26
SAFIR 5L
OPERATION AND ATTENDANCE MANUAL
PG 01-31
4.2.2.
During APU installation on an airplane and its activation, it is also necessary to adhere to the following
instructions:
The installation of APU and the separate devices of APU on an airplane must be approved by the Manufacturer
APU.
During the installation of the individual devices follow the flow direction of working liquids marked by
arrows.
During mounting the devices on an airplane, it is necessary to mount the piping of the fuel-oil or air
installation, which must be absolutely clean, immediately after removal of the plugs from the sockets. During
this work it is absolutely necessary to use the appropriate spanners for socket tightening, so that they would not
slew and so that the devices would not get mechanically damaged. Cap nuts and other component parts must be
secured with binding wire. When dismounting the piping, it is necessary to replug the sockets immediately.
The purity of working liquids, filled into the fuel-oil loop of APU must meet the applicable standards. Only
liquids listed in the Engine log book or in Chapter I of this Manual can be used for operation.
The Air System must be leak-tight in all its joints to prevent pressure losses ! ! !
The oil tank oil-level gauge must be visible to allow checking of oil level.
There must be adequate space under the oil cleaner 490131.01 for easy dismounting of the filter body (free
space under filter body min. 80 mm).
There must be adequate space under the Blok of filter and servo 490740. 01 for easy dismounting of the filter
body (free space under filter body min. 80 mm).
Operation of the ignition device with opposite polarity of supply power or without connection to the ignition
plug is not permissible ! ! !
During assembly of devices with electric power supply adhere to the requisite delivery conductor cross-section
sizes, see appendix No.4.
Install Control Box that connectors will available for service staff. Control Box could be placed in place where
is not source of heat and inlet of radiate heat.
APU S5L must be grounded to the airframe using a grounding wire connected to the grounding screws,
see position 26 and 27, Figure 10 on page No. 42 and dimension drawing appendix No. 2
Control box LUN 3594.04 must be grounded to the airframe by a grounding wire connected to the
grounding screw. Location grounding bolt see Annex 1, Technical and Operating Manual PRP-2011-
602-02-001 standard and dimension drawing appendix No. 2
The connection of the exhaust gas sensors on APU and Control Box is provided by compensative line with
length 5000 mm, which is supplied with Control Box.
Compensative line is mounted on one of temperature sensor placed on Exhaust pipe. To reduce risk of change
are outputs resolute by diameter of screw :
-
4 mm «
СН
» (Chromel)
-
5 mm «
А
» (Alumel).
