MM 922 NAVIGATION LIGHT SELECTOR

A fully protected six position rotary switch rated and programmed to select all approved navigation light combinations normally used on auxillary sailing vessels of up to 20 metres.

 

 

 

 

Label 120 x 84mm(4.72x3.3in) Note:- The Label has white text on a black background as seen.

Switching sequence
Switch Position
Switch Position
Switch Position
Switch Position
Switch Position
Switch Position
Lantern
OFF
ANCHOR
POWER 2 HIGH
POWER 1 LOW
SAIL 1 LOW
SAIL 2 TRICOLOUR
All Round white
OFF
ON
ON
OFF
OFF
OFF
Port & Starboard
OFF
OFF
ON
ON
ON
OFF
Masthead
OFF
OFF
OFF
ON
OFF
OFF
Stern
OFF
OFF
OFF
ON
ON
OFF
Tricolour
OFF
OFF
OFF
OFF
OFF
ON

N.B. The POWER 2 combination should not be used on vessels of over 12 metres.

For further information refer to "International Regulations for Preventing Collisions at Sea" RYA Publication G2.

Mounting location:

The Selector is designed for panel mounting in any enclosed location. Exterior mounting is not recommended unless the Selector is housed within a waterproof enclosure with suitable sealing glands.

Orientation should be such that the ‘vent’ is on a lower edge. If inverted mounting is imperative, eg. under a coachroof, Selectors can be supplied to special order with an alternative ‘vent’ position.

Dimensional Details:

A
Height -90 (3.54)
E
Knob protrusion from rear of panel 35 (1.38)
B
Width including blade terminals 113(4.45)
F
Fixing hole diameter 9.53 (0.375)
C
Depth behind panel 68 (2.68)
G
Location lug off-set (PCR) 9.53 (0.375)
D
Maximum panel thickness 5 (0.2)
H
Location lug hole diameter 3.2 (0.125)

Dimensions are in millimetres with Imperial equivalents in brackets.

Knob removal and refitting:

Carefully lift off the cap, loosen the exposed screw, and pull the knob off. Ensure the spindle is clean and grease-free then refit by pushing the knob onto the spindle whilst holding the screw firmly in so that the spindle enters the collet while it is extended from the knob. When fully on the spindle, tighten the screw and rotate the switch fully anti-clockwise, loosen the screw and align the pointer with the OFF position; finally tighten the screw and replace the cap.

Wiring:

Use 0.25 inch crimp receptacles to connect the positive of the battery and each navigation lamp to the blade terminals as labelled. Use the supplied 0.25 inch multiway blade connector to join the battery negative and all lamp negatives. If a bicolour lamp is used in lieu of separate port and starboard lamps, connect it to either the port or starboard blade and leave the remaining blade free. An optional LAMP STATUS MONITOR may be plugged into the connector labelled ‘MM931 OUTPUT.

Protection:

Automatic protection is provided for each lamp circuit; no additional fuses or cut-outs are required. An overload in any one lamp circuit will automatically cause that circuit to be cut off; other lamps will not be affected. Resetting is simply achieved by switching off the lamp in question for more than 25 seconds, either by selecting the OFF position or a lighting combination where this lamp is not used. If the fault condition has cleared, switching on will restore the lamp supply; if the fault is still present, automatic cut-off will recur.