Mechanical Equipment; Startup - SPX Marley LW032 B Series User Manual

Warning
Warning
8
operation
also be incorporated into the main control panel. Basin heaters and electric
water level packages, when selected, are contained within separate panels,
but are wired to the main control panel to provide a single point power con-
nection for power supply.

Mechanical Equipment

Always use caution when working near electrical and mechanical
components. Always shut off electrical power to the fluid cooler fan
motor prior to performing any maintenance on the fluid cooler. Any
electrical switches should be locked out and tagged out to prevent
others from turning the power back on.
LW fluid coolers use Electronically Commutated (EC) fan motor(s) to directly
drive the fluid cooler fan(s). The fan, motor, cylinder, guard and mounting plate
are combined into one assembly, eliminating installation and maintenance
steps typically required with belt or gear-driven fan drive systems. Multiple
fan units are designed for synchronous variable speed operation of all fans.
1. Spin the fan(s) manually to assure that all fan blades properly clear the
inside of the fan cylinder(s).
2. Momentarily bump (energize) the motor(s) and observe rotation of the
fan(s).
3. Run the motor(s) and observe the operation of the mechanical equipment.
Operation should be stable.

Startup

Microorganisms including Legionella bacteria can exist in premise
plumbing including cooling towers. The development of an effective
water management plan (WMP) and implementation of maintenance
procedures are essential to prevent the presence, dissemination and
amplification of Legionella bacteria and other waterborne contami-
nants throughout premise plumbing. Before operating the cooling
tower, the water management plan and maintenance procedures
must be in place and regularly practiced.
Water System:
1. Consult a knowledgeable water treatment professional to clean and treat
your new cooling tower prior to startup. Cooling towers must be cleaned
and disinfected regularly in accordance with ASHRAE Standard 188 and
Guideline 12.