Digital Alarm Switch Checks And Adjustments - Watts Aerco Benchmark BMK750 Operation And Service Manual

Benchmark with Edge [I]: Operation-Maintenance Manual
SECTION 4 – INITIAL START-UP
Figure 4-11c: BMK5000-6000 Over-Temperature Limit Switch Location

Digital Alarm Switch Checks and Adjustments

4.8.1
The Over-Temperature Alarm switch settings can be checked or adjusted using the controls
and display on the front panel of the switch illustrated and described in Figure 4-12 and
Table 4-9.
Figure 4-12: Digital Over-Temperature Alarm Switch Front Panel
TABLE 4-9: Over-Temperature Alarm Switch Controls and Display
CONTROL/DISPLAY
LED Display
RST
SET
Perform the following steps to check or adjust the Over-Temperature Alarm switch settings:
Over-Temp Alarm Switch Check and Adjustment Instructions
1. Set the Enable/Disable switch to the Enable position.
2. Press the SET button on the Over-Temperature Alarm switch. SP will appear in the display.
3. Press the SET button again. The current over-temperature limit value stored in memory will
be displayed. (Default = 210°F, 98.9°C).
4. If the display does not show the required over-temperature alarm setting, press the ▲ or ▼
arrow button to change the display to the desired temperature setting.
OMM-0145_D • GF-218 •
11/2/2020
Alarm
Limit Control
MEANING
TEMP status Displays current water temperature or setpoint.
RESET Button Resets the unit after an alarm condition.
UP Button Increases the displayed temperature.
DOWN Button Decreases the displayed temperature.
SET Button Used to access and store parameters in the unit.
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
DIGITAL OVER-TEMPERATURE
LIMIT CONTROLLER
ADJUSTABLE TEMPERATURE
LIMIT SWITCH (AUTO-REST)
RESET BUTTON FOR MANUAL
TEMPERATURE LIMIT SWITCH
MANUAL TEMPERATURE LIMIT
SWITCH
F
RST
SET
FUNCTION
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