Hussmann Proto-Aire Installation Manual page 121

1. Check freezing point of glycol in closed loop; add water or glycol as required.
2. Replace Liquid, Oil, and Suction Filters.
3. Check the Alarm functions on the pumping station. The low fluid pressure, high
fluid temperature, and automatic pump switching functions should be checked.
4. If equipped with air-cooled condenser, inspect and clean as necessary.
Every Two Years
Sample the closed loop fluid and have it analyzed. If this fluid contains a Dow product
(Dowtherm or Dowfrost), Dow can perform the analysis. Call Dow at 1-800-447-4369 and
ask for a fluid sampling kit.
Use only Mobil EAL Arctic 22 CC, ICI Emkarate RL 32CF, OR Copeland Ultra
22 CC.
Turba-Shed is shipped without oil charge.
Oil Levels
Compressor – top half of the sight glass.
Turba-Shed – between two sight glasses.
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Protocol™ Installation and
Service Manual