and as they are concentrated in the circulating water, they can cause scaling or accelerated corrosion.
The extent of impurities in the air and water determines the frequency of most maintenance services and also governs the extent of water treatment
which can vary from a simple continuous bleed and biological control to a sophisticated treatment system. Refer to “Water Treatment” on
and
for more details.
Warranties
Please refer to the Limitation of Warranties in the submittal package applicable to and in effect at the time of the sale/purchase of these products.
Described in this manual are the recommended services for start-up, operation, and shutdown, and the approximate frequency of each.
• CAUTION:
This equipment should never be operated without all fan screens, access panels, and access doors in place.
• CAUTION:
Openings and/or submerged obstructions may exist in the bottom of the cold water basin. Use caution when walking inside the
equipment.
•
CAUTION
: Follow exposure control and personal protective equipment requirements as outlined in the MSDS for all recommended lubricant and
maintenance materials.
•
CAUTION
: BAC does not recommend field application of aftermarket coatings in the cold water basins of products equipped with electric immersion
heaters. The coating material may create an increased risk of fire if the heaters remain energized for any reason without sufficient water in the cold
water basin.
