Service manual

26 – 1
Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 1.9
Section 26 • Remote Oil Cooler
Overview
This screen allows the operator to view and adjust
Remote Oil Cooler setpoint settings associated with
Remote Oil Cooler operation, see Figure 26-1. Remote
Oil Cooler Screen (Page 1). This screen will only be ac-
tive if the Remote Oil Cooler Control option has been
enabled from the Confi guration Screen, see Section 19.
The Remote Oil Cooler Control operation allows the cy-
cling of fans and pumps in order to maintain a specifi c
Remote Oil Cooler Temperature. The fi ve different steps
in step control allow selection of fans, pumps and VFD
in one or more steps. When a VFD is employed, VFD is
allowed to reach maximum speed, then if additional ca-
pacity is needed, the next fan or pump is brought on.
The VFD will modulate down and then back up to 100%
again, then the next fan or pump is brought on. This
method allows the smoothest Remote Oil Cooler control
by spacing the VFD between the fan and pump steps,
while maintaining a Remote Oil Cooler Temperature
pressure that matches the setpoint.
Remote Oil Cooler Setpoint
Run Mode:
• Run Mode allows the selection of different modes of
operation for Remote Oil Cooler. The choices for se-
lection are;
Run Never
• The mode of operation by default. Remote Oil Cooler
operation will not be performed when this mode is
active.
Run With Comp
• Automatic operation of Remote Oil Cooler selected
when cooling control is required to only run when the
compressor is running.
Run Always
• Automatic operation of Remote Oil Cooler selected
when cooling control is required to run even when
the compressor is off.
Figure 26-1. Remote Oil Cooler Screen (Page 1)