Introduction - Honeywell CM4 Technical Handbook

CM4 Four-Point Continuous Monitor

8.1 Introduction

The Service Menu provides access to a variety of diagnostic tests
and routine service procedures. The Service Menu contains eight
functions.
4 SERVICE MENU
4.1 RELAY/LED TEST
4.2 ALARM TEST
4.3 DIAGNOSTICS
4.4 RESET SYSTEM
4.5 LOAD Chemcassette
4.6 SET FLOW
4.7 MDA SERVICE
4.8 PUMP LIMITS
Figure 8-1: Service Mode Menu
The following is an overview of each of the eight functions. The following
sections describe each of these functions in detail:
• 4.1 RELAY/LED TEST checks all LED indicators and alarm
relays (see Section 8.2)
• 4.2 ALARM TEST checks alarm LEDs and alarm relays (see
Section 8.3)
• 4.3 DIAGNOSTICS prints out operational information about
the CM4 (see Section
• 4.4 RESE T SYSTEM deletes all operator-programmed
settings and replaces them with the factory default settings
(see Section 8.5)
• 4.5 LOAD Chemcassette
reset the tape counter after loading a new Chemcassette
(see Section 8.6)
CM4 Technical Manual
8.4)
/FILTER CHANGE, if selected, will
®
• 4.6 SET FLOW balances the sample flowrates at each point
from all CM4 sample lines through the system (see
8.7)
• 4.7 MDA SERVICE for use by MDA service technicians only
(see Section 8.8)
• 4.8 PUMP LIMITS (see
8.2 Function 4.1 – Relay/LED Test
Purpose
Use the Relay/LED Test to test all LED indicators and all relays except
the Watch Dog relay.
NOTE:
The relay test simulates an actual alarm condition and the CM4
activates the appropriate connected relays (including point alarms
and general alarms). Notify appropriate personnel that you plan to
conduct a test.
Instructions
1. Press PROGRAM to exit Monitor Mode.
2. From the 4–SER VICE MENU, choose the subfunc tion
1–RELAY/LED TEST.
1 – RELAY/LED TEST
Press 1 again to turn on all fault and alarm relays and all LEDs
Press ENTER to choose either LEDs or relays. The display reads:
1=LEDs ONLY 2=RELAYS
3. Press 1 to light all LEDs.
®
Press 2 to activate all output relays. The display reads:
8-2
Section 8.9)
4 – SERVICE MODE
or
CONFIRM TEST
Section