Baltimore Aircoil Company V Series Operating And Maintenance Instructions Manual

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Series
®
CLOSED CIRCUIT COOLING TOWERS
EVAPORATIVE CONDENSERS
Operating and
Maintenance Instructions
B
altimore Aircoil Company Series V equipment
has been designed to give long, trouble-free
service when properly installed, operated, and
maintained. To obtain optimum performance and
maximum service life, it is important that a program of
regular inspection and maintenance be developed and
carried out. This bulletin is published as a guide to
establishing such a program.
Included in the bulletin are the recommended services
for start-up, operation, and shutdown and the approxi-
mate frequency for each. Note that the recommen-
dations on frequency of service are minimums and
where operating conditions are severe, the services
should be performed more often. For each required
service, follow the procedures outlined under the
"Maintenance Procedures" section of this bulletin. The
VT1, VTO, VTL, VF1, VFL, VC1, VC2, and VCL models
are illustrated in a cutaway form on page 2, 3, 4 and 5
with the major points of inspection and service identi-
fied. A copy of the unit certified drawing should also be
available for reference. If you need additional informa-
tion about the operation or maintenance of this equip-
ment that is not covered in this bulletin, contact the local
B.A.C. Representative. Their name and telephone
number are on a label at the connection end of the unit.
& Low Profile
COOLING TOWERS

Table of Contents

Construction Details . . . . . . . . . . . . . . . . . . .
Operation and Maintenance . . . . . . . . . . . .
Initial and Seasonal Start-Up . . . . . . . . . .
After 24 Hours . . . . . . . . . . . . . . . . . . . . .
Seasonal Shutdown . . . . . . . . . . . . . . . . .
Maintenance Procedures . . . . . . . . . . . . . . .
Cold Water Basin . . . . . . . . . . . . . . . . . . .
Make-Up Valve . . . . . . . . . . . . . . . . . . . . .
Fan Shaft Bearings. . . . . . . . . . . . . . . . . .
Fan Motor Bearings . . . . . . . . . . . . . . . . .
Locking Collars . . . . . . . . . . . . . . . . . . . .
Adjustable Motor Base. . . . . . . . . . . . . . .
Fan Belt Adjustment . . . . . . . . . . . . . . . . .
Fan Drives . . . . . . . . . . . . . . . . . . . . . . . .
Heat Transfer Section . . . . . . . . . . . . . . . .
Corrosion Protection. . . . . . . . . . . . . . . . .
Cold Weather Operation . . . . . . . . . . . . . . .
Water Treatment . . . . . . . . . . . . . . . . . . . . . .
Corrosion & Scale Control . . . . . . . . . . . .
Biological Control . . . . . . . . . . . . . . . . . . .
Factory Authorized Parts . . . . . . . . . . . . . . .
Baltimore Aircoil
®
S
E
R
I
E
S
Page
2-5
6
7
7
7
7
8
8
8
9
10
10
10
11
11
11
12
12
14
14
15
15
BULLETIN M310/1-OIA

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Summary of Contents for Baltimore Aircoil Company V Series

  • Page 1: Table Of Contents

    • • • • • Series & Low Profile ® COOLING TOWERS CLOSED CIRCUIT COOLING TOWERS EVAPORATIVE CONDENSERS Operating and Maintenance Instructions altimore Aircoil Company Series V equipment Table of Contents Page has been designed to give long, trouble-free Construction Details ....service when properly installed, operated, and Operation and Maintenance Schedule .
  • Page 2: Construction Details

    ELIMINATORS SPRAY NOZZLES WET DECK SURFACE CASING Basin Section FAN DISCHARGE COWLS HEAVY DUTY CONSTR. WATER MAKE-UP VALVE ADJUSTABLE FLOAT ACCESS DOOR FAN HOUSING STRAINER SCREENS MOTOR & DRIVES AIR INLET VANES FAN SHAFT & BEARING ©1987 Baltimore Aircoil Company...
  • Page 3 Construction Details SERIES V MODEL VF1 CLOSED CIRCUIT COOLING TOWERS MODEL VC1 EVAPORATIVE CONDENSERS Heat Transfer Coil Section SPRAY NOZZLES ELIMINATORS CASING COIL SPRAY NOZZLES Basin Section FAN DISCHARGE COWL WATER MAKE-UP VALVE ASSEMBLY ADJUSTABLE FLOAT ACCESS DOOR STRAINER WATER PUMP WATER BLEED LINE FAN HOUSING SCREENS...
  • Page 4 Construction Details SERIES V VC2 EVAPORATIVE CONDENSERS Heat Transfer Coil Section ELIMINATORS SPRAY NOZZLES CASING COIL SPRAY NOZZLES Basin Section WATER MAKE-UP VALVE ASSEMBLY TWO-STAGE AXIAL-FLOW FAN ACCESS DOOR FAN BALL BEARING ADJUSTABLE FLOAT SPRAY WATER PUMP WATER BLEEDLINE FAN SCREEN FAN DRIVES BASIN SECTION FOR MOTOR BASE ADJUSTMENT...
  • Page 5 Construction Details LOW PROFILE SERIES V MODEL VTL COOLING TOWERS ELIMINATORS AIR INLET RING WATER DISTRIBUTION SYSTEM FAN SHAFT AND BEARING FAN MOTOR WET DECK SURFACE STRAINER ASSEMBLY WATER MAKEUP VALVE MODEL VFL CLOSED CIRCUIT COOLING TOWERS MODEL VCL EVAPORATIVE CONDENSERS ELIMINATORS COIL SPRAY NOZZLES...
  • Page 6: Operation And Maintenance Schedule

