Snap-On Diagnostics DGA 1000, Руководство пользователя

Страница: 71 / 116

Maintenance
4-3
E —Primary Filter Bowl Assembly
•
Removes moisture and other exhaust contaminants that are
potentially harmful to the analyzer.
•
Inspect daily and replace every two week with par t number
7096E9062-77.
— To replace the filter, unscrew the locking ring, which
connects the bowl to the upper housing, to gain access
to the filter.
— Unscrew the filter retainer nut on the bottom, and
remove and install the new filter.
✓
When the filter bowl is removed, be careful not to loosen
or misalign the o-ring seal in the top portion of the filter
housing. If the o-ring does not properly seal, a failed leak
check will occur.
✓
If desired and also recommended, the bowl may be
washed with soap and water. Never use a solvent on the
bowls.
✓
Do not overtighten filter retainer or bowl ring. Snug is fine.
✓
If the water symbol ( ) appears on the left of the
screen or if a low flow symbol ( ) appear at any time
during operation, the primary filter must be replaced
immediately.
— Stop testing and perform sample system
maintenance.
— The low flow ( ) can also be caused by a
plugged sample hose or probe. Check these along
with sample system service.
P —Calibration Gas Inlet
Use this inlet to supply calibration gas to the analyzer.
✓
Pressure at this port must not exceed 10 psi.
S —Clean Air Inlet Port, Charcoal Filter
• A charcoal filter is installed to filter the ambient air going
into the gas bench during calibration.
• Replace yearly with par t number 7096E9061-54.
— To replace the filter, remove the old filter from the tubing
and inser t the new filter.
✓
If one is present, pay attention to the flow arrow.
O
2
Cell and NO Cell Service
Do not attempt to replace these cells on your own. When the
warning icon (
) displays in the lower right of the screen, cell
replacement is required. Contact Equiserv .
✓
Under most conditions, depending on use, the
NO
cell
lasts 15–18 months and the
O
2
cell 12–18 months.