Benchmark with Edge [I]: Operation-Maintenance Manual
SECTION 5
– SAFETY DEVICE TESTING
OMM-0145_A99
• GF-218 • 9/18/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page
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of
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5.4 LOW WATER LEVEL FAULT TEST
To simulate a low water level fault, proceed as follows:
LOW Water Fault Test Instructions
1.
Set the
Controller’s
Enable/Disable
switch to
Disable
.
2.
Close the water shut-off valves in the supply and return piping to the unit.
3.
Slowly open the drain valve on the rear of the unit. If necessary,
the unit’s relief valve may be
opened to aid in draining.
4.
Continue draining the unit until a
Low Water Level
fault message is displayed and the FAULT
indicator flashes.
5.
On the Controller, go to:
Main Menu
→
Diagnostics
→
Manual Mode
.
6.
Enable the
Manual Run
control.
7.
Raise the valve position
above 30%
using the
+
(Plus) and
–
(Minus) controls.
8.
Set the
Controller’s
Enable/Disable
switch to
Enable
. The
READY
light should remain off and the
unit should not start. If the unit does start, shut the unit off immediately and refer fault to qualified
service personnel.
9.
Close the drain and pressure relief valve used in draining the unit.
10.
Open the water shut-off valve in the return piping to the unit.
11.
Open the water supply shut-off valve to the unit to refill.
12.
After the shell is full, press the
LOW WATER LEVEL
– RESET
button to reset the low water cutoff.
13.
Press the
CLEAR
button to reset the
FAULT
LED and clear the displayed error message.
14.
Set the
Enable/Disable
switch to
Enable
. The unit is now ready for operation.
