Gardner Denver VS80A, Operating And Service Manual

Page: 57 / 88

13-18-609 Page 56
6-1
SECTION 6
HEAT EXCHANGERS (OIL, AIR), AXIAL COOLING FANS
Compressor, air/oil sump and all piping and tubing may be at high temperature during
and after operation.
Do not attempt inspection or cleaning of air cooled heat exchangers until cooling fan
has stopped rotating. Disconnect, lockout and tagout package from power supply.
Automatic restarting or electrical shock can cause injury or death. Disconnect, lockout
and tagout package from the power supply.
OIL/AIR HEAT EXCHANGERS –
The heat of compression absorbed by the oil injected into the
compressors (for cooling and lubrication) is ultimately rejected in a convenient medium such as air (for air
cooled cores) or water (for water cooled cores). Proper operation of these heat exchangers is essential
for the following processes:
·
The compressors require a stable, cool (140
°
F typical at 80
°
F ambient air) supply of injection oil in
order to operate at optimal efficiency. Under these conditions, the oil core allows 29 gpm oil flow with
9.0 psid pressure loss (VS110 @ 100 psig discharge pressure).