44
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, fill a 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.
Adding refrigerant
The Heat Pump unit is provided to users with basic amounts of refrigerants as initial setting values. While using the unit or
doing refrigerant piping works, there can be some loss of refrigerants compared to initial amounts. To run the units properly,
keep the amount of refrigerant which SAMSUNG designated.
Procedures as below is describing how to adding the amount of refrigerant.
t
R-32 Shall be added as liquid phase.
t
Adding and recharging works shall be by Charging Ports.
WARNING
1. Connect the manifold gauge and purge the manifold gauge.
2. Open the manifold gauge valve of the liquid side Charging Ports and add the liquid refrigerant.
3. If you cannot fully recharge the additional refrigerant while the outdoor unit is stopped, use the key on PCB in the Heat
Pump to run for recharging the remaining refrigerant.
