Käyttöopas Emerson Satelliittiradio 1154 [41/60 Sivut]

Emerson satelliittiradio 1154

Reference Manual

00809-0100-4514, Rev BA

January 2008

5-7

Rosemount 1154

Preliminary 1. Replace the cover O-rings (2) whenever you remove a cover. Clean

the sealing areas with alcohol, if necessary, and lightly grease the

O-ring with Dow Corning 55 Silicone O-ring Grease (Rosemount P/N

01153-0248-0001 or P/N 01153-0053-0001). Spray the inside threads

of the electronics covers with cover lubricant (Rosemount P/N

01153-0333-0001 or equivalent) if necessary; if covers are already

sufficiently lubricated, do not spray.

2. Verify that the circuit boards are clean.

3. Verify that the bayonet pins on the connection board are clean.

4. If you remove the sensor module, clean the thread sealant from the

sensor module threads, lock nut, and electronics housing threads

with a wire brush.

Connecting the Electrical

Housing to the Sensor

Module

1. Run the lock nut down to the base of the sensor module threads.

2. Apply a heavy, continuous bead (about

/8-in. wide) of Loctite

580-PST sealant (RMT P/N 01153-0329-0001) around the top sensor

module threads.

3. Insert the header assembly board (4) through the hole in the bottom

of the electronics housing.

4. Screw the sensor module (12) into the electrical housing (3) making

sure that five full threads are engaged. Be careful not to damage or

twist the sensor leads. Turn the header board to avoid

twisting wires.

5. Align the sensor module with the high and low pressure sides

oriented per Figure 2-5 on page 2-7. Alternately, tighten the module

one-half turn further to reverse the orientation of the module about the

electronics housing.

6. Tighten the lock nut (9) to 35 ft-lb (48 N-m) torque.

7. Wipe off excess sealant.

8. Place the assembled unit in an oven at 200 ±5 °F (93 ± 3 °C) for 12

hours to cure the sealant.

Electrical Housing

Reassembly

1. Replace the zero and span adjustment screw O-rings (19) whenever

you remove the zero and span adjustment screws (16). Lightly grease

the O-rings with Dow Corning 55 Silicone O-ring Grease (Rosemount

P/N 01153-0248-0001 or P/N 01153-0053-0001). Reinstall the

adjustment screws and secure with snap rings (18).

2. Align the zero and span adjustment screws with the potentiometer

stems on the calibration board (5) and push the calibration board onto

the bayonet pins.

3. Slide the header assembly board (4) onto the bayonet pins with the

component side toward the pins. Slide any excess wire behind the

calibration board, taking care to avoid kinks.

4. Push the amplifier board (6) onto the bayonet pins and secure with

holding screws (7). Use nominal torque of 10 in-lb (1.1 N-m).

5. Carefully replace the cover and tighten to 16.5 ft-lb (22.4 N-m)

(“Preliminary” on page 5-7).

6. Replace the nameplate (17), and secure with two nameplate

screws (20).

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