NOTE : The minimum time for the primer to cure is one hour at 70
____
deg.F (21.1 deg.C)
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WARNING : THE SEALANT IS CLASSIFIED AS A DANGEROUS MATERIAL WHICH
_______ CAN CAUSE INJURY OR ILLNESS IF IT IS NOT CORRECTLY USED. BEFORE YOU USE THIS PRODUCT, READ THE APPLICABLE MANUFACTURER'S "MATERIAL DATA SAFETY SHEET" AND OBEY THE SAFETY AND HEALTH PRECAUTIONS.
1 Mix the sealing and the activator in accordance with the
_
manufacturer's instructions.
NOTE : The sealant should not be applied when the temperature
____ is below 50 deg.F (10 deg.C).
NOTE : Use the silicone sealant DC 90-006 with the primer (DC
____ 1200) or silicone sealant RTV-88 with the primer (SS 4004).
(d) Apply a layer of sealant between 0.010 in. and 0.020 in. (0.25 and 0.51 m) thick around each bolthead, the pressure switch flange, and around the mating surface of the bracket.
(e) Allow the sealant to cure for a minimum of 24 hours in accordance with the manufacturer's instructions.
NOTE : To decrease the cure time, allow the sealant to gel at
____ ambient temperature for a minimum of 2 hours. After 2 hours of gel time, apply a maximum of 120 deg.F (49 deg.C) heat to the sealant for a minimum of 2 hours.
(13) Install the insulation housing and booties as follows:
(a) Install the LP bootie (5) and the HP bootie (10) on the tubes. Make sure the capstan on the bootie is in the position shown on figure 401.
(b) Put a loop of lockwire 0.032 in. (0.8 mm) dia. (Material No. CP8001) around the capstan. Twist the safety wire around the bootie and attach it to the capstan again.
NOTE : Do not tighten the safety wire more than necessary to hold
____ the bootie in position on the tube.
(c) Install the insulation housing (15) on the pressure switch (25). Make sure the housing is installed over the ends of the booties (5, 10).
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(d) Put a loop of lockwire 0.032 in. (0.8 mm) dia. (Material No. CP8001) around the capstan. Twist the safety wire around the insulation housing (15) and attach it to the capstan on the opposite side.
NOTE : Do not tighten the safety wire more than necessary to hold
____ the insulation housing in position on the pressure switch.
Subtask 79-34-15-710-050
C. Do a minimum idle check (Ref. TASK 71-00-00-710-006) and do a check of the unions for leakage.
5. Close-up
________
Subtask 79-34-15-410-050
A. Close Access
(1) Make sure that the work area is clean and clear of tool(s) and other items.
(2) Close the fan cowl doors (Ref. TASK 71-13-00-410-040):
FOR 1000EM1
437AL, 438AR
FOR 1000EM2
447AL, 448AR
(3) Remove the warning notice(s).
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OIL FILTER CLOGGING WARNING SYSTEM - DESCRIPTION AND OPERATION
______________________________________________________________
1. Oil Differential Pressure Switch
________________________________
(Ref. Fig. 001)
- The oil differential pressure switch is located above the scavenge filter. Lines are routed to the switch from bosses on the scavenge filter.
- Actuation of the differential pressure switch is at:
25.5 psid (1.76 bar) plus or minus 1 psid (0.07 bar) increasing pressure 22 psid (1.52 bar) decreasing pressure.
2. Oil Filter Clogging Indication
______________________________
(Ref. Fig. 002)
**ON A/C 001-049, 051-099, 101-105, 151-199, 201-299, 301-302,
(Ref. Fig. 003)
R **ON A/C 106-149, 303-399, 401-499,
(Ref. Fig. 003A)
**ON A/C ALL
An oil differential pressure switch (also named clogging indicator transmitter) is installed on the lubrication unit. The pressure switch signal is used by the ECAM system to generate the main oil filter clog indication when the oil differential pressure across this filter is comprised between 29 psig (2 bar) and 33 psig (2.28 bar). In result:
- the MASTER CAUT light (amber) comes on
- ENG page on the lower display unit of the ECAM appears with OIL FILTER CLOG indication (White and Amber) 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320飞机维护手册 AMM OIL 滑油(74)
