Peerless Pump Sealtrode P Series, Instructions Manual

OPERATION 

As the liquid level rises in the wet well, a hydrostatic 
pressure on the flexible bulb is exerted. The hydrostatic 
pressure tends to squeeze the bulb, causing a 
displacement of its liquid. The displaced liquid rises in 
the electrode housing toward the electrodes. The liquid 
level within the electrode housing will always be equal to 
the level of the liquid in which the controller is 
submerged, since the density of both liquids are equal. 
As the liquid within the electrode housing rises and falls, 
it makes a and breaks electrical circuits with the 
electrodes, thereby actuating the pump starters through 
the controller relays.  
 

CAUTION  

This controller should not be used in  liquids having  a 
temperature exceeding 140º F. or less than 35º F. 
 

MAINTENANCE 

The SEALTRODE r Series P Controller, if properly in-
stalled, requires little or no maintenance. It has no 
moving parts, except for the control relays which should 
be inspected semi-annually for worn or pitted contactors.  
 
It is recommended that the operation of the controller be 
observed for several complete operating cycles when 
making routine maintenance and inspection of the pump.    
 

REFILLING FLEXIBLE BULB: 

The electrolytic solution 

within the control bulb should seldom, if ever, be 
replenished because of evaporation. However, should it 
become necessary to replenish the liquid within the bulb, 
proceed in the following manner: 
1. Refer to installation print showing the setting of the 
electrodes. 
2. Note the setting of the highest electrode and what 
circuit it controls. 

WARNING  

Before attempting repairs to installation, disconnect the 
power supply. Controls are automatic. This prevents 
accidental running of pump motor. Starting motor during 
repair activities could damage pump and may cause 
personal injury. 
3. Disconnect all electrical devices (pump starters) which 
are not controlled by the highest electrode to prevent 
their operation  during  the process of refilling  the  bulb. 
4. Fill the basin to the highest electrode setting and then 
slowly pour distilled water thru the tee. Fill the 
connection until the high electrode circuit operates. 
When the circuit operates, add an additional quart of 
water. 
5.  In the event that the bulb has been over-filled, and 
the pumps do not cut-off, remove and empty the bulb 
and refill as outlined on page 3 under the heading “Filling 
Flexible Bulb”. 
 
 

LOCATING TROUBLE 

 
IF THE PUMP FAILS TO START: 

1. Make sure sodium bicarbonate has been added to 
water. 
 
2. Check the electrical service, making sure the current 
characteristics are the same as that stamped on the 
control box nameplate. 
 
3. Check to see if the control wiring is in accordance with 
the wiring diagram supplied with controller. 
 
4. Determine if the electrical power at the control box 
has been interrupted or disconnected. 
 
5. Check set screw (14) and make certain it is right.   
 
6. Short circuit the pump start electrode terminals in the 
control box with a piece of insulated wire. This should be 
done by a qualified electrician. If the pump operates 
check the following: 
 

a.  Inspect the wiring from the terminals in the  control  
box to the controller terminal housing making sure that 
all connections are clean and tight. Look for broken 
wires.  
b.  Check  the  wire  connections  at  the electrodes to 
see if they are broken. 
c.  Check   to   see   if   the   flexible   bulb   has  been 
damaged. If the bulb is damaged, liquid from the basin 
may have entered the housing and coated the 
electrodes with grease or oil. Grease and oil will 
insulate the electrodes. 
d.  Check the bulb for loss of electrolytic solution. 
e.  Check the setting of the pump cut-in electrode. It 
may be set too high. 
f. 

Check for proper open venting of housing. 

 
7. If the pump fails to operate after short circuiting the 
electrode terminals in the control, check the following: 

a. Check the ground wire, making sure that it is not 

broken and terminal connections are clean and tight. 
   b. Check the control box for burned out transformer or 
relay coils. 
   c. Check the relay contacts to see if they are corroded, 
worn or pitted. 
 
8. If the pump fails to cut off check the following: 
   a. Check the wire connections and insulation in the 
terminal housing and control box, making sure they are 
not forming a short circuit by being grounded to the box 
or housing. 
   b. Check the electrodes, making sure they are properly 
shielded. An electrode not properly shielded may form a 
short circuit with the electrode housing. 
   c. Check the relay contacts in the control box to see if 
they are stuck. 
   d. Too much liquid in the flexible bulb. Excessive liquid 
in the bulb will keep the low pump cut-off electrode 
submerged and the pump cut-in relay will not open. 

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