PERKO 0174 - Manual (Page 2)

FIGURE NO. 0174 UNDERWATER LIGHT
IGNITION PROTECTED
Installation and Operating Instructions
Please Read All Instructions Before Proceeding
*General Information:
This light has been shipped with a 12V, 25° bulb installed. A 40° bulb is
included in the package for users who desire a wider light beam. Refer to
Section 3, “Changing the Bulb”, should you wish to change the bulb.
1. Select Mounting Location
a. This light must be installed below the waterline and must not be oper-
ated unless the outer flange and lens are completely submerged.
b. The mounting surface must be flat to insure a watertight seal.
c. When choosing a mounting location, make sure there is
sufficient room in the bilge to take the back plate off and remove the
interior of the light in case the bulb has to be replaced (at least 6”).
2. Installation
a. Remove boat from water.
b. Select mounting location and drill a 2-3/8” diameter hole.
c. Epoxy the inside surface of the drilled hole to insure that water will not
be absorbed into the hull in case of water intrusion.
d. After the epoxy cures, insert the neck of the light through the hull. Put
a generous amount of bedding sealant under the outer flange to insure
a watertight seal.
e. Put a generous amount of sealant on the back of the nut and tighten.
f. A bonding screw is attached to the back plate in order for the light to
be attached to the vessel’s grounding system.
g. Attach power cable to fused power source. The 50 watt bulb draws
less than 5 amps at 12 volts.
Note: When installing more than one light an optional relay switch is
available for use up to 4 lights (12 Volt, PERKO Cat. No. 0061DP1RLY
or 24 Volt, PERKO Cat. No. 0061DP2RLY) in order to limit current
through a switch and provide ignition
protection.
3. Changing the Bulb
a. Before attempting to change the bulb, insure that the water in the bilge
is well below the neck of the light. Water must not be allowedto enter
the neck of the light.
b. Loosen the domed cap on the strain relief fitting (see
Diagram 1 below) to allow the rear cap to unscrew without twisting the
power cable.
c. Remove the bonding wire.
d. Unscrew the back plate from the neck and pull out the interior.
Remove the bulb from its socket by pulling straight out. Insert the new
bulb.
e. Replace the interior mechanism, screw on the back plate and tighten
the wire connection and reattach the bonding wire.
Note: Use PERKO replacement bulbs (12 Volt, 50 Watt, 25° Beam:
Cat. No. 0077DP112V or 12 Volt, 50 Watt, 40° Beam: Cat. No.
0077DP212V).
4. Replacing the Lens
a. The vessel must be out of the water to perform this function.
b. Remove the light from the hull.
c. Remove the six screws that hold the head to the body and separate
the two pieces.
d. The lens will pop out. Use a PERKO replacement lens
(Cat. No. 0174DP1LNS) Any other lens may not withstand the
thermal conditions.
e. Reassemble as described in Installation Instructions (Sections 2d, 2e,
2f and 2g).
5. Installation and Removal of Colored Lens Filter
Your underwater light comes with a blue filter, a green filter and 2 black
o-rings. You can easily change the color of the beam by following
these instructions:
Installation
Just forward of the clear lens is a groove machined into the head.
Place the o-ring into that groove, making sure it is firmly seated. Take
the filter color of your choice, and press it so that you feel it seat into
the o-ring. Press all the way around the filter to ensure it is locked in.
When seated, it should be flush with the housing.
Removal
There are several notches in the filter. Pry off the filter with a sharp
object, such as a knife or screwdriver. Be careful not to damage the
o-ring when removing the filter.
CAUTION: FACE OF UNIT (OUTSIDE HULL) MUST BE TOTALLY
SUBMERGED WHILE IN OPERATION IN ORDER TO
PREVENT OVERHEATING AND ACTIVATION OF THE
THERMAL SAFETY SWITCH.
Strain Relief Fitting
Diagram 1
12V, 50 Watt, 25° Beam:
Cat. No. 0077DP112V
12V, 50 Watt, 40° Beam:
Cat. No. 0077DP212V
Replacement Bulbs
IF PRIMARY LENS IS CRACKED, BROKEN OR MISSING OR IF SEAL HAS DETERIORATED,
DO NOT OPEN BACK WHILE BOAT IS IN THE WATER
Loosen & slide back the black grommet securing yellow wire. If a leak occurs, retighten grommet.
Identify and repair problem out of the water.
DO NOT OPEN BACK WHILE LIGHT IS ENERGIZED
CAUTION: