(h)
Make sure that all values shown on the gages:
-
inlet oil temperature (5),
- outlet pressure (6),
-
inlet pressure (7) and
-chamber vacuum (8)
are in the given limits.
(i)
Turn the switch (14) to the AUTOMATIC position.
(j)
Close the fill connection of the (21) HYDRAULIC PURIFIER
(HSPA181-380J).
(k)
After approximately 30 minutes:
-
Set the switch (13) to the OFF position.
-
Set the main switch (15) to the OFF position.
(l)
Put a container below the valve (4).
(m)
Open the valve (4) to remove collected water.
(2)
Do the cleaning procedure of the Green hydraulic system as follows:
(a)
Make sure that the hydraulic system of the HYDRAULIC PURIFIER (HSPA181-380J) is depressurized. The low pressure indicator (10) and the high pressure indicator (9) must show 0.
-If necessary depressurize the hydraulic system by opening the drain valves (3).
(b)
Make sure that the drain valves (3) are closed.
(c)
Connect the hydraulic lines (1) of the HYDRAULIC PURIFIER (HSPA181-380J) to the aircraft connectors
-1006GM suction
-1008GM delivery.
(d)
Set the main switch (15) to the ON position:
-The white power on light (19) comes on.
(e)
Turn the switch (14) to the START position.
(f)
Set the switch (16) to the ON position.
(g)
Make sure that all values shown on the gages:
-
inlet oil temperature (5),
- outlet pressure (6),
-
inlet pressure (7) and
-chamber vacuum (8)
are in the given limits.
(h)
Turn the switch (14) to the AUTOMATIC position.
(i)
Set the main pump switch (17) to the ON position.
(j)
Make sure that the low pressure indicator (10) shows the same pressure as shown on the gage of the Green hydraulic reservoir. If necessary, adjust the pressure with the pressure control valve (11).
(k)
Make sure that the value shown on the high pressure gage (9) is in the given limit.
(l)
Look at the water content indicator (22) to examine the water content of the hydraulic fluid.
Hydraulic Purifier
Figure 317/TASK 12-36-29-991-017
1EFF : ALL 1 12-36-29 Page A332
1 1 Feb 01/98
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NOTE : The water content indicator is optional available for the
____ HYDRAULIC PURIFIER (HSPA181-380J). If your HYDRAULIC PURIFIER (HSPA181-380J) has no water content indicator, you must take a hydraulic fluid sample (Ref. TASK 12-32-29-281-001).
(m)
Obey the fluid level of the Green hydraulic reservoir during the cleaning procedure. You can adjust the reservoir level with the pressure control valve (11).
(n)
To make a fluid flow in the Green hydraulic system operate the subsequent hydraulic users 2 times minimum every 30 minutes:
-
the rudder,
-
the ailerons,
-
the elevators,
-
the flaps,
-
the slats,
-
the brakes,
-
the landing gear doors and
-
the trimmable horizontal stabilizer.
(o)
Do a check of the water content indicator (22) at the HYDRAULIC PURIFIER (HSPA181-380J) or take a hydraulic fluid sample (Ref. TASK 12-32-29-281-001).
(p)
If the water content is still high, continue with the cleaning procedure.
(q)
Stop the cleaning procedure when the water content indicator (22), or the analysis of the hydraulic fluid sample gives a low water content.
(r)
Adjust the correct hydraulic fluid level in the Green hydraulic reservoir by operating the pressure control valve (11).
(s)
Set the main pump switch (12) to OFF.
(t)
Set the switch (13) to OFF.
(u)
Set the main switch (15) to OFF.
(v)
Disconnect the hydraulic lines (1) of the HYDRAULIC PURIFIER (HSPA181-380J) from the aircraft connectors.
(w)
Disconnect the electrical connection (20) of the HYDRAULIC PURIFIER (HSPA181-380J).
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