Replacing Fuses - Martin Exterior 1200 Wash User Manual

7. If replacing an old lamp, remove it from the socket.
8. The new lamp's glass bulb must be perfectly clean. Do
not touch it with your fingers. Clean it using the wipe
supplied with the lamp. A clean, lint-free cloth wetted
with 99.9% isopropyl alcohol may also be used.
9. Holding the new lamp by its ceramic base, insert it
firmly and squarely into the lamp socket.
10. Re-insert the lampholder in its original position, pushing
and twisting it to lock it in place on the three Allen
screws. Check that lamp wiring is also in its original
position.
11. Tighten the lampholder screws.
12. Slide the effects/lamp module back into the housing and
reinstall the slider locks to lock the modules in place.
Push the module back into the housing while tightening the slider locks to ensure that
the module is correctly positioned, and to ensure that the lamp cutout mechanism is
deactivated.
13. Before reinstalling the front cover, check the condition of the seal. Replace with a new
item if the seal is torn, cracked or brittle.
14. Place the front cover and seal firmly against the housing. Adjust the straight sides of
the seal so that they stick out a little, just enough so that you can feel the seal when
you run a finger across the joint.
15. Cross-tighten the cover screws, tightening gradually to a torque of 7 Nm (5.2 ft.-lbs.).
At this torque, the seal will be compressed by about one-third.
16. Reapply power and return the resettable lamp hours and lamp strikes counters to zero.
See "8.5.2: Lamp life and monitoring lamp hours" on page 61.
Lamp alignment is factory-set. If after installing a new lamp the Exterior 1200 Wash has a
noticeable hot-spot or dark area in the centre of the beam, or if the brightest part of the
beam is significantly off-center, the lamp may need to be realigned. Please contact your
Martin Architectural supplier for assistance.

8.6 Replacing fuses

Warning! Switch off the lamp, allow the luminaire to cool with fans running
for 20 minutes, then isolate it from AC power and lock out power before
replacing a fuse.
The Exterior 1200 Wash is protected by two 15 amp slow blow main fuses (P/N
05020050) located in fuseholders behind the rear cover plate. One fuse protects the
connection labelled "Live 1", and one protects "Live 2". If the luminaire fails to respond
when power is applied, one of these may have blown.
64 Exterior 1200 Wash user manual
Figure 22: Lamp socket