Testing & Troubleshooting; System Testing & Troubleshooting; Initial Operational Checkout; System-Level Faults And Troubleshooting Procedures - Whelen Engineering Company IPS 400 Product Manual

Section 8 TESTING & TROUBLESHOOTING
8.0 System Testing and Troubleshooting
Throughout this section, testing and troubleshooting pertain to operational checkout procedures and fault-isolation
procedures. Successful completion of the operational checkout verifies proper operation of the IPS. Tables 8-1 through 8-
2 correlate faults to isolation procedures and associated corrective action. Troubleshooting procedures are presented
under the assumption that there is but one malfunction at a time. After all repairs are made, an operational checkout of
that malfunctioning module should be repeated to make sure that any module replacement did not introduce a new
malfunction.
The silent test feature is the key to system checkout and testing. If the SI TEST® does not isolate the problem, follow the
procedures below to assist in further fault isolation testing and troubleshooting. If the procedures in these subsections do
not isolate the fault, a more detailed diagnostic/testing tool, the MDK-864, or Microprocessor Diagnostic Keyboard, is
used by a trained technician to isolate the problem.

8.1 Initial Operational Checkout

PROCEDURE NUMBER
AND TOPIC
1: Batteries
2: AC Service
3: Power Check
4: Functional Observation

8.2 System-Level Faults and Troubleshooting Procedures

The system-level faults, isolation procedures and corrective actions are intended to assist in isolating the cause and
location of a failure within the IPS control cabinet, as well as any associated warning devices.
In troubleshooting on the IPS, the user is reminded that certain procedures and tests may cause the IPS to produce an
audible signal. The user should exercise discretion regarding the production of warning signals. Most of the
troubleshooting procedures may be performed without producing an audible signal.
PROCEDURAL ACTIVITIES
Check the series connection between the batteries in the IPS lower compartment.
Make sure there is a proper connection between the AC service and the AC workbox.
If there is a dedicated AC disconnect switch, ensure that the switch is in the ON position.
Activate a local SI TEST® to verify that the IPS is operating properly.
NOTE
27