JOHNSON CONTROLS
150
FORM 155.32-ICOM1.EN.GB
ISSUE DATE: 10/13/2017
SECTION 7 – MAINTENANCE
DESCRIPTION
APPLICABLE MODELS
OR SECTIONS
LIFESPAN OF
COMMON PARTS
Differential Pressure Switch
YPS-C104Q/ 69WC1(69WC2)
every 30,000 hrs
Pressure Switch
63SH1 (69AP1)(69AP2)
Pressure Sensor
PA-830-102A-10
Resistance Temp. Sensor
Pt100 Ω
Thermocouple
Float Switch
Ref. tank
Exhaust Gas Temp. Switch
Ew-3
Electrode (HG Sol Level Sensing)
Bearing for Sol. Circulation Pump
every 20,000 hrs
Sol. Circulation Pump
every 60,000 hrs
Bearing for Sol. Spray Pump
every 20,000 hrs
Sol. Spray Pump
every 60,000 hrs
Bearing For Refrigerant Pump
every 20,000 hrs
Refrigerant Pump
every 60,000 hrs
Vacuum Pump
Pump Shut Off Valve(Option)
every 48,000 hrs
Pressure Release Valve
Purge Solenoid Valve
AB41
every 30,000 hrs
Refrigerant Blow Solenoid Valve
AB41
Float Valve
For HG float box
every 60,000 hrs
Float Valve
For refrigerant tank
Three-Way Valve (Option)
For residential hot water line
Compound Gauge
every 48,000 hrs
Vacuum Gauge
Rubber Hose Set For Purge Line
every 18,000 hrs
Oil For Purge Pump
ULVAC R-7
every 3,000 hrs
WATER QUALITY CONTROL
Use the following guidelines to be sure of the highest
water quality control standards:
•
Limit the water pressure to the maximum safe
working pressure for chilled/hot and cooling wa-
ter.
• Install a 10-20 or finer mesh strainer in the chilled/
hot and cooling water piping.
•
Install a thermometer and a pressure gauge in the
inlet and the outlet of the chilled/hot and cooling
water piping.
•
Install tapping (with valve) for chemical cleaning
of the inlet and the outlet of the chilled/hot and
cooling water piping.
•
Install an air vent valve at the highest part of the
piping and a drain valve at the lowest part of the
piping.
TABLE 27 -
LIFESPAN OF COMMON PARTS (CONT'D)
•
Replace the water regularly and control the wa-
ter quality. Operating the chiller-heater for long
periods of time with low quality water will cause
corrosion and the production of scale.
•
Make sure the shut off valves installed at the chill-
er-heater inlet of the chilled/hot, and cooling wa-
ter are completely open.
If the chiller-heater runs without the
valves completely open, a strong turbulent
flow can be generated. The turbulence
may cause damage in the water chamber
case and the copper tube of the chiller-
heater. If you need to adjust the flow rate
of the
chilled/hot
and the cooling water,
be sure to adjust the valves installed at the
outlet side of the chiller-he
ater.
•
Install an expansion tank on the hot water line if
the hot water is a closed system.
