IMM AGS-2
5
Location
Locate the unit carefully to provide proper airflow to the condenser. (See Figure 2 on page
6 for required clearances).
Due to the shape of the condenser coils on the AGS chillers, it is recommended that the unit
be oriented so that prevailing winds blow parallel to the unit length, thus minimizing the
wind effect on condensing pressure and performance. If low ambient temperature operation
is expected, optional louvers should be installed if the unit has no protection against
prevailing winds.
Using less clearance than shown in Figure 2 can cause discharge air recirculation to the
condenser and could have a significant detrimental effect on unit performance.
See Restricted Airflow beginning on page 7 for further information.
For pad-mounted units, it is recommended that the unit be raised a few inches with suitable
supports, located at least under the mounting locations, to allow water to drain from under
the unit and to facilitate cleaning under it
Service Access
Compressors, filter-driers, and manual liquid line shutoff valves are accessible on each side
or end of the unit. The evaporator heater is located on the barrel.
The control panels are located on the end of the chiller. The left-hand control box contains
the unit and circuit microprocessors as well as transformers, fuses and terminal. The right-
hand panel contains a circuit breaker and solid state starter for each compressor plus fuses,
fan VFD (optional) and fan contactors. A minimum of four feet of clearance is required in
front of the panels.
The side clearance required for airflow provides sufficient service clearance.
On all AGS units, the condenser fans and motors can be removed from the top of the unit.
The complete fan/motor assembly can be removed for service. The fan blade must be
removed for access to wiring terminals at the top of the motor.
WARNING
Disconnect, lockout and tag all power to the unit before servicing condenser fan
motors or compressors.
Failure to do so can cause bodily injury or death.
Do not block access to the sides or ends of the unit with piping or conduit. These areas
must be open for service access. Do not block any access to the control panels with a field-
mounted disconnect switches.