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(©October, 2006)
CyberChiller Series Installation, Operation & Maintenance Manual
2-9
2.7 System Settings and Adjustments
2.7.1 Chilled Water Supply Charging
Procedures (Evaporator Side)
2.7.1.1 Pump Start-Up
Fill the system with potable water before turning the
pump on. These pumps are not self-priming, so it is
important that there is a pressure on the suction inlet.
CAUTION
Do not run the pump dry.
If the pump has no pressure on the discharge side,
leave the discharge valve partially shut to create a
back pressure in the pump so that liquid volume can
build up in the impeller housing to keep the impeller
housing from getting too hot. Make sure there is
always liquid leaving the pump, indicating that there is
flow in the pump to cool the impeller and housing. If
there is no flow shut the pump off immediately to
prevent damage to the pump. Check for proper rotation
of the motor observing the arrow on the side of the
impeller.
CAUTION
The pumping system of the CyberChiller is
designed for use with a positive suction head.
At no point should the system be operated for
an extended period of time with less than 5 to
10 psig at the pump inlet pressure fitting.
NOTE
The piping system must be clean prior to
operating the system
1. Connect the water source to the drain valve hose
bib.
Figure 8- Interconnecting Field Wiring Glycol Systems
(
TO BE INSTALLED IN ACCORDANC
E
(
GLYCOL UNITS ONLY
)
24VA
C
G
P
S
P
U
MP PA
C
KA
GE
B
OX
WITH NFPA 70, N.E.C.
)
INTER
CO
NNE
C
TIN
G
FIELD WIRIN
G
M
AIN P
O
WER
SU
PPLY
2
08
-
5
7
5
V
/3
PH
/60
H
z
(
GLYCOL UNITS ONLY
)
DRY
COO
LE
R
2
08
-
5
7
5
V
/3
PH
/60
H
z
M
AIN P
O
WER
SU
PPLY
IN A
CCO
RDAN
C
E WIT
H
INTER
CO
NNE
C
TIN
G
FIELD
WIRING
(
TO BE INSTALLE
D
NFPA 70, N.E.C.
)