Supplementary application data, Table 9 room dew point temperatures, Table 10 glycol concentration at various ambients – Liebert EMERSON 60 HZ User Manual
Page 18: Table 11 volume in standard tube, Maintenance guidelines, Important, Upplementary, Pplication, Aintenance, Uidelines
14
S
UPPLEMENTARY
A
PPLICATION
D
ATA
Table 9
Room dew point temperatures
Dry bulb
°F (°C)
Wet bulb
°F (°C)
Rel. hum.
%
Dew point*
°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
by volume
0
10
20
30
40
50
Freezing
point °F
32
25
16
5
-10
-32
Apparent
specific
gravity
@50°F
1.000 1.014 1.028 1.042 1.057 1.071
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)
M
AINTENANCE
G
UIDELINES
Restricted airflow through the
drycooler coil will reduce the oper-
ating efficiency of the unit and
can result in high fluid tempera-
tures and loss of cooling.
Clean the drycooler coil of all
debris that will inhibit air flow.
This can be done with compressed
air or commercial coil cleaner.
Check for bent or damaged coil
fins and repair as necessary. In
winter, do not permit snow to
accumulate around the sides or
underneath the drycooler.
Check all fluid lines and capillar-
ies for vibration isolation. Support
as necessary.
Visually inspect all fluid lines for
signs of fluid leaks.
Inspect the motor/fan assembly to
insure bearings are (free) and
motor is secure within the mount.
The glycol in drycooler systems
level must be periodically
checked. At the high point of the
system check:
•
For positive pressure.
•
For air to be vented.
•
For an unlogged expansion
tank. A fluid sample for
proper concentrations of anti-
freeze and inhibitors.
The first three checks may give
indication of leaks in the system.
Important
When ordering replacement parts
for heat rejection equipment, it is
necessary to specify unit model
number - serial number - voltage.
Enter this information below for
future use.
Model No.
Serial No.
Voltage