CH1500, CH2000 & CH3000 Chiller Operator’s & Installation Manual
Publication Number: 621055837OPR - 10 - © 2010-2014, Cornelius Inc.
MAINTENANCE
Disconnect power to the unit before servicing. Follow all lock out/tag out procedures established by the user. Verify all
power is off to the unit before performing any work.
Failure to comply could result in serious injury, death or damage to the equipment.
The chiller requires very little normal maintenance.
1 On air-cooled chillers, the condenser fins should be cleaned by blowing compressed air through the con-
denser from the fan side as required to eliminate any dirt or debris that may accumulate over time. This can
severely reduce the performance of the chiller. Cleanable air filters are available as an option. Contact the
Technical Service Department for information.
2 On AIR-COOLED Chillers the condenser fan motor should be lubricated every 6–month with a few drops of
SAE10 oil.
3 The circulation system should be drained and flushed periodically to avoid build-up and possible restriction
of flow by contaminates.
4 The strainer at the Chiller inlet should be removed and cleaned monthly (field installed).
FLUID RECOMMENDATIONS
Chillers are designed to operate with water to provide maximum performance for temperatures of 50
o
F – 100
o
F.
Table 2.
Distilled Water Acceptable
De-Ionized Water (1-5 MEG/OHMS) Acceptable
De-Ionized Water (5+ MEG/OHMS)
Acceptable with Stainless Steel & PVC only
*No Copper or Brass
Propylene Glycol (Lab & Industrial Grade)
Acceptable - 30% Glycol/70% Water
*For Applications with temperatures below 40
o
F
Lab & Industrial Grade Ethylene Glycol
Acceptable - 30% Glycol/70% Water
*For Applications with temperatures below 40
o
F
Mineral/Hydraulic Oils (Viscosity < 50 Centistrokes) Acceptable
Ethylene Glycol (Commercial/Automotive Anti-freeze)
NOT Acceptable
*Silicate Rust Inhibitors in automotive/commercial anti-
freeze damages pump seals and housing which lead to
failure.
Acidic/Basic Solutions (Above & below 6 PH) Not Acceptable
Mineral/Hydraulic Oils (Viscosity > 50 Centistrokes) Not Acceptable
For questions regarding special or other fluids contact Cornelius at 800-238-3600
To purchase lab or industrial glycol contact: Cornelius (800) 551-4423 - Part # 111521000, 5 Gal.
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