Benchmark Platinum-Edge: Operation-Service Manual
SECTION 5 – SAFETY DEVICE TESTING
OMM-0137_D • GF-211
•
7/16/2019
Technical Support
•
(800) 526-0288
•
Mon-Fri, 8 am - 5 pm EST Page 62 of 146
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
Run
.
6. Enable the
Manual Mode
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.
