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Idiomas disponibles
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Idiomas disponibles

New Install - Always Pressure Up Slowly (Follow start up on page 8 and 9)
Problem
Fluid not flowing through unit
No Clicking
Sound
Fluid flowing through unit
Injector in Operation or After Scheduled Maintenance
Problem
Main Piston Assembly #9 worn
Cover #1 or main body #40 worn
or scored
No Clicking
By-Pass Valve not closed
Sound
Dirty or plugged inlet filter
#17 Worn or not seated properly
Problem
Cracked or loose Suction Hose
Dosage piston/gasket (for WSP
models) #44 (0.3% model #51)
worn or installed incorrectly.
O-ring retainer #15 installed
Clicking
incorrectly
Sound
O-ring seat #14 or dosage piston/
No Suction Of
gasket (for WSP models) #44 (0.3%
Solution
model #51) damaged
#17 O-ring worn and/or loose
Suction tube #25 or suction tube
fitting #11 cracked, leaking or
clogged suction tube filter
Check valve #13 leaking:
Problem
#44 (0.3% model #51) Dosage
Piston/gasket (for WSP models)
worn
Clicking
#7 Inner Cylinder worn
Sound.
Unit operates at high-flow and not
Under
at low flow
Injecting
Main Piston Assembly #9 worn
Cover #1 or main body #40 worn
or scored
Problem
Check valve #13 leaking
Fluid
Re-filling
Washer seal on #13 is swollen or
Solution Tank
chemical attack.
English: 12

Troubleshooting

Cause
Are the red plugs at the inlet, outlet and suction tube fitting openings
removed?
Is the unit installed backward? The arrow on the unit must point in the
direction of the fluid flow.
Has the new injector been stored for an extended period. If so, submerge
the injector in room temperature fluid for 24 hours so that the working
parts can reabsorb fluid and swell back to the proper size.
If still not clicking, do not open the upper body. Call Dosmatic Customer
Service.
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.
Operating pressure exceeds maximum limit. Install a pressure reducer
valve. (See Specifications page 6).
By-Pass Valve not closed. Check and set valve to the OFF position.
Cause
Replace #9 Main Piston Assembly. Clean fluid filter.
Replace and install or clean fluid filter.
Set By-Pass Valve to the closed position.
Ensure mesh size is correct for proper filtration. Clean filter.
Re-seat #17 or replace.
Cause
Check for proper fit and /or replace.
Replace. Ensure during maintenance replacement that #44 dosage
piston was installed correctly flared-end up.
Install correctly.
Replace.
Replace.
Replace and/or clean as necessary.
Clean & replace as necessary.
Cause
Replace.
Replace.
Replace #17 O-ring.
Replace #9 Main Piston Assembly. Clean fluid filter.
Replace and install or clean fluid filter
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 valve assembly.
Solution
Solution
Solution
Solution
.
Solution
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