IB-106-340
6-16
Disconnect and lock out power before
working on any electrical components.
Disconnect and lock out power before
working on any electrical components.
6-10. SPS 4000 MAINTENANCE AND COMPONENT
REPLACEMENT. These paragraphs describe SPS
4000 maintenance and component replacement proce-
dures. Replacement parts referenced are available from
Rosemount. Refer to Section VIII, REPLACEMENT
PARTS, for part numbers and ordering information.
Install all protective equipment covers
and safety ground leads after equipment
repair or service. Failure to install covers
and ground leads could result in serious
injury or death.
a.
Fuse Replacement. The SPS 4000 has a fuse (17,
Figure 6-11) on the power supply board (18).
Refer to Table 8-3 for replacement fuse specifica-
tions. Perform the following procedure to check or
replace the fuse.
1. Turn off power to the system.
2. Remove screw (7, Figure 6-11) securing
manifold cover lock (6) and remove the lock.
3. Remove manifold cover (14).
4. Remove fuseholder (16) by pushing in the top
and turning 1/4 turn counterclockwise.
Remove fuse (17).
5. After checking or replacing fuse (17), install
fuseholder (16) by pushing in the top and
turning 1/4 turn clockwise.
6. Install manifold cover (14), and secure with
manifold cover lock (6) and screw (7).
b.
Board Replacement. Perform the following
procedure to replace power supply board (18,
Figure 6-11) or interface board (19).
1. Turn off power to the system.
2. Remove screw (7) securing manifold cover
lock (6) and remove the lock.
3. Remove manifold cover (14).
4. Remove two screws (11) attaching spacers (9)
to manifold (5).
5. Being careful not to disconnect the board
wiring, carefully lift power supply board (18)
and interface board (19) from manifold (5)
and set aside. Do not lose O-rings (8) from
the bottom of spacers (9).
6. Tag all leads on the board to be replaced to
simplify installation.
7. See Figure 6-12. If removing the power
supply board, remove the line voltage input
leads from connector J7. Also, unplug
calibration gas 1 solenoid leads from
connector J5, calibration gas 2 solenoid leads
from connector J4, and pressure switch leads
from connector J2.
See Figure 6-12. If removing the interface
board, remove the CAL INITIATE leads
from connector J3, CAL FAIL and IN CAL
leads from connector J4, and logic I/O
handshake connection from connector J5.
8. Remove stop nuts (22, Figure 6-11), washers
(21), and screws (10) securing power supply
board (18) and interface board (19) to spacers
(9).
9. Carefully separate boards (18 and 19).
10. Connect replacement board to board (18 or
19).
11. Install screws (10), washers (21), and stop
nuts (22) to secure power supply board (18)
and interface board (19) to spacers (9).
12. Install all applicable leads in the appropriate
locations on the power supply board or
interface board as shown in Figure 6-12.
13. Install power supply board (18, Figure 6-11)
and interface board (19) into manifold (5).
Align spacers (9) with the mounting holes on
the manifold and secure with screws (11).
Ensure O-rings (8) are installed between the
spacers and the manifold surface.
14. Install manifold cover (14) and secure with
manifold cover lock (6) and screw (7).
Summary of Contents for Oxymitter 4000
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