Note:
After maintenance of the refrigerant pump is complete, reset it to auto. Continued
operation in stop state can cause damage to, and failure of, the chiller-heater.
Lifespan for various parts
The replacement periods for some parts are shown below. The time periods shown in the following
table are for reference only. The replacement period can be changed according to the actual
environment, frequency of use, and other contributing factors. Other parts need to be replaced if
used incorrectly.
Table 34: Lifespan of common parts
Description
Applicable models or sections
Lifespan of common parts
Gasket
CW waterbox
Every 1 year
Gasket, O-Ring, Diaphragm
Every 24,000 hrs
Evaporator Tube
Absorber Tube
Condenser Tube
HT-G Tube
Approximately 15 years. It depends on the eddy
current result at interval 24,000 - 30,000 hrs.
LT-G Tube
Approximately 15 years
Main Circuit Board
Relay
MY-2N, MY-4N
Timer
H3Y-2
Power Unit
RWS series
Magnet Switch
AX series
Every 30,000 hrs
Battery for main circuit board
CR2032
Every 3 years
Battery for touch panel
PFXZCBBT1
Every 5 years
Touch Panel
GP4000 series
Temperature Controller (option) SDC series
Fan for Control Panel
Combustion management
every 30,000 hrs
Flame Detector
Every 15,000 hrs
Gas Pressure Switch
Gas Solenoid Valve
Every 30,000 hrs. Only gas, dual burner
Ignition Transformer
Air Pressure Switch
Control Motor
Spark Rod
Every 30,000 hrs
Main Shut-Off Gas Valve
Every 30,000 hrs. Only gas, dual burner
Burner Fan Motor
Every 30,000 hrs
Differential Pressure Switch
69WC2, 69WC3
Pressure Switch
63SH1 (69AP1)(69AP2)
Pressure Sensor
PA-830-102A-10
Resistance Temp. Sensor
Pt100 Ω
Thermocouple
Float Switch
Solution tank
Exhaust Gas Temp. Switch
Ew-3
Electrode (HG Sol Level Sensing)
Every 30,000 hrs
Bearing for Sol. Circulation
Pump
Every 20,000 hrs
Sol. Circulation Pump
Every 60,000 hrs
Model YHAU-CGN/H-CXR(M)Double Effect Direct Fired Small Absorption Chiller-Heater
158
