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electrical junction box located on the upper rear of the chiller, includes a four–terminal strip for power supply
connections The data plate, located beside the junction box, indicates the actual phase, voltage and amperage for
each chiller.
After the electrical connections are made, power
switched off) to allow the compressor crankcase heater to warm the compressor lubricant.
!
CAUTION:
On three phase applications, it is important that the rotation of the pump, when supplied, is correct. Running the pump
in reverse for more than a few seconds results in permanent pump damage. When the pump is running, shaft rotation
must match the direction indicated on the pump housing. If the rotation is incorrect, reverse two of the three incoming
power supply leads.
P
LUMBING
Follow standard plumbing practices and local codes in making water connections. The chiller inlet and outlet
connections are 1-inch FPT. Flexible hose and fittings are recommended for plumbing the system. A No. 20 mesh
strainer should be installed on the chiller inlet to prevent foreign particles from entering the system and should be
cleaned monthly. Lines should be routed with as few bends as possible. Prevent lines from running near radiators, hot
water pipes, etc. Any lengths of tubing that are exposed to high ambient temperatures should be insulated to prevent
condensation and/or significant liquid heat loss.
Chiller with Reservoir
The reservoir can be filled by removing the water fill cap located on the upper rear of the chiller (See Fluid
Recommendations section). After ensuring that the drain valve is closed, fill the reservoir via the full port with clean
water until the water level sight glass on the front of the unit indicates "FULL" the fill cap should then be reinstalled
before operation begins.
Chiller without Reservoir
The chiller and system piping should be filled with clean water ensuring that all air is purged from the system.
Reservoir
Pump
Figure 2. Chiller Plumbing Schematic with Pump and Tank (Standard)
© 2006-2011, IMI Cornelius Inc.
CH5000 & CH7500 Chiller Operator's & Installation Manual
must
be supplied to the chiller for a period of 12 hours (with control
Low Temp. Control
Evaporator
Bypass Valve
- 5 -
From Process
Chiller Inlet
To Process
Chiller Outlet
Publication Number: 91961OPR
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