Instruction manual

15
INM9380-RD-1
May 2012
5.2.3.1 Mounting a module
Refer to Figure 5.4.
Orientate the module so that the smaller front clip is facing the user, then:
• lower the module so that the safety retaining clip on the TTA housing fits into the loop
on the module
• locate the terminal pins into their contact sockets on the TTA housing and
• push the module home until front and rear retaining clips engage.
5.2.3.2 Removing a module
Refer to Figures 5.3 and 5.4 for further information.
Removal is a two-step process that first breaks the electrical connection, followed by the
physical removal of the module from the TTA.
• Press the clip at the rear of the module and tilt the module forward until the clip
disengages at the rear.
• Press the front clip and withdraw the module from its socket until it is stopped by the
safety retaining clip, then press down on the safety retaining clip enough to release it
and pull the module away from the TTA body without rotating or twisting it.
5.3 Spur connections
All of the spur connections are intrinsically safe and therefore may be live-worked in a
hazardous area without ‘gas clearance’, while complying with normal ‘permit to work’
procedures. If spur wiring is removed from a connecting plug, ensure that the same
polarity is observed when it is reconnected.
For addtional information refer to Section 4.6 on page 11.
5.3.1 Removing a Spur Surge module & spur cable adjustment
If an FS32 Spur Surge module needs to be removed from circuit, use the following
procedure.
a) Loosen the two screws securing the pluggable, spur-wiring connector to the
Spur Surge module and unplug it.
b) Loosen all three of the Spur Surge module’s fixing screws and unplug it from the
carrier.
c) Plug the spur connecting plug into its mating socket on the barrier carrier and tighten
the fixing screws to a recommended torque value of 0.4 Nm.
5.3.2 Adding a Spur Surge module & spur cable adjustment
If an FS32 Spur Surge module is added, follow this simple procedure. Refer also to
Section 4.6.1 for further fitting details.
a) Loosen the two screws securing the pluggable, spur-wiring connector to the carrier
and unplug it.
b) Plug the Spur Surge module into the vacant socket on the carrier and tighten the two
fixing screws and its grounding screw, all to a recommended torque of 0.4 Nm.
c) Plug the spur connecting plug into its mating socket on the Spur Surge module and
tighten the fixing screws to a recommended torque of 0.4 Nm.