Harris Maxiva ULX, Technical Manual

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2-38 888-2629-200 10/6/10
WARNING: Disconnect primary power prior to servicing.
Section 2 Installation
Maxiva ULX COFDM Series
!
CAUTION:
IF FREEZING CONDITIONS EXIST DURING CHECKOUT AND FLUSHING
PROCEDURES, THE FLUSHING PROCEDURE AND SUBSEQUENT FILL WITH FINAL
GLYCOL/WATER MUST BE FINISHED BEFORE STILL WATER IS ALLOWED TO
REMAIN IN HEAT EXCHANGER. IF PROCEDURE CANNOT BE FINISHED, CARE
MUST BE TAKEN TO PREVENT WATER FROM FREEZING IN OUTSIDE COOLING
SYSTEM EQUIPMENT. SHOULD A DELAY BE ENCOUNTERED DURING THE
FLUSHING/CLEANING PROCESS THE HEAT EXCHANGER COULD BE COVERED
WITH A TARP AND HEAT APPLIED FROM AN EXTERNAL SOURCE LIKE A
PORTABLE HEATER (WITH THE PUMP RUNNING) TO PREVENT THE WATER
FROM FREEZING UNTIL FLUSHING CAN BE RESUMED (SEE PARAGRAPH 2.11.1.1,
STARTING PUMPS & CHECKING PUMP ROTATION). IF WATER REMAINS IN
OUTSIDE EQUIPMENT LONG ENOUGH TO FREEZE, THE UNITS WILL BE
DAMAGED. PUMP A MIXTURE OF GLYCOL/WATER INTO OUTSIDE EQUIPMENT
TO PREVENT DAMAGE.
!
CAUTION:
THE USE OF DISTILLED WATER IS SUGGESTED ONLY FOR VERY SHORT TERM
TESTING. THE SYSTEM IS DESIGNED TO OPERATE ON A 50/50 MIXTURE OF
DISTILLED WATER AND PROPYLENE OR ETHYLENE GLYCOL. THE 50/50 MIXTURE
IS REQUIRED FOR PROPER SYSTEM PERFORMANCE. THE GLYCOL/WATER
RATIO SHOULD BE VERIFIED, PREFERABLY WITH AN OPTICAL
REFRACTOMETER.
NOTE:
The system cannot be filled to full capacity at this time. Water must be added as
pumps are run and air is bled from the system. Refer to section 2.11.1.1 before
attempting to energize the pumps. Monitor the sight glass throughout this process
for air bubbles and presence of coolant.
STEP 7
Check heat exchanger fans to be sure they are free to rotate without
obstruction.
2.11.1.1 Starting Pumps & Checking Pump Rotation
It is necessary to verify pump rotation of both pumps. If rotation is incorrect fluid flow
will be low and the pump could be damaged.
!
WARNING:
TO AVOID DAMAGE TO PUMPS, OPERATE THEM FOR 5 SECONDS OR LESS IF
PUMPS ARE RUNNING DRY OR THEIR ROTATION IS INCORRECT.