MNL_Standard-NoSpecs_ACWC-18to240-E-_(0713).docx
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c.
Also, some temperature thermostats may
need to be adjusted.
17.
PUMP
(Depending on design)
a.
Systems with integral pump are typically
setup to provide recirculating fluid for the
chiller and some flow is routed for the process
system. Refer to the unit’s actual design for
details.
b.
A secondary pump may be used for process
specific applications, referred to as Process
Pump.
18.
TANK
(Depending on design)
a.
Systems with integral tank will typically be
304 Stainless Steel with Open Top with
Shoebox Type Lid, Fluid Level Sight glass, Fill
Port, & Drain Plug.
19.
HEAT EXCHANGER
(Depending on design)
a.
A heat exchanger is used to transfer heat
typically from the chiller fluid circuit to a
separate process fluid circuit.
20.
SWITCHOVER SYSTEM (CHILLER BYPASS)
(
OPTIONS
)
a.
Manual City Switchover (MCSO) (Option)
a)
System valves which can be aligned to a
backup water supply system such as the
city water supply. Outlet fluid flow is
normally routed to the building’s drain
system. Valves are connected and must
be actuated simultaneously or in the
proper series to operate properly.
Converting back is normally performed in
the reverse order.
b.
Automatic City Switchover (See ACSO
literature)
a)
System has electrically operated valves
similar to MCSO, however it can be setup
to change automatically based on a
system safety situation.
21.
TANK LEVEL
(OPTIONS)
a.
Float Valve
a)
Located inside the tank, the float valve is
a mechanically float-actuated valve
supplied with a makeup water source of
fluid for the tank.
b)
The makeup water (such as city water
supply) is connected to the pipe
connection on the outside of the tank.
c)
Water pressure, typically, must be less
than 30psi.
d)
When the level falls below a certain level,
the valve will open and fill the tank.
When it reaches the top setting
adjustment, the valve closes.
e)
If the valve does not maintain level:
a)
Verify water pressure supply.
b)
Verify the float adjustment.
c)
Verify the mechanical linkages are
free to move.
d)
Verify there is no dirt or debris on
the valve seat.
b.
Tank Level Float Switch and Solenoid Valve
a)
A float actuated switch mounted in the
tank to monitor when tank is at different
levels depending on design:
a)
Low Tank Level- tank is at the low
level point that will begin filling the
tank.
b)
High Tank Level- level in tank is at or
near top of tank and may overflow.
c.
Tank Level Switches
a)
Tank level switches may be mounted in
the tank as needed for various
applications for Safety or Notification
purposes.
a)
Safety – to stop the operation of
something such as the chiller or
pump.
b)
Notification – to provide a signal for
notification for manual refill or that
another action must be performed.
c)
Action – to provide signal for use
with other system uses such as
automatic fill systems.
