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PELCO Manual C460M-E (7/95) 13
4.4.2 Mounting the ED29/ED2920 Series
The ED29/ED2920 Series domes require a suitable
length of 1-1/2-inch NPT threaded pipe (not supplied)
for mounting. The dome can be attached to any wall or
ceiling capable of supporting the full weight of the
mount, pan/tilt, camera/lens, and enclosure. We suggest
using the MRWA wall mount or MRCA ceiling mount.
Follow the instructions provided with the mount.
4.5 LIMIT/STOP ADJUSTMENTS
To adjust the pan/tilt limits, refer to Section 8.4, of this
manual.
5.0 CARE AND MAINTENANCE
Regularly scheduled maintenance will prolong the op-
erational life and appearance of the equipment.
IMPORTANT: The lower dome of the Harris
Dome is an optical surface. When cleaning the
inner surface of the dome and viewing window,
treat as carefully as you would a fine camera lens.
1. If dust or other debris accumulates on the inside of
the lower dome, remove them with clean air pres-
sure. Compressed air cans are available from com-
mercial photographic equipment and supply deal-
ers.
WARNING: Do not use water, liquid or spray
cleaners of any kind on coated inner-
surface of dome.
2. Clean the outer surface of the dome and the inner
surface of the viewing window with a nonabrasive
cleaning cloth and antistatic cleaner that is safe for
use on acrylic plastic. Do not use kerosene or
similar substances that can scratch the surface.
5.1 RECOMMENDED EQUIPMENT
AND TOOLS
1. Voltmeter or Ohmmeter
2. Allen Wrench Set
3. Wrench Set
4. Flat Blade and Phillips Head Screw Drivers
5. Pliers, Long Nose
5.2 SERVICE TIPS
Some common problems encountered with pan/tilt sys-
tems include miswiring, overloading, and not using the
units for the correct applications. If a failure occurs, it is
recommended that the following procedures be used.
1. If the pan/tilt ceases to operate, turn the control unit
off and remove the AC cord from the outlet.
2. Check the fuse in the control unit using either a
voltmeter or ohmmeter. If open (blown), replace
with the proper recommended fuse.
3. Replace the AC cord in the outlet and turn the
control on. If the fuse continues to open (blow),
turn the unit off.
4. Check the control cable between the control unit
and pan/tilt for shorts, high resistance, or opens.
5. If the control cable is found to be good, replace the
connector to the control unit, leave the connector
off the pan/tilt, and replace the fuse.
6. Operate the control unit when it is disconnected
from the pan/tilt. If the fuse continues to “blow” the
fault is in the control. Refer to the appropriate
service manual for the control being used.
7. Check the wiring harness in the pan/tilt for shorts.
8. If the wiring harness is found to be good, then the
problem is internal to the unit; consult factory.