Product Manual


Best Pracces

extending the life of your 400 series pump.
Roune Annual Maintenance or as needed.

 

2. Drain oil through sight caps and replace oil with



located on the front of the pump body.
NOTE:
NOTE:

head screws to 50 in lbs.
CAUTION! All pumps should operate at the rated

the pump from a dedicated circuit with 15 amp circuit







AC Only
 
 

A. All wiring must be done by a licensed electrician in

 

C. Circuit must be grounded.
 
WARNING! Do NOT disable ground prong. 
or bypassing the ground prong on a plug eliminates



WARNING! DO NOT disassemble the yoke assembly. 
is under extreme pressure, and serious injury or death

WARNING! 

DO NOT USE
PRESSURIZED WATER OR PRESSURIZED AIR
your Sotera Systems pumps. Damage to the equipment





IMPORTANT! Do not allow chemicals to remain in the

chemicals area allowed to “dry out.” Thoroughly rinse


IMPORTANT! 

for the diaphragms. Certain repair and maintenance
procedures require draining of the oil, while others do





Diaphragm Assembly/Check Valve Replacement
IMPORTANT! 


is important during this procedure to make sure no debris
or contaminants fall into the oil.
1. 

 

 
of pump body; be careful not to damage surface of body.
 

 

 Hand start

CAUTION! USE CARE

damage to the pump body. DO NOT pry the diaphragm

sharp or metal tools. Scratching or otherwise damaging
the pump body may cause leaks.
WARNING! Always switch pump o and disconnect
from power source prior to servicing