Liebert Official Manual for Dry Cooler Models - Supplementary Application Data

Page 18

SUPPLEMENTARY APPLICATION DATA

Table 9

Room dew point temperatures

 

Dry bulb

 

 

Wet bulb

Rel. hum.

Dew point*

°F (°C)

 

 

°F (°C)

 

%

°F (°C)

70

 

 

57.2

 

45

41.1

 

 

 

 

 

 

 

 

 

 

70

 

 

58.5

 

50

50.5

 

 

 

 

 

 

 

 

 

 

72

 

 

58.9

 

45

50.0

 

 

 

 

 

 

 

 

 

 

72

 

 

60.0

 

50

52.4

 

 

 

 

 

 

 

 

 

 

75

 

 

61.2

 

45

52.4

 

 

 

 

 

 

 

 

 

 

75

 

 

62.5

 

50

55.0

 

 

 

 

 

 

 

 

* Minimum glycol temperature before condensation will occur

Table 10 Glycol concentration at various

 

 

ambients

 

 

 

 

 

% Glycol

 

0

10

20

 

30

40

50

by volume

 

 

 

 

 

 

 

 

 

 

 

Freezing

 

32

25

16

 

5

-10

-32

point °F

 

 

 

 

 

 

 

 

 

 

 

Apparent

 

 

 

 

 

 

 

 

 

specific

 

1.000

1.014

1.028

 

1.042

1.057

1.071

gravity

 

 

 

 

 

 

 

 

 

 

 

@50°F

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 11 Volume in standard tube

Type “L” copper tube

Diameter (in.)

Volume

 

 

 

 

 

 

Outside

Inside

Gal/ft

 

(L/m)

 

 

 

 

 

.50

0.430

0.0075

 

(0.09)

 

 

 

 

 

.625

0.545

0.0121

 

(0.15)

 

 

 

 

 

.75

0.666

0.0181

 

(0.22)

 

 

 

 

 

.875

0.785

0.0251

 

(0.31)

 

 

 

 

 

1.125

1.025

0.0429

 

(0.53)

 

 

 

 

 

1.375

1.265

0.0653

 

(0.81)

 

 

 

 

 

1.625

1.505

0.0924

 

(1.15)

 

 

 

 

 

2.125

1.985

0.161

 

(2.00)

 

 

 

 

 

2.625

2.465

0.248

 

(3.08)

 

 

 

 

 

3.125

2.945

0.354

 

(4.40)

 

 

 

 

 

3.625

3.425

0.479

 

(5.95)

 

 

 

 

 

4.125

3.905

0.622

 

(7.73)

 

 

 

 

 

MAINTENANCE GUIDELINES

Restricted airflow through the

Visually inspect all fluid lines for

Important

drycooler coil will reduce the oper-

signs of fluid leaks.

When ordering replacement parts

ating efficiency of the unit and

Inspect the motor/fan assembly to

for heat rejection equipment, it is

can result in high fluid tempera-

insure bearings are (free) and

necessary to specify unit model

tures and loss of cooling.

motor is secure within the mount.

number - serial number - voltage.

 

Clean the drycooler coil of all

The glycol in drycooler systems

Enter this information below for

debris that will inhibit air flow.

level must be periodically

future use.

This can be done with compressed

checked. At the high point of the

 

 

air or commercial coil cleaner.

system check:

 

 

Check for bent or damaged coil

• For positive pressure.

 

Model No.

 

fins and repair as necessary. In

• For air to be vented.

 

 

winter, do not permit snow to

• For an unlogged expansion

 

 

accumulate around the sides or

 

 

tank. A fluid sample for

 

 

Serial No.

underneath the drycooler.

proper concentrations of anti-

 

 

Check all fluid lines and capillar-

freeze and inhibitors.

 

 

ies for vibration isolation. Support

The first three checks may give

 

 

Voltage

as necessary.

indication of leaks in the system.

14

Image 18
Contents Drycoolers 60 Hz Heat Removal /ENVIRONMENTAL ControlPage Table of Contents Figures Liebert Drycoolers No PumpHeat Rejection Module Features and Benefits of Liebert DrycoolersEasy Installation and Service Low Noise LevelDetermining actual Btuh and MBH Selection ProcedureExample Altitude correctionNumber Range Circuits Performance DataNo. PD ft. waterCapacity correction factor Quiet-Line ModelsDimensional Data Drycooler physical data Electrical Data Drycooler electrical dataDrycooler electrical data-Quietline models Guide Specifications Component ASSEMBLY/INSTALLATION APPLICATION/INSTALLATION Guidelines Location GuidelinesPump data Pump Packages & Expansion Tank OptionsExpansion Tank- P/N 1C16717P1 Pump curve, 60 HzVolume in standard tube Maintenance GuidelinesRoom dew point temperatures Supplementary Application DataPage Heat REMOVAL/ENVIRONMENTAL Control United StatesWeb Site Mail

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