NORTHERN LIGHTS M673LD3 GEM Series Sound Enclosure Instruction Manual

M673LD3 / M673L3
GEM Series Sound Enclosure
Assembly Instructions

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M673L3/LD3 GEM Sound Enclosure

Length (OA)
Width
Height| 28.5 in (724 mm)
19.6 in (498 mm)
21.0 in (533 mm)
 Assembled weight (shield only)| 34 lbs (15.4 kg)
Assembled weight (with generator set)| 405 lbs (184 kg)

PRIOR TO ASSEMBLY, INSPECT ALL COMPONENTS FOR DAMAGE. REPORT ANY DAMAGE TO THE SHIPPING COMPANY. CHECK THE PACKING LIST AT THE BACK OF THIS MANUAL TO BE SURE THAT ALL PARTS ARE INCLUDED.

NOTE: WHILE THE M673L3/LD3 GENERATOR SET CONTAINS A SINGLE POINT LIFTING EYE, THHE GENERATOR MAY STILL BE EQUIPPED WITH ORIGINAL FACTORY LIFTING POINTS. LOOSEN AND ROTATE ANY EXCESS LIFTING POINTS UNTIL THEY ARE  BELOW THE HIGHEST POINT ON THE ENGINE. RETIGHTEN BOLTS TO RETAIN.

SELECT A MOUNTING LOCATION IN ACCORDANCE WITH THE GUIDELINES IN INSTALLATION MANUAL IM1000 (INCLUDED WITH GENSET, OR AVAILABLE FOR DOWNLOAD AT WWW .NORTHERN-LIGHTS.COM). THE GENERATOR SET MUST TYPICALLY BE MOUNTED ON A RIGID, FLAT SURFACE ABOVE A STRONG SURFACE, SUCH AS THE VESSEL’S STRINGERS, TO MINIMIZE VIBRATION TRANSFERENCE TO THE HULL.

NOTE THAT THE THAT THE GENERATOR SET IS DESIGNED FOR SINGLE SIDE SERVICE. WHEN VIEWED FROM THE REAR, THE RIGHT HAND SIDE IS THE SERVICE SIDE AND SHOULD BE EXPOSED FOR EASY ACCESS TO MAINTENANCE POINTS. INSTALL THE GENERATOR SET IN THE VESSEL AS NEAR TO A LEVEL ATTITUDE AS POSSIBLE. ENSURE THAT THE ENCLOSURE’S LEFT HAND SIDE AND REAR ARE AT RECOMMENDED DISTANCES FROM THE VESSEL’S BULKHEAD (6 INCH RECOMMENDED, 4 INCH MINIMUM.)

AVOID POSITIONING THE ENCLOSURE INTO CORNERS WITH OVERHEAD BLOCKED TO REDUCE CHANCE OF INTAKE/EXHAUST AIR RECIRCULATING OUTSIDE THE SHIELD.

ON THE REAR PANEL, NOTE THE SMALL INTAKE HOLE IN THE VICINITY OF THE INTAKE SNORKEL. GUIDE THE HOSE SO THAT IT IS INSERTED INTO THE PANEL HOLE, ENSURING THAT THE HOSE DOES NOT GO SO FAR INTO THE REAR PANEL THAT THE HOSE END GETS BLOCKED.
MAKE SURE THAT THE HOSE IS NOT KINKED OR BENT IN SUCH A WAY TO RESTRICT THE ENGINE’S INTAKE AIR FLOW. THIS ARRANGEMENT IS DESIGNED TO ALLOW THE HOSE TO FOLLOW ITS NATURAL PATH WHEN PROPERLY INSTALLED INTO THE REAR PANEL. SOME ADJUSTMENT IS POSSIBLE BY LOOSENING EITHER BOLT ON THE SNORKEL HOSE’S SUPPORTING BRACKET.

NOTE: FOR SOUND SHIELD WIRE HARNESS INSTALLATION, SEE PAGE 6
NOTE: FOR GENERATOR CONNECTION TO THE VESSEL, SEE PAGE 11

Install connections for exhaust, AC power leads, DC Control panel leads, battery and water through holes in the rear panel as shown and as described below:

a. Connect the genset 1-1/2″ exhaust outlet to the exhaust system of the vessel.
b. Connect the AC output leads from the generator to the vessel’s power distribution panel. Pass the two leads through the second to top hole on the left side of the rear panel.
c. Connect the battery leads to the generator set passing the two leads through the second hole above the bottom left side on the rear panel.
d. Connect the sea water pump to the vessel’s water inlet. Push a 3/4″ hose from the vessel’s sea water strainer through the lower hole at the bottom left of the rear panel to the sea water pump inlet fitting.
e. Connect the DC control harness to the engine harness plug. Pass the harness and plug through the hole at the mid-section of the right side of the rear panel.
f. Connect the vessel’s fuel lines using Coast Guard approved rubber fuel hoses to the fuel manifold located on the bottom service side of the sound shield. The forward fitting is 5/16″ 37T JIC fuel suction, and the aft fitting is 5/16″ 37T JIC fuel return.

