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Instruction Manual
D200354X012
3. Check voltages V2 and V3 as described in table 6:
a. If either or both of the voltages are not present, field repair of the instrument is not recommended. Return the
instrument to the factory for repair.
b. If V2 and V3 are correct, continue with the following steps:
4. Perform the high and low position switch calibration procedures in the Calibration section.
5. If the position switches cannot be set, replace the field circuit printed wiring board (figure 11) or return the
instrument to the factory for repair.
Printed Wiring Board Removal and Replacement
WARNING
Refer to the Maintenance WARNING at the beginning of this section.
NOTICE
Electrostatic voltages present in the environment may be transferred to the transmitter printed wiring board which may
cause failure or degraded performance. Use appropriate antistatic procedures when working with the printed wiring board
to protect the electronic circuits.
Figure 11. Housing Assembly for Fisher 4210, 4215, or 4220 Transmitter with Position Switches and 4212 or 4222
Position Switches without Transmitter
APPLY LUBRICANT OR SEALANT
NOTES:
1 KEY 17 IS LOCATED BETWEEN THE TERMINAL POST BASE AND THE DEVICE HOUSING.
2 ON 4212, 4222, USE KEY 35 INSTEAD OF KEY 17/19 AT THE "-"FEEDTHROUGH POSITION, OMIT KEY 10.
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4200 Transmitters
September 2022
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