Draeger Safety Ltd 003 Manuale Utente

User Instructions

3354876 : Edition A : August 2005 : Subject to Modification (A4-D-P)

 PSS

®

 MERLIN

®

 TELEMETRY

REPEATER UNIT

This User Instruction describes the operation of the PSS® Merlin® Repeater Units when used in conjunction
with PSS® Merlin® Data Radio Unit and the PSS® Merlin® Telemetry System.  It is important that the
instruction be read in conjunction with the User Instructions for the following products:
1. Sentinel
2. PSS® Merlin® Telemetry System and,
3. Associated self contained respiratory protection apparatus (SCBA).

For Your Safety

u Refer to and take note of the ‘For Your Safety’ statements in the Instructions for Use supplied with the

selected SCBA.

u Use the equipment only for the purpose as specified in this Instruction for Use.

u Only trained competent personnel should carry out the requirements of this instruction.

u Use the equipment and any approved ancillary units only in the combination as outlined in this

instruction.

u There is a duty and responsibility on employers to ensure that a safe system of work is in place for

entry into and working within a hazardous environment.  The owner or the operator of the equipment,
described in this Instruction for Use, must ensure the safety of personnel by providing the correct and
appropriate personal protection equipment to personnel allocated to use and position the equipment
when entering and working in an environment identified as being hazardous.

u

The 

PSS® Merlin® Repeater Units

 meet the FCC requirements regarding exposure of human

beings to radio frequency radiation. Occupational/Controlled limits apply when persons are exposed
to radio frequency radiation as a consequence of their employment provided these persons are
fully aware of and exercise control over their exposure. Awareness of exposure can be accomplished
by use of warning labels or by specific training or education through appropriate means, such as
an RF safety program in a work environment.

Liability Statement

Responsibility for reliable function of this equipment and any approved ancillary units, transfers to the
owner or the operator when the equipment is serviced or repaired by untrained personnel, (not employed
or authorised by Dräger) or when used in a manner not conforming to its intended use.

Description and Intended Use

Scenarios may occur at an incident where the
PSS® Merlin®

  entry control board (ECB)

experiences a loss of radio contact with one or
more of the ‘Logged On’ radio modules (PU’s)
associated with the wearer’s of the SCBA.

When strategically positioned at an incident the
PSS® Merlin® Telemetry Repeater Units will
extend and enhance the effective transmission
coverage between the ECB and the ‘Logged On’
PU(s).  The repeater is able to receive data
transmissions from any ECB or PU(s) within range
and then re-transmit the data to any ECB or PU(s)
within range.

The Repeater System can consists of up to two
repeater units identified as Repeater No. 1 and
Repeater No. 2.

The sequence for the 'In Use' positioning of the
repeaters is as follows:

1. Repeater No. 1 must be in range of the ECB.
2. Repeater No. 2 must be in range of Repeater

No. 1 (Chain Configuration) or in range of the
ECB (Star Configuration).

Contained inside a weatherproof carry case with
detachable carrying strap, each repeater
incorporates an integral digital radio transmitter/
receiver powered from a single rechargeable
battery.  Also included are associated antenna and
accessories.  Details are as follows:

1 Repeater Radio/Transmitter c/w Control Box

(Repeater No. 1 or No. 2).
Frequency:  450 - 470 MHz

1 Rechargeable Battery.

(Not charged or fitted)

1 Release Key (Battery)
1 Antenna Support Tube
1 Antenna (2m cable) c/w BNC Plug
1 Leaky Feeder Connection Cable
1 BNC ‘T” Adaptor (1 Plug and 2 Jacks)

It is recommended that the chapter on
Propagation in the Instruction for Use for PSS®
Merlin® Telemetry is studied and understood in
relation to positioning of antenna, repeaters,
leaky feeders etc. and the affect of obstructions
to the radio signal.

Technical Data

Frequency

450 - 470 MHz

Dimensions

45(cm) x 18(cm) x 10(cm)
45(cm) x 18(cm) x 55(cm) (antenna fitted)

Weight

2Kg (incl. battery)

Operating Temperature

-30

O

C to +75

O

C

Battery Details

6.5V NiMH (nickel metal hydride)
battery - rechargeable.
Weight 0.2Kg
Battery Life  8 hours continuous operation.
Charge temperature range  41°F to +104°F

Caution - Worn-out Battery

l Do Not incinerate – risk of explosion.

l Do Not puncture the battery casing – risk

of explosion.

l Special waste disposal of battery  - according

to local waste disposal regulations.  Information

on this subject should be available from the

local environmental and regulatory agencies and

waste disposal companies.

Charging the Battery

The battery is not charged, or fitted, to the repeater
when supplied and must therefore be charged
before initial use.  Refer to the Order List –
Accessories for details of charging units and
accessories.

Safety Note: The charging units are not approved

to the same intrinsic safety standard as is applied

to the repeater.  Do Not attempt to charge the

battery underground or in an area designated

as, or subject to explosion hazard.  Charge the

battery in a safe area.

Refer to the label attached to the Universal Power
Supply (AC) to check that the electrical main
supply voltage corresponds to the specified voltage
requirement as indicated on the label.

Important Note:  The temperature of the battery

is measured by a thermistor inside the battery

cell.  To protect the battery, the charging process

will stop if the temperature of the battery is below

41°F (5°C) or exceeds +104°F (+40°C).

Fitting the Battery

Refer to Figure 1.

u Partially open the lid of the carrying case,

enough to access the lid of the radio module/
battery compartment.  Lift and fold back flat
the lid to access the radio module.

u Locate the battery to the dovetail guide of the

radio module then slide the battery along the
guide until a positive audible ‘click’ is heard.
Correct retention is indicated when the ‘Red’
indicators are visible in the two release key
holes in the base of the radio module.  To
further ensure positive retention, grip the
battery and attempt to remove - there must be
no movement.

Refer to Figure 2.

u Press the toggle switch (1) Fig. 2 to the ‘On’

position - the ‘Red’ LED. (2) should begin
‘flashing’  confirming a satisfactory charge
condition of the battery.  Switch ‘Off’.

u Fold back the lid of the radio module/battery

compartment to close then close the main lid
of the carrying case.  Ensure the Velcro
fastening is secure.

u The repeater is now ready for operational use.

In Use

Safety  Warning:  Refer  to  'For  Your  Safety'

regarding the duty and responsibility on employers.

Important Note: Before operational use of the

repeater(s) ensure that a fully charged battery is

fitted.  Switch ‘On’ the repeater - an intermittent

short ‘flash’ Off  of the ‘Red’ LED signals a low

charge condition of the battery – recharge the

battery.  Fit a fully charged battery.

Operation - Single Repeater

The following procedure applies to the use of either
Repeater No. 1 or Repeater No. 2 when used as
individual units (Star Configuration) in range of and
communicating with the operative ECB and with
the associated ‘Logged On’ PU(s).

u Open the lid of the carrying case and remove

the antenna and antenna support tube from its
holder in the lid.  Open the inner pouch to access
the antenna cable.  Connect the BNC plug of
the antenna cable to the BNC jack from the
control box – Fig. 3.

Refer to Figures 4 and 5.

u Insert the end of the antenna support tube

(Fig. 4) into the location hole in the case.  Insert
the antenna (1) Fig. 5 into the support tube.

u Fold the excess cable neatly and place in the

pouch then close the lid of the carrying case.

Fig. 2

Fig. 1

1980

1

2

3

1981