POSEIDON PE 100-T, Instruction Manual

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Instruction Manual
w
PE 100-T
23
Fig. 24 Venting the final pressure safety valve
Venting
Checking blow-off pressure
Check blow-off pressure of the final pressure safety valve
regularly, see service manual. Pump unit to final pressure
with shut-off valve closed until safety valve blows off. Check
blow-off pressure of safety valve at pressure gauge. If devi­
ation is 10% or more, replace safety valve.
4.4.8. PRESSURE GAUGE
DESCRIPTION
The compressor unit is equipped with a final pressure gauge
(Fig. 25). The red marking on it shows the max. allowable
operating pressure.
Fig. 25 Final pressure gauge
Mark
MAINTENANCE
We recommend that the final pressure gauge is checked
from time to time. For this purpose we have developed a
special test pressure gauge with an adaptor which immedi­
ately recognizes any deviations in readings (see High Pres­
sure Accessories Catalogue 8550/..).
Slight deviations during operation are normal and can be ig­
nored. Excessive inaccuracy will require the pressure gauge
to be replaced.
4.4.9. VALVES
DESCRIPTION
The valve heads of the individual stages form the top part
of the cylinders. The intake and pressure valves are fitted in­
side the valve heads. Note that the valves are operated by
the flow of the air.
On the suction stroke, the intake valves open and the air
flows into the cylinders. At the start of the compression
stroke the intake valve closes and the air opens the pressure
valve, Fig. 26.
Intake and pressure valve of the 1st stage is a plate valve
(Fig. 27).
INITIAL OPERATIONAL CHECK
After maintenance work on the valves, valves should be
checked. Note that the intake line to the valve heads should
be warm and outlet piping should be hot. Valves are then
operating properly.
Fig. 26 Valve operation
Intake Pressure
Fig. 27 Valve 1st stage
Intake side Pressure side
Top view
from intake fil­
ter
to 2nd stage
N4860−F98