Use and Care Manual

Preventive Maintenance and Troubleshooting Guidelines for Class 9013F and 9013G Pressure Switches 9013DB0701

Troubleshooting 12/2007

Switch operates

mechanically,

but not

electrically

No power to switch

Apply power to the switch.

Check the circuit breaker and/or disconnect switch. If the breaker is

tripped on a new installation, check the switch wiring. Reset the breaker

(disconnect).

Apply power to the switch.

Confirm the wiring of the switch.

Damaged or improperly

installed wiring

Wired to the wrong contact.

Complete Steps 1–5 of “Providing Routine Maintenance” on page 1.

Wire to the correct contacts.

Corroded or loose connections

Make new connections or tighten the

existing connections.

Damaged switch contacts

Replace the switch contacts or entire

switch.

Contacts overloaded (welded)

Complete Steps 6–10 of “Providing Routine Maintenance” on page 1.

• Remove the pressure switch from

the pipe and confirm that the entry

to the diaphragm is free of silt and

obstructions.

• Confirm that any check valves in the

system between the source and the

pressure tank are functioning

properly.

• Confirm that pressure reading at the

pressure switch accurately reflects

the pressure in the pressure tank.

• Low pressure cut-out (M4) has cut-

out.

• Repair or replace the switch if

defective.

• Clean plumbing and pressure port

(replace if defective).

Table 2: Troubleshooting Tips (continued)

Condition Possible Causes Description/Corrective Action

Corrective Procedure for

Qualified Service Personnel