PURELAB flex
Section 7 - Appendix
Issue 4
Page
42
of
45
Appendix B
Routine Service Report
Site History and Observations:
General Questions - Site Related
Yes
No
Concerns?
Review Service History
Review Customer's Operation Log
Query lab manager/users about unit's operation
VISUAL Check of unit's location/connections
Yes
No
Corrected?
Is the unit clear of obstruction?
Is there space for the front doors to open fully and still have space
to service the unit?
Is there clear access to feed water shut-off valve?
Is there clear access to any pre-treatment components?
Has anything changed since the initial commissioning that is not
documented?
Feed Water Chemistry
Take water chemistry samples from the pre-purified water source, on-site chemistry test can be done
while unit is being sanitised.
Feed Water Parameters
minimum
maximum
recorded
adjusted
Conductivity
1 µs/cm
Temperature
4°C
40°C
Chlorine (free)
< 0.05 ppm
Carbon Dioxide
< 0.1 ppm
Organics (TOC) PURELAB flex 2 only
< 20 ppb
Feed Water:
Measure Flow Rate and Pressures at the inlet of the system after any pre treatment (if fitted) also
check the setting of the inlet pressure regulator. Direct the water to drain. Record the pressure at
maximum system flow rate. Adjust the feed water regulator to 2.5 bar (36 psi) dynamic not static
flow.
Facility Check - Feed Water
minimum
maximum
recorded
adjusted
Pressure
Flooded Suction 1.5 bar (21 psi)
Outlet Parameters
SERVICE ITEM - Distribution Quality, Temperature
nominal
recorded
adjusted
Product Resistivity (MΩ-cm) measured at dispense outlet
Product Resistivity (MΩ-cm) displayed (QS2)
Product Temperature (°C) measured at dispense outlet
Product Temperature (°C) displayed (TS2)
Product Flow Rate measured at dispense outlet
Up to 2 L/min
System Menu