FOR APPLICATIONS WITH A SIPHON BREAK
(if siphon break is used, must order s-bend kit 27-71006)
Note the pre-installed penetration point in the upper left corner of the non- service side panel. Reference the plumbing diagram in the mounting and exhaust sections of the IM1000 installation manual. Remove the white plastic hole plugs by pushing them out from the inside and replace with the two rubber grommets (item15) provided.
CAUTION: GENERATOR SETS WITH WET EXHAUST THAT ARE INSTALLED NEAR OR BELOW THE VESSEL’S WATER LINE MUST USE A SIPHON BREAK TO PREVENT BACKFLOW OR WATER INTO THE ENGINE. THIS BACKFLOW CAN RUIN AN ENGINE AND POSSIBLY SINK THE VESSEL.

a. Disconnect the hose from the seawater pump output and from the rubber elbow on the expansion tank. Install two lengths of 3/4″ hose. The hoses must be of adequate length to allow mounting of a siphon break, a minimum of 12 inches above the vessel’s loaded water line.
b. Pass the seawater pump output hose through the top hole in the panel. The hose from the expansion tank must go through the bottom hole in the panel.
c. For more information, see the “Exhaust” section of the IM1000 Installation Manual included with the generator set.

Start the generator set and run under load to check for leaks of fuel, water, or exhaust gas.

PRIOR TO INSTALLING SIPHON BREAK SYSTEM:
CONSULT YOUR NORTHERN LIGHTS IM-1000 MANUAL FOR ROUTING REQUIREMENTS.
REFER TO YOUR SOUND SHIELD ASSEMBLY MANUAL FOR CONNECTION INSTRUCTIONS

ALL LATCHES ARE PRE-ADJUSTED FROM FACTORY. IN THE EVENT A LATCH REQUIRES ADJUSTMENT, FOLLOW THESE STEPS:

1. NOTE THE INTERFERENCE, OR REASON WHY THE LATCH PAWL WILL NOT ENGAGE THE PAWL SLOT. IF PAWL HITS SLOT BRACKET
   OR SHELF IT MUST BE MOVED TO ALLOW PAWL TO ROTATE INSIDE SLOT.

2. LATCH PAWL SHOULD OPERATE WITHIN SLOT FREELY WHEN LATCH HANDLE ROTATES ON REMOVAL.

3. WITH LATCH IN CLOSED POSITION, (LATCH PAWL POINTING TOWARDS SLOT, LOOSEN THE BOTTOM NUT. TURN TOP NUT TO CHANGE POSITION OF PAWL AND THEN RE-TIGHTEN THE BOTTOM NUT. ENSURE THE NUT IS FULLY TIGHT BEFORE OPERATING THE LATCH.

4. AN IDEAL LATCH CONDITION IS WHEN THE PAWL SWINGS INTO POSITION ON CLOSING, PULLS UP AND ENGAGES THE TOP OF THE SLOT WITH INCREASING RESISTANCE. WHEN THE LATCH RING IS FULLY DEPRESSED THERE SHOULD BE FIRM COMPRESSION OF PANEL PERIMETER SEAL.

5. IF YOU CAN LIFT UP A CORNER OF THE TOP PANEL AND SEE A SPACE, THE LATCH IS NOT TIGHT ENOUGH.

M673L3/LD3 GEM SERIES SOUND ENCLOSURE PACKING LIST

ITEM

| DESCRIPTION| NLI P/N| QTY| NOTES|

PACKED

---|---|---|---|---|---
SOUND SHIELD PANELS:
1| JUNCTION BOX BRIDGE COVER ASSEMBLY|

06-78029

| 1| ASSEMBLED|

□

11| FRONT PANEL ASSEMBLY|

06-78002

| 1| ASSEMBLED|

□

9| FRONT LOWER VALENCE ASSEMBLY|

06-78015

| 1| ASSEMBLED|

□

6| LOWER NON-SERVICE SIDE VALENCE ASSEMBLY|

06-78008

| 1| ASSEMBLED|

□

10| NON-SERVICE SIDE PANEL ASSEMBLY|

06-78012

| 1| ASSEMBLED|

□

2| REAR PANEL ASSEMBLY|

06-78003

| 1| ASSEMBLED|

□

5| REAR LOWER VALENCE ASSEMBLY|

06-78018

| 1| ASSEMBLED|

□

12| SEAL BAR ASSEMBLY|

06-78020

| 1| ASSEMBLED| □
13| TOP PANEL ASSEMBLY|

06-78006

| 1|

ASSEMBLED

|

□

14| SERVICE SIDE PANEL ASSEMBLY|

06-78010

| 1| ASSEMBLED|

□

7| LOWER SERVICE SIDE VALENCE ASSEMBLY|

06-78030

| 1| ASSEMBLED|

□

HARDWARE BOX (CONSISTS OF THE FOLLOWING PARTS):
3| 1/4-20 x 3/4″ HEX HEAD CAPSCREW, S/S|

12-30111

| 3| LOOSE|

□

4| 1/4″ EXTERNAL STAR WASHER, S/S|

15-09103

| 3| LOOSE|

□

8| NYLON BUMPER/RIVET|

11-467

| 12| LOOSE|

□

15| GROMMET 1-1/8″ ID x 1-7/8″ OD|

00-70083

| 2| LOOSE|

□

16| M8 x 12 18-8 S/S BUTTON HEAD SCREW|

12-70013

| 2| LOOSE|

□

17| M8 x 20 18-8, S/S HEX HEAD CAPSCREW|

12-00776

| 2| LOOSE|

□

18| M8 FLATWASHER, S/S|

15-11000

| 2| LOOSE|

□

19| M8 LOCKWASHER, S/S|

15-00705

| 2| LOOSE|

□

20| WIRE HARNESS KIT|

22-72026

| 1| LOOSE|

□

Packed By: __Date: ____

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---|---|---|---|---

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Printed in U.S.A.
LIT NO.: L813 9/20

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