14
6-Series Testing
General
The Macurco MRS-485 adapter converts the 4-20mA analog signal from Macurco 6-Series type detectors to a digital signal for use
with multipoint addressable systems. The 6-Series test procedures may be used to ensure that the MRS-485 accepts the 4-20mA
output for the Modbus communications. All 6-Series detectors are factory calibrated and 100% tested for proper operation. The units
also perform a regular automatic self-test during normal operation. If the unit detects an improper voltage or inoperable component,
it will default into Error mode. In this error mode, the Fan and Alarm relays will be activated, the 4-20 mA output will go to 24 mA, the
unit will display the error code and the buzzer will chirp intermittently.
Operation Test
Normally this will be the only test required for the 6-Series detectors and is the recommended way to test the unit or units after
installation. Check that the green detector operating LED light is illuminated continuously. If not, do not proceed with the tests. If the
unit is in error mode contact your local representative or Macurco technical service representative for information on resolving the
problem.
1.
Remove the single screw in the middle of the front cover of the 6-Series detector.
2.
Remove the front cover.
3.
Observe the LED light on the front of the 6-Series detectors.
4.
If the light is solid green proceed to step 6.
5.
If the light is off or flashing Green, refer to the General section above.
6.
Locate the switch labeled ENTER/TEST on the left side of the printed circuit board. Press the Test switch once.
7.
The 6-Series detector will step through a cycle test:
a.
The display progresses through the bUZ (Buzzer Test) Art (alarm relay test), Frt (fan relay test) then 42t (4-20 mA output
test).
b.
Make sure that the settings are “on” or not disabled “diS”.
c.
During the first 10 seconds of the test cycle, the display will show BUZ and set off the audible buzzer
d.
The alarm relay will be closed, so any devices connected to that relay will be tested.
e.
The Fan relay will be activated for the next 1 minute of the test, so if the fan circuits are wired in the normal manner, the fan
should run.
f.
The 4-20mA output will then ramp up from 4 to 16 mA over the next 130 seconds of the test, so if the circuit is wired in the
normal manner, the control panel or building automation system should respond.
g.
At the end of the test cycle, the light will turn green and be on steady (Normal Operation), the fan & alarm relay will be in
standby mode and the 4-20 mA output will return to 4 mA (in clean air).
8.
When testing is completed reassemble the unit or units.
