New Install - Always Pressure Up Slowly (Follow start up on page 10)
Problem
Fluid flowing through system
No Rumbling
Sound
Injector in Operation or After Scheduled Maintenance
Problem
Suction tube (#25) or suction
tube fitting (#11) cracked,
leaking or clogged suction tube
filter
Dosage piston (#44) worn or
No Suction Of
installed incorrectly
Solution
O-ring (#14) damaged
Check valve (#13) leaking
Shaft disconnected
Problem
(#44) Dosage Piston worn
Under
(#37) Inner Cylinder worn
Injecting
Unit operates at high-flow and
not at low flow
Problem
Check poppet (#13) leaking
Fluid
Re-filling
Solution Tank
Washer seal on (#13) is
swollen or chemical attack
English: 14
Troubleshooting
Cause
Fluid rate is below or exceeds rated service flow of injector. (See
Specifications page 6).
If below increase flow rate, if above, reduce flow rate.
If operating pressure does not meet specifications, adjust pressure
accordingly. (see Specifications page 6).
Three valve by-pass valve (A) not closed. Check and set valve to the
Closed position.
Cause
Replace and/or clean as necessary
Replace. Ensure during maintenance replacement that #44 dosage
piston was installed correctly flared-end up.
Replace.
Clean & replace as necessary.
Remove lower end & check shafts and make sure they are connected.
Cause
Replace.
Replace.
Make sure you have minimum flow requirements. Replace wipers
(factory replacement, call Dosmatic Customer Service)
Cause
Check seat area on suction tube fitting #11. Check valve and seal
must fit loose in the suction tube fitting. Clean seal and inside fitting for
debris.
Replace with new check poppet assembly.
Solution
Solution
Solution
Solution