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A
LARM
C
ONDITIONS
CONT
’
D
UGH017/0500
Series 1 Portable Chillers, PLC Control
T
ROUBLESHOOTING
6-9
Alarm
ALM 02
Flow Fault alarm
Possible cause
The To Process and From
Process valves are closed.
The Process Fluid strain-
er is clogged.
Process fluid level in
reservoir is low and float
switch failed.
The evaporator is fouled.
Pump is not running.
Pump is running back-
wards; no pump pressure
is indicated on pump dis-
charge pressure gauge.
The evaporator is frozen.
Solution
Open/adjust valve(s).
Clean the strainer.
Fill the reservoir. See
Making
Process Plumbing
Connection
s, in the Installation
section.
Clean Evaporator. See
Cleaning the Evaporator or
Water-cooled Condenser
, in the
Maintenance section.
Check overload module. Reset
or replace as needed. See
Replacing Overload Modules
,
in the Troubleshooting section.
Switch any two of the three
main power leads to the pump.
Check for proper percentage of
glycol mixture; adjust as need-
ed (see
Setting Percent Glycol
,
in the Operations section).