Hale ESP Priming System - Manual (Page 15)

15 ESP Primer System Instruction Guide
p/n: 029-0810-01-0
In tro d u ctio n
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Figure 2-4: Typical ESP Lubricated System
The Hale ESP Priming System can be converted to a “lubricated system” by
installing “separate” lubricant and discharge tanks and using a Propylene
Glycol / water mixture as the lubricant. (See Figure 2-4: “Typical ESP Lubri-
cated System.”)
Propylene Glycol is a less toxic and more environmentally-friendly coolant
and is recommended over Ethylene Glycol based antifreeze.Propylene Gly-
col (PG) based antifreeze provides comparable system protection to that of
conventional ethylene glycol (EG) based coolants (i.e., freeze, and corro-
sion protection).
Propylene glycol is readily available in automotive supply stores, under the
following brand names:
❑ Sierra Antifreeze – use a 50 – 50 mix ( www.sierraantifreeze.com )
❑ RV & Marine Easy Going Antifreeze, Camco Mfg. – use pure, DO NOT
mix. (
www.camco.net )
A 50/50 blend of propylene glycol coolant and water has a freezing point of
-26° F (-32° C) and is applicable under most operating conditions.
If a lower temperature protection is required, it can readily be achieved by
increasing the coolant. (See Chart 2-5: “Typical Freeze-Up Protection,” on
page 16.)