Hallett 30 1” Instruction Manual
Released on 1-Sep-16
– X800058R
Page 15
UV Pure Technologies Inc. © 2016
changes from a normal to alarm condition. The contact is meant for control
purposes only, not to drive devices. The maximum rating of the contact is 1A at
24Vdc Max.. A suppressor or MOV is recommended to be placed across the
leads in DC applications.
There is a knockout provided at the base of the front cover for cable entry. See
Figure 1F. Ensure alarm contact wires stay clear from multicolor ballast output
wires when routing them within unit.
Caution:
Unplug the unit before gaining access to do any wiring.
ELECTRONIC
BALLAST
UV SENSOR ARRAY
FUSE WITHIN POWER ENTRY MODULE
SEE FIGURE 1B
TYPICAL HALLETT UNIT
CAUTION - HANDLE
CAREFULLY TO NOT
DAMAGE GREEN
RIBBON CABLE
DISPLAY RIBBON
CABLE
GRIP CONNECTOR TO
REMOVE
FRONT
COVER
DRY CONTACT TERMINALS
RATED AT 1A/24VDC MAX.
KNOCKOUT
LOCATED
HERE
CIRCUIT BOARD
WITHIN UNIT
Figure 1F
The front cover must be removed to gain access to external alarm contacts.
This is accomplished by removing the screw that secures the top cover.
Remove the top cover.
Gently remove the front cover and hold it a couple of
inches off from the body of the unit. You must disconnect a thin ribbon
cable that powers the display lights
– be careful not to damage it.
Reach in
and disconnect the ribbon cable from the circuit board by grabbing the end black
connector (
never pull on the green cable itself
). The front cover will then
come free.
Proceed with inspection or repair of unit as required.
