Caring for Product
1. Repair - Do not attempt to repair the product or modify the circuitry by yourself. Please contact your
local dealer or a qualified repairman if the product needs servicing, including the replacement or
calibration of sensor.
2. Note: The oxygen sensor must be replaced every 3 years.
3. Cleaning - Disconnect the power before cleaning. Use a damp cloth. Do not use liquid cleaning agents
such as benzene, thinner or aerosols, as these will damage the device.
4. Maintenance
– We recommend users to test the communication between the SEU and RDU under
‘DIAG” function to verify the working conditions or the SEU and RDU. If the four LED’s blink and the
buzzer of SEU and RDU sound simultaneously, it indicates that SEU and RDU work normally.
When the LCD di
splays a safety icon “ESC”, please take immediate protective action to check if CO2
leakage has occurred. We suggest users to do the calibration and thorough function check once within
two years to make sure that the ZGa21 CO2 and O2 Monitor is working properly.
Installation Instruction
Please carefully take out the SEU (Sensor Unit), RDU (Remote Display Unit), panel holders, network cable
connector,7 meters communication cable, user manual, plug lock, screws,expansion plugs, nail cable clips,
warning paper from the package.
Step-by-Step Installation:
1.
Choose a suitable location to install the SEU. Fix the panel holder on the wall with the four screws
(included); the recommend installation height is about 0.45 meters (1.5 feet) from floor and close to the
manifolds and valves as possible.
2.
Put the SEU on the panel holder, making sure that they are connected tightly.
3. Fix another panel holder in a suitable location outside the monitored space with screws (included). Push
the RDU onto panel holder, and stick the warning paper next to RDU.
4. The communication cable is pre-wired to the SEU. Route the cable to the RDU and fixed the
communication cable to the wall by nail cable clips, and then plug the cable into the input port on the
RDU. Communication is now ready between the SEU and RDU.
5.
The ZGa21 CO2 and O2 Monitor has two relay output: one is for CO2 and the other is for O2. The relay
cable is pre-wired to SEU. The relay can control a fan or blower to ventilate the monitored space when
necessary and the relay will be triggered when the CO2 concentration exceeds the first alarm level or
O2 concentration drops the first alarm level.
6.
After finishing the installation, Connected the AC power adapter into the electrical supply outlet. Mount
the Plug lock by expansion plugs so that the power adapter cannot be disconnected without use of
mechanical tools.
7.
When the power has been connected, The SEU and the RDU will begin to work. Please use the “DIAG“
function to verify the communication between SEU and RDU, the four LED’s will blink and buzzer will
sound on SEU & RDU, after that the communication is ready, the content of display is same on SEU &
RDU.
