Filter
Top Products
Installation, Operation, and Maintenance Manual # 509252 Rev R 71
Switch from
OFF to
STANDBY
BLWR
PRESSURE
indicator lights
Single-phase
voltage missing
phase
See “Basic Checks” on page 65.
Air pressure Measure air pressure inside irradiator
following the procedure described in
Chapter 6, “Maintenance”. IF PRESSURE
IS LOW:
Dirty air filters Replace dirty air filter on remote or
modular blower.
Pressure switch
faulty
Replace the pressure switch.
Air handling design Check for adequate air handling
requirements.
STANDBY
switch does
not light
HV cable
disconnected
Connect HV cable.
No fault
indicators light.
Faulty HV cable Inspect cable, check for continuity.
Control card Replace control card.
LAMP OUT
and/or PWR
IMBAL
indicators light
immediately
Card connectors not
secure
Check control card. All connectors must be
properly secured.
Control card Replace control card.
RF INTLK
indicator lights
or flashes
alternately with
the lamp
control
switches
No RF detector
connected
Connect RF detector. A system must have
at least one RF detector connected.
Programming error:
1. All units have
S1-5 open.
2. Unit(s) with S1-5
open and no jumper
between J105A-3
and J105A-4.
1. Close S1-5 on unit with RF detector
connected.
2. Install jumper.
RF cable shorted or
open
Check cable for continuity.
RF detector faulty Replace RF detector.
Control card Replace control card.
Table 18. Troubleshooting/Fault Diagnosis (continued)
Operation
Signal/
Other
Symptoms
Possible Cause Corrective Action