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7.2 Adjustment
Read again 6.1 Diagram of piping example and 7.1 Warning and precaution on operation.
7.2.1 Pressure setting is not preset (the user does not require pressure presetting)
(1) Verify that stop valves V
(2) Adjust the stop valve V
regulating valve (or safety valve) will not be activated. Keeping the regulating (safety) valve
inactive, allow the fluid to pass through the piping to discharge foreign objects. After
completely expelling foreign objects, be sure to close the bypass stop valve V
(3) Remove the cap
across flat) CCW until the spring
(4) Fine tune the opening of the stop valve V
flow.
(5) Gradually open the inlet side stop valve V
(6) Observing the outlet pressure gauge, gradually adjust the adjusting screw
across flat) to obtain the desired pressure. (To increase the pressure, turn the screw
clockwise; to reduce the pressure, counterclockwise.)
(7) Gradually open the stop valve V
(8) After completing the adjustment, tighten the lock nut
7.2.2 Pressure setting is preset (the user requires pressure presetting)
(1) Verify that stop valves V
(2) Adjust the stop valve V
regulating valve (or safety valve) will not be activated. Keeping the regulating (safety) valve
inactive, allow the fluid to pass through the piping to blow out foreign objects.
After completely expelling foreign objects, be sure to close the bypass stop valve V
(3) Adjust the opening of the stop valve V
(4) Observing the outlet pressure gauge, gradually increase the opening of the stop valve V
the inlet.
(5) Gradually increase the opening of the stop valve V
(6) If the reduced pressure is outside the desired value, remove the cap
nut
. Observing the outlet pressure gauge, gradually turn the adjusting screw
3 3
○
across flat) to obtain the desired pressure. (To increase the pressure, turn the screw
clockwise; to reduce the pressure, counterclockwise.)
(7) After completing the adjustment, tighten the lock nut
, V
and V
are closed.
1
2
3
on the bypass pipe to an opening so that the primary pressure
3
and loosen the lock nut
3 5
○
becomes free from the load.
2 9
○
and readjust outlet pressure to obtain the desired value.
2
, V
and V
are closed.
1
2
3
on the bypass line to an opening so that the primary pressure
3
so that minimum amount of fluid is allowed to flow.
2
10
. Rotate the adjusting screw
3 3
○
so that minimum amount of fluid is allowed to
2
.
1
and fit the cap
3 3
○
.
2
and attach the cap
3 3
○
.
3
(holding
3 4
○
(holding
3 4
○
.
3 5
○
.
3
at
1
and loosen the lock
3 5
○
(holding
3 4
○
.
3 5
○
■ E P D T - 1 7 9 c ■
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