Bosch MB-WS, MB-FS User Manual

MB-FS / MB-WS

Fire Phone Station / Warden Station

The MB-FS is a Fire Phone Station designed to integrate with an BOSCH HMB system. The cabinet is red and can be either surface mounted or semi-flush mounted. A thumbturn fastener secures the cabinet door. The WS is similar to the FS, and is equipped with an armored cable assembly.

When the handset goes off-hook, the status LED illuminates, and the device will “ring in” at the HMB-MP Master Panel. When the Master Panel operator connects the call, 2 way communication is established between the Phone Station and Master Panel. The call can be terminated either by returning the handset to the cradle, or by the Master Panel operator disconnecting the switch.

Field wiring connections:

#6-32 wire clamp screw 14-18 AWG #8-32 wire clamp screw 12-18 AWG

Horizontal wire entry terminal 18-26 AWG

Wire gauge determined by circuit load

TB1:

Ter. 1 Fire Phone Circuit + (Tip) Ter. 2 Fire Phone Circuit - (Ring)

TB2:

Ter. 1 Ter. 2 to handset (white wire) Ter. 3 to handset (black wire) Ter. 4 to handset (red wire)

to handset (white wire)

TB3:

Ter. 1 to hook switch Ter. 2 to hook switch

LED1:

LED 1 Status

Electrical Ratings:

Power: 24VDC Standby: 0 mA Active: 25 mA

Ground faults are indicated at 10K impedance or less.

HOOK

SWITCH

TB3

white

4 3 2

HANDSET

white

TB2

TIP

(+)

red

black

FACTORY WIRED

TB1

Must wire break

to maintain

supervision

RING

(-)

Fire Phone

Circuit

(supervised, power limited,

maximum 50 ohm line resistance)

P/N B-5062 Rev. C

Page 1 of 2

(EOLR at last device)

130 Perinton Parkway, Fairport, NY 11450 Customer Service: (800) 289-0096 Technical Support: (888) 886-6189

EMERGENCY

TELEPHONE

FOR EMERGENCY USE ONLY

Thumbturn closure

6-32 screw

Status LED

6-32 kepnut

Magnetic hook switch

6-32 kepnut

remove (2) 6-32 screws and (2) 6-32 kepnuts to access wiring