    Operation and Maintenance Schedule TABLE 1. Recommended Maintenance Services for Series V and Low Profile Series V Equipment. Every Six TYPE SERVICE Start-Up Monthly Shutdown Annually Ref. Page Months Inspect General Condition of Unit Clean Debris from Unit Clean and Flush Basin Clean Basin Strainer Check and Adjust Basin Water Level Inspect Heat Transfer Section...
  • Page 7: Operation And Maintenance

    Operation and Maintenance INITIAL AND SEASONAL START-UP: 14. Check the voltage and current of all three legs of the fan and pump motors. The current should not Prior to initial start-up or after a shut down period, the unit exceed the nameplate rating. After prolonged shut- should be thoroughly inspected and cleaned: downs, the motor insulation should be checked with a megger insulation tester prior to restarting the motor.
  • Page 8: Maintenance Procedures

    Maintenance Procedures COLD WATER BASIN Profile Series V equipment unless the unit has been ordered with the optional electric water level control pack- The cold water basin should be inspected regularly. Any age or for remote sump application. It is located inside the trash or debris which may have accumulated in the basin unit cold water basin within easy reach from the access or on the strainers should be removed.
  • Page 9: Fan Shaft Bearings

    Maintenance Procedures (continued) As an option, an electric water level control package is available in lieu of the above described mechanical make- up assembly. The package consists of a probe-type liquid level control assembly and a slow closing solenoid valve. LUBE FITTING Stainless steel electrodes, factory set at predetermined...
  • Page 10: Fan Motor Bearings

    Maintenance Procedures (continued) DRIFT (A) TAP THE LOCKING COLLAR IN DIRECTION OF FAN ROTATION (B) TIGHTEN SET SCREW AFTER CAM IS LOCKED OIL CUP DIRECTION OF ROTATION Figure 4 – Locking Collar Assembly ADJUSTABLE MOTOR BASE: The motor base slides and adjusting screw (See Figure 5) should be coated twice a year using a good quality corro- sion inhibiting grease such as one of those recommended Figure 3 –...
  • Page 11: Fan Belt Adjustment

    FAN DRIVES ADJUSTING The drive alignment should be checked annually to SCREW ensure maximum belt life. This can be done by placing a straightedge across both sheaves as shown in Figure 6. When the drive is properly aligned, the straightedge will contact all four points as indicated.
  • Page 12: Corrosion Protection

    Maintenance Procedures Inspect the inside of the unit for blemishes or corrosion on (continued) the galvanized steel. Affected areas should be thoroughly wire brushed and recoated with zinc-rich compound (ZRC). BALTIBOND ® Corrosion Protection System SPRAY The Series V and Low Profile Series V units can be con- NOZZLE structed of hot-dip galvanized steel, protected with the BALTIBOND ®...
  • Page 13 CAPACITY CONTROL WARNING: Before performing any maintenance or inspection, make certain all electric power has been It is necessary to prevent the recirculating water from disconnected and locked in the off position. approaching freezing conditions when the unit is operating under load. Capacity control on centrifugal fan Maximum Allowable Wire Runs: The VFD should be units may be achieved through fan cycling, capacity con- located as close as possible to the inverter duty motor.
  • Page 14: Water Treatment

    Water Treatment can be adjusted using the valve in the bleed line and measured by filling a container of known volume while noting the time period. The bleed rate and water quality CORROSION AND SCALE CONTROL should be periodically checked to ensure that ade- In Evaporative Cooling Products, cooling is accomplished quate control of the water quality is being maintained.
  • Page 15: Biological Control

    IOBIO ‚ Bacteria, Slime and Algae Control. The control is easy to use and requires lit- Baltimore Aircoil Company maintains a stock of replace- tle maintenance. By delivering low concentrations of ment parts at each of its manufacturing facilities.
  • Page 16 Baltimore Aircoil P.O. Box 7322, Baltimore, Maryland 21227 410-799-6200 Fax 410-799-6416 www.BaltimoreAircoil.com ® email: info@BaltimoreAircoil.com Printed in the U.S.A. SEN-10M-09/00 Printed on Recycled Paper...

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