5-7
4.  Discharge the water from the discharge port on the cooling water inlet. 
5.  Keep the discharge port open during shut down. 
 
(2) Chilled water 
Keep the evaporator full with the water. (Wet lay up)   
 
(3) Hot water 
Keep the generator full with the water. (Wet lay up)   
 
  5-3-3. Winter season 
In case the ambient temperature of the Chiller is likely to be below 0℃, freeze protection is 
necessary. 
Consult the service agent for details. 
 
5-4. RECOMMENDED SCHEDULE FOR MAINTENANCE   
AND REPLACEMENT OF MAIN COMPONENTS 
 
Parts 
division 
Name of Parts  Replacement timing  Replacement cycle
Water 
line 
Gasket of water line  After opening   
Partition plate of water box  If necessary   
Heat transfer tubes  Based on inspection result   
Body parts 
Heat exchanger  If necessary   
Absorbent ,Refrigerant  Based on inspection result   
Refrigerant pan  If necessary   
Service valve spindle  Periodic replacement  6 years 
Sight glass & packing  Periodic replacement  6 years 
Diaphragm packing  Periodic replacement  6 years 
Diaphragm valve  If necessary   
Palladium cell  Periodic replacement  3 years 
Palladium cell heater  Periodic replacement  3 years 
Rupture disc  Periodic replacement  annual 
Angle valve  If necessary   
Check valve  If necessary   
Damper If necessary  
Purge unit (ejector unit)  Periodic replacement  8 years 
Pump 
Absorbent pump (#1 / #2)  Periodic replacement  10 years / 20,000h 
Refrigerant pump  Periodic replacement  10 years / 20,000h 
Purge pump  If necessary   
Control devices 
Inverter(option)  Periodic replacement  5 years 
Fan for inverter(option)  Periodic replacement  3 years 
Reactor for inverter(option)  If necessary   
Electromagnetic contactor  Periodic replacement  5 years 
Circuit breaker  If necessary   
CPU, indicator, IO, power board  Periodic replacement  7 years 
Control relay  Periodic replacement  5 years 
Timer  Periodic replacement  5 years 
Cooling fan  Periodic replacement  5 years 
Generator temp. sensor  If necessary   
Temp. sensor  If necessary   
Pressure sensor  Periodic replacement  5 years 
Flow switch  Periodic replacement  8 years 
Transformer If necessary  
 
These replacement cycle have been assumed in consideration of performing a periodic maintenance.