Smiths Kelvin Hughes Nucleus 3 5000 Series, System Handbook

Page: 154 / 510

FITTING
Trans ceiver and Turn ing Mech a nism
17 The Antenna and Transceiver are specified and
supplied separately. Refer to Figure 1c for outline
dimensions and fixing centres. The following criteria are to
be observed when installing:
NOTE:
Assemble the two units together prior to hoisting into the
installation position.
(1) Remove the protective caps, tapes etc. Ensure
the waveguide faces are clean and free from
grease. Fit the appropriate ‘O’ ring. Fit the
Antenna array to the transceiver with the eight
bolts, holding it loosely in position.
DO NOT
TIGHTEN THE BOLTS . Refer to Figure 2c.
(2) Align the waveguide from the Antenna to the
Rotating Joint and fit the four waveguide bolts. Do
not force the waveguide to the coupling face.
Tighten the waveguide bolts evenly until the
mating faces are flush. Torque load the Antenna
retaining bolts to 19 to 24 Nm (14-16 lb./ft).
(3) Hoist the Transceiver and Antenna assembly,
(ensuring the slings do not foul with the Array), to
the mounting plate.
(4) Mount the Transceiver facing forward (removable
cover facing aft). Fit the retaining bolts and torque
load to 50lb/ft (75kg/m) then gain access to the
interior by removing the rear cover.
NOTE:
The outer casing of the Transceiver must be bonded to the
ship’s superstructure using a copper earthing strap
connected to the earthing point shown in Figure 1.
(5) The connecting cable from the Transceiver to the
Display should be kept to a maximum of 60
metres. Do not exceed 60m without consulting the
Kelvin Hughes Technical Department.
(6) Fit the Monitor Arm (if supplied) onto the side of
the casing and secure the clamp with the four
retaining screws. The monitor arm cable is passed
through the smaller cable gland and clamped. The
cable screen is to be earthed by the ferrules in the
cable gland assembly.
40V Power Sup ply CZZ-A22
18 The +40V Power Supply is fitted to the bulkhead using
the four installation bolts provided.
Original 4c.3 May 01
KH 2020
Chap 4c
CAU TION
Do not re move the trans par ent film cov er ing the
wave guide out let as this pre vents the in gress of
wa ter or mois ture.