Maintenance - Samsung RC***MHXGA Installation Manual

Maintenance

Listed checks and inspections shall be implemented regularly so that the unit can operate as design intention in production
site.
Always switch off the unit and remove power cable from the electric source before carrying out any maintenance or repair
works.
Mentioned actions shall be carried out at least once a year by qualified personnel.
1. Water pressure
- Check if the water pressure is above 0.3 bar. If necessary, supplement water.
2. Water filter
- Use water filter which is available for cleaning and clean it regularly.
3. Water pressure relief valve
- Check for correct operation of the pressure relief valve.
• The valve will work over the designated pressure.
• If there is leakage of water or water splashed in normal condition, please contact your local installer.
4. Glycol
- Record and check the glycol concentration and the pH-value in the system at least once a year.
• A Ph-valve below 8.0 indicates that a significant portion of the inhibitor has been depleted and that more inhibitor needs
to be added.
• When the Ph-value is below 7.0 then oxidation of the glycol occurred, the system should be drained and flushed
thoroughly before severe damage occurs.
• Make sure that the disposal of the glycol solution is done in accordance with relevant local and national regulation.
Using Service valve
To Open the Service Valve
1. Open the cap and turn the stop valve counterclockwise by using a
hexagonal wrench.
2. Turn it until the axis is stopped.
• Do not apply excessive force to the stop valve and always use special
instruments. Otherwise, the stopping box can be damaged and the
back sheet can leaks.
• If the watertight sheet leaks, turn the axis back by half, tighten the
stopping box, then check the leakage again. If there is no leakage any
more, tighten the axis entirely.
3. Tighten the cap securely.
To Close the Service Valve
1. Remove the cap.
2. Turn the stop valve clockwise by using a hexagonal wrench.
3. Tighten the axis until the valve reached the sealing point.
4. Tighten the cap securely.
• When you use the service port, always use a charging hose, too.
• Check the leakage of refrigerant gas after tightening the cap.
• Must use a spanner and wrench when you open/tighten the service valve.
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O-RING
Body Cap
SPINDLE