2-36 888-2629-200 10/6/10
WARNING: Disconnect primary power prior to servicing.
Section 2 Installation
Maxiva ULX COFDM Series
2.11.1 Heat Exchanger & Pump Module
Start-up and Maintenance
The electrical installation should have already been completed and should be in
accordance with the National Electrical Code and any local codes and regulations. The
incoming power supply can be 208 to 240V-3Ph-50 or 60Hz, or 380 to 415V-3Ph-50 or
60Hz. Exact line voltage and configuration should be specified at the time the order is
placed. Fan and pump motors are three phase and have current overload protection.
Overload protection for the motors is achieved via current limiters in the electrical
control panel.
Prior to start-up, each fan motor should be checked for freedom of movement and that
the fan blade is securely fastened to its fan motor shaft. All motors have been
synchronized at the factory. Pump and fan direction of rotation must be checked at the
initial power up of the pump module and heat exchanger. Verification of pump and fan
rotation is outlined in "Section 2.11.1.1” on page 2-38.
!
CAUTION:
INCORRECT (REVERSE) ROTATION OF THE PUMPS OR FANS WILL CAUSE POOR
COOLANT OR AIR FLOW AND DAMAGE TO THE PUMPS. CORRECT PUMP OR FAN
ROTATION BY SWITCHING ANY TWO INCOMING AC PHASES. DO NOT ALTER ANY
PANEL WIRING TO CHANGE PUMP OR FAN DIRECTION
Fans and motors are direct connected. Motors are permanently lubricated for the life of
the motor. Use compressed air (low pressure) to clear dust and debris from the coil. Fin
material is sensitive; DO NOT WIRE BRUSH! Mild cleaning solution or low pressure
steam cleaning may be used to clean the unit.
All pumps have maintenance-free pump seals.
NOTE:
Job site environmental conditions should be evaluated periodically to assure coil
and component life expectancy. Schedule maintenance activities to accommodate
changing environmental conditions at the site.
STEP 1 Turn the AC mains to the transmitter cabinets and pump module
OFF at the main breaker or fuse box. Also turn off the isolator
switches at the front of the cooling control panel and on the heat
exchanger.
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