Water Quality Control - York EX Series Installation, Operation & Maintenance Instructions Manual

SECTION 7 – MAINTENANCE
TABLE 27 - LIFESPAN OF COMMON PARTS (CONT'D)
DESCRIPTION
Differential Pressure Switch
Pressure Switch
Pressure Sensor
Resistance Temp. Sensor
Thermocouple
Float Switch
Exhaust Gas Temp. Switch
Electrode (HG Sol Level Sensing)
Bearing for Sol. Circulation Pump
Sol. Circulation Pump
Bearing for Sol. Spray Pump
Sol. Spray Pump
Bearing For Refrigerant Pump
Refrigerant Pump
Vacuum Pump
Pump Shut Off Valve(Option)
Pressure Release Valve
Purge Solenoid Valve
Refrigerant Blow Solenoid Valve
Float Valve
Float Valve
Three-Way Valve (Option)
Compound Gauge
Vacuum Gauge
Rubber Hose Set For Purge Line
Oil For Purge Pump

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.
150
APPLICABLE MODELS
OR SECTIONS
YPS-C104Q/ 69WC1(69WC2)
63SH1 (69AP1)(69AP2)
PA-830-102A-10
Pt100 Ω
Ref. tank
Ew-3
AB41
AB41
For HG float box
For refrigerant tank
For residential hot water line
ULVAC R-7
LIFESPAN OF
COMMON PARTS
every 30,000 hrs
every 20,000 hrs
every 60,000 hrs
every 20,000 hrs
every 60,000 hrs
every 20,000 hrs
every 60,000 hrs
every 48,000 hrs
every 30,000 hrs
every 60,000 hrs
every 48,000 hrs
every 18,000 hrs
every 3,000 hrs
• 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
• Install an expansion tank on the hot water line if
the hot water is a closed system.
FORM 155.32-ICOM1.EN.GB
ISSUE DATE: 10/13/2017
chiller-heater.
JOHNSON CONTROLS