Franklin 2007 Manuel D’Utilisation

 WARNING: Power must be on for these tests. Do not  
   touch any live parts.

1.  Measure voltage at L1 and L2 of pressure switch  

or line contactor.

2.  Voltage Reading: Should be ± 10% of 

motor rating.

1.  Measure voltage at load side of pressure switch 

or line contactor with pump running.

2.  Voltage Reading: Should remain the same except  

for slight dip on starting. Excessive voltage 
drop can be caused by loose connections, bad 
contacts, ground faults, or inadequate 
power supply.

3.  Relay chatter is caused by low voltage or  

ground faults.

If the colors on the individual drop cables cannot be 
found with an Ohmmeter, measure:

 

Cable 1 to Cable 2

 

Cable 2 to Cable 3

 

Cable 3 to Cable 1

Find the highest resistance reading.

The lead not used in the highest reading is the 
yellow lead.

Use the yellow lead and each of the other two leads to 
get two readings:

 

Highest is the red lead.

 

Lowest is the black lead.

 

Cable 1 to Cable 2—6 ohms

 

Cable 2 to Cable 3—2 ohms

 

Cable 3 to Cable 1— 4 ohms

The lead not used in the highest reading (6 ohms) was

 Cable 

3—Yellow

From the yellow lead, the highest reading (4 ohms) was

 

To Cable 1—Red 

From the yellow lead, the lowest reading (2 ohms) was

 

To Cable 2—Black

1.  Measure current on all motor leads.

2.  Amp Reading: Current in red lead should 

  

momentarily be high, then drop within one second 
to values in table 13. This verifi es relay or solid 
state relay operation. Current in black and yellow 
leads should not exceed values in table 13.

3.  Relay or switch failures will cause red lead 

current to remain high and overload tripping.

4.  Open run capacitor(s) will cause amps to be 

higher than normal in the black and yellow motor 
leads and lower than normal in the red 
motor lead.

5.  A bound pump will cause locked rotor amps and  

overloading tripping.

6.  Low amps may be caused by pump running at  

shutoff, worn pump, or stripped splines.

7.  Failed start capacitor or open switch/relay are 

indicated if the red lead current is not  

 

momentarily high at starting. 

CAUTION: The tests in this manual for components such as capacitors, relays, and QD switches should be 
regarded as indicative and not as conclusive. For example, a capacitor may test good (not open, not shorted) but 
may have lost some of its capacitance and may no longer be able to perform its function. 

To verify proper operation of QD switches or relays, refer to operational test procedure described above
in Section B-2.

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