Gardner Denver EFD-25 HP, Руководство по эксплуатации и обслуживанию

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13--8--625 Page 32
FIGURE 5--5 -- OIL FILTER
Compressor, air/oil reservoir, separa-
tion chamber and all piping and tub-
ing may be at high temperature during
and after operation.
1. Stop unit and be sure no air pressure is in the oil
reservoir.
2. Disconnect, tag and lock out the power supply to
the starter.
3. Remove the spin--on element.
4. Clean the gasket face of the filter body.
5. Coat the new element gasket with clean lubricant
used in the unit.
6. Screw new element on filter body and tighten by
hand. DO NOT OVERTIGHTEN ELEMENT.
7. Run the unit and check for leaks.
COMPRESSOR OIL COOLER -- The cooler fan is
mounted on the compressor motor shaft; air is ex-
hausted through the oil cooler and away from the unit.
Do not obstruct air flow to and from the oil cooler. Allow
a minimum of two (2) feet (.6M) clearance around the
cooler. Keep both faces of the cooler core clean for effi-
cient cooling of compressor oil.
THERMAL CONTROL (THERMOSTATIC MIXING)
VALVE (FIGURE 5--1, page 27) is installed in the sys-
tem. This valve is used to control the temperature of
the oil. On start--up with unit cold, the element is open
to bypass, allowing oil to pass directly from the reser-
voir to compressor during warm--up. As oil warms, the
element gradually closes to the bypass allowing more
of the oil from the cooler to mix with oil from the bypass.
After the unit is warmed up, the mixing valve maintains
oil injection temperature into the compressor at a mini-
mum of 130
_
F (54
_
C). This system provides proper
compressor warm--up and prevents moisture contami-
nation of the oil.
To check the element, heat in oil -- it should be fully ex-
tended at 130
_
F (54
_
C). If the unit shuts down due to
high air discharge temperature, the cause may be that
the element is stuck open to the bypass. When flushing