CM4 Four-Point Continuous Monitor
CM4 Technical Manual
9-2
9.1 Introduction
The Maintenance Section includes:
• Chemcassette
®
Maintenance covers the Chemcassette
®
,
Chemcassette
®
carrier, optics verification, and flowrate check
(Section 9.2)
• Filter maintenance covers the replacement of CM4 filters
(
)
• Fuse replacement (
)
• Cleaning Chemcassette
®
optics (
• Installing Microtube assemblies (
)
NOTE:
Prior to performing any maintenance procedure, leave Monitor
Mode. (See
CAUTION
For system integrity, always perform a leak test after any maintenance
procedure. See
for leak check procedure.
9.2 Chemcassette
®
Maintenance
This section describes maintenance and handling procedures for the
Chemcassette
®
and the Chemcassette
®
carrier.
Perform the following functions when replacing a Chemcassette
®
tape:
• Remove carrier
• Verify optics
• Load new Chemcassette
®
in carrier
• Install Chemcassette
®
• Check flowrates
9.2.1 Remove Carrier
To remove the Chemcassette
®
carrier from the CM4:
1. Press PROGRAM to exit Monitor Mode.
2. From the 4–SERVICE MENU, Choose the subfunction 5–LOAD
Chemcassette
®
.
4 – SERVICE MODE
5 – LOAD Chemcassette
If Chemcassette
®
counter is disabled, proceed to step 6. If
Chemcassette
®
counter is enabled, the screen displays:
RESET COUNTER 1=Y
3. Press either:
• 1 to re-initialize the counter so that the display shows a fault
when less than 24 hours of Chemcassette
®
remains
or
• 0 to continue without resetting counter
If the internal filter timer is active (see
), the screen
displays:
INT FILTER RESET 1=Y
4. Press either:
• 1 to reset the timer after servicing the filters (see
)
or
• 0 to continue without resetting timer
If the external filter timer is active (see
) , the screen
displays:
EXT FILTER RESET 1 = Y
珠海司福斯特科技有限公司
www.safedtech.com