Equipment Precautions - BAC Vertex VRC A-1012N Series Operation & Maintenance Manual

Evaporative condenser
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placing weight on an eliminator can result in physical injury and/or equipment damage. After ensuring that the fan and
pump motors are locked and tagged out, lift and remove eliminators as necessary to perform recommended maintenance
and inspections. If access to the top of the coil is required, place a piece of plywood at least 1/2 inch thick on top of the
coil to protect the surface while performing the recommended maintenance. When finished, carefully remove the plywood
and re-install any eliminators which were removed.
using the retaining system.

Equipment Precautions

NOTICE
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 either before or after installation, certain precautions should be observed, as outlined in
section Prolonged Outdoor Storage on Page 16.
Spray system pressure greater than 10.0 psig may cause damage to the distribution system.
Check to ensure the controls for the fan motor are set to allow a maximum of six on-off cycles per hour to prevent motor
overload.
Covering the unit with a clear plastic tarpaulin during storage can trap heat inside the unit and cause damage to the PVC
components. If units must be covered during storage, an opaque, reflective tarp with vents should be used.
Do not use steam or high-pressure water to clean PVC eliminators or materials other than steel.
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.
Mechanical and operational methods must be employed to protect these products against damage and/or reduced
effectiveness due to possible freeze-up. Please refer to BaltimoreAircoil.com or contact your local BAC Representative for
recommended protection alternatives.
The basin heater is not designed to prevent icing during unit operation.
The stand alone BAC heater control panel temperature/low level control can only be used with the supplied combination
temperature/liquid level sensor probe.
For the stand alone BAC heater control panel, Do not operate the system unattended or for extended periods of time
during test mode (resistor across terminals T1 and T2). Operation in water temperatures above 45°F (7.2°C) could
damage the unit.
For the stand alone BAC heater control panel, do not operate the system unattended or for extended periods of time with
terminals G1-G2 jumpered. A low liquid level condition could occur, and the system will not shut off which could result in
damage to the heater and unit.
For a unit with a VFD, with a switching frequency of 2.5 kHz, the line lead length cannot exceed 100 feet. If the switching
frequency is higher than 2.5 kHz and/or the line lead length exceeds 100 feet, a dV/dT output filter is recommended to
protect the motor. Since the switching frequency and maximum line length requirements vary between VFD and motor
suppliers, contact your local BAC Representative to determine if a dV/dT filter is required. For fan motors controlled with
VFDs, when reversing the direction of fan rotation, allow the fan to come to a complete stop before restarting the motor.
For fan motors controlled with VFDs, when reversing the direction of fan rotation, allow the fan to come to a complete stop
before restarting the motor.
Vertex™ Evaporative Condenser Operation & Maintenance Manual – Warnings and Cautions
: Do not use the plastic drift eliminators as a walking, working, or storage surface. Stepping on or
: Drift eliminators can separate from the product during high winds. Fasten drift eliminators in place
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