2_ Connect these items:
 - The pressure input (19) to a constant positive pressure
 supply of minimum 610 mbar (8.85 PSI).
 - The vacuum input (24) to a constant negative pressure supply
 of minimum 20 mbar (0.3 PSI).
 - The electrical power connector (26) to a 28V DC power
 supply.
 - The test wiring to the safety-valve position-switch
 connector (27).
 - The orange coloured connector of the flexible hose assembly
 (29) to the vacuum output connector (23).
 - The green coloured connector of the flexible hose assembly
 (29) to the pressure sense connector (21).
 - The green coloured connector of the flexible hose (17) to
 the pressure output connector (20).
 3_ On the check device (15) make sure that the fixed pressure
 connector (16) is screwed out.

_ electrical-connector (3).
 2 Remove the nut (33), the strainer (34) and the washer (35).
_
 3 Put the check device (15) in position on the bellmouth (14)

_ and close the clamps (32).
 4 Make sure that the pivoted pressure connector (30) is in
_ position over the poppet valve outlet (37).
 NOTE : You can see this through the cut-outs in the check
____ device (15).
 5 Screw in the fixed pressure connector (16) until you get a
_ seal at the poppet valve (12), and the clamps (32) are tight.
 6 Adjust the pivoted pressure connector (30) with the adjustment
_ screw (31) until you get a seal at the poppet valve outlet (37).
 7 Connect these items:
_
 -The green coloured connectors of the flexible hose (17) and the flexible hose assembly (29) to the fixed pressure connector (16).

 - The orange coloured connector of the flexible hose assembly (29) to the pivoted pressure connector (30). - The neutral coloured connector of the flexible hose assembly (29) to the bulkhead connector (36).
 (2) Functional Test of the Test Equipment
 (a) Apply hand pressure at points A to open the safety valve (4). - The position indicator lamp (22) on the test set comes on.
 (b) Allow the safety valve (4) to close. - The position indicator lamp (22) on the test set goes off. 
R R  (c) For PN 0622-19857-01 Adjust the pressure monitor to zero: 
R R  1_  Turn the adjustment screw (28) until the value shown on thepressure monitor is zero. 
R R  (d) For PN 0622-19857-02 Adjust the pressure monitor to zero: 
R  1_  Press F1 and F2 keys at the same time to enter the function.
R  2_  Use the keys AL1 and AL2 to set the zero value.
R  3_  Press F2 key.
R  4_  Press F2 key again to return the display to normal operation.
R R  (e) Slowly open the vacuum control (25) until you get a stable pressure value shown on the pressure monitor.
 NOTE : Do not go above 588 mbar (8.52 psi) pressure.____ Failure to get a stable pressure value is an indication of possible leaks. Check the seal at the poppet valve (12) and at the poppet valve outlet (37). 
R  (f) Close the vacuum control (25). 
R  (g) Disconnect the orange coloured connector at the vacuum outlet (23) to release any pressure in the system. 
R  (h) Reconnect the orange coloured connector to the vacuum outlet (23).

 Subtask 21-31-00-720-051
 B. Functional Test of the Safety Valve
 (Ref. Fig. 501/TASK 21-31-00-991-001)

 (1) Testing of the Safety Valve
 (a) Functional Test of the Positive Differential-Pressure Protection 1 Make sure that the value shown on the pressure monitor is set
_
 at zero.

R NOTE : For adjustment to zero value refer to working step A2c
____ R or A2d.
 2 Slowly open the vacuum control (25) to give a negative
_
 pressure.

 3 Increase the negative pressure until the safety valve opens.
_ NOTE : You know this when the position indicator lamp (22)
____
 comes on.

 4 When the position indicator lamp (22) comes on you must make a
_ note of the value shown on the pressure monitor. This value must be between 588 mbar (8.52 psi) and 598 mbar
 (8.67 psi) pressure.
 5 Close the vacuum control.

_
 6 Release the negative pressure.

_ NOTE : To do this you must disconnect the orange coloured
____ connector at the vacuum output (23).
 7 Reconnect the orange coloured connector to the vacuum output
_
 (23).

 8 Do the test with the calibrated saftey valve at least 2 times
_ more to make sure the setpoint adjustment is the same each time.
　
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