Gardner Denver ELECTRA-SAVER II Service Manual page 42

For
water cooled oil systems,
the water flows at various
temperatures outlined in Section 2 will hold the discharge
temperature below the 80° F. ambient temperature level
of Figure 10-5. Small variations in specific water flows or
temperatures will not be noted in the discharge temper-
ature since the water control valve will tend to hold a
constant oil temperature A significant change in the dis
charge temperature is cause to check for a change in water
flow or temperature
Oil Inlet Pressura —
Check at the fitting in the line near
the compressor oil inlet With air receiver pressure at 100
PSI, oil inlet pressure should match values shown in the
following table.
Size
Pressure
125&150 HP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70-80
Oil Cooler Pressure Differential (Air-Cooled Radiator
— 2
to25 PSI (65 to 150 PSIG Receiver Pressure) – Check
at the fitting in the inlet and outlet lines of the oil cooler.
Oil Cooler Oil Pressure Differential (Watercooled
Heat Exchanger — 2 to 25
PSI (65 to 150 PSIG Receiver
Pressure) — Check at the heat exchanger oil inlet and out-
let fittings
Oil Cooler Temperature Differential (Air-Cooled Ra
diaton –
The oil temperature differential depends on
the temperature of the air at the oil cooler fan and clean
Iiness of the core faces As ambient temperatures and core
restrictions increase the oil cooler outlet temperature will
increase The inlet oil temperature may be checked at
the fittings in the oil inlet line on the oil cooler module
The outlet oil temperatures may be checked at the fittings
in the oil inlet line on the oil cooler module The outlet
oil temperatures may be checked at the fitting in the oil
outlet line.
Oil Cooler Temperature Differential (Watercooled Heat
Exchanger) – The oil temperature differential depends on
the inlet water temperature and the water flow rate
permitted by the water flow control valve setting The oil
inlet temperature is approximately the same as the air dis
charge temperature— see gauge on instrument panel The
oil outlet temperature may be checked at the compressor
oil inlet line fitting
Oil Cooler Water Pressure Differential (Watercooled
Heat Exchanger) –
The water pressure differential
through the heat exchanger will depend on suPPly pres
sure flow rate cooler tube cleanliness and outlet pressure
The inlet and outlet water pressures may be checked at
pipe fittings supplied by the customer.
13-9-630 Section 5
Page 8