Troubleshooting - Dover Hydro Systems SuperDos 20 Manual De Operación

New Install - Always Pressure Up Slowly (Follow start up on page 9)
Problem
Fluid not flowing through system
No Clicking
Sound
Fluid flowing through system
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 (A) not closed
Sound
Dirty or plugged inlet filter
#17 Worn or not seated properly
Problem
Cylinders #7 or #68 worn.
Dosage piston/gasket (WSP model)
#44 (0.3% model #51) worn or
installed incorrectly
Clicking O-ring retainer #15 installed
incorrectly
Sound
O-ring seat #14 or dosage piston/
No Suction Of
gasket #44 (0.3% model #51)
Solution
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 (WSP model) worn
Clicking
#7 (#68 - 0.3%) Inner Cylinder worn Replace.
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

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.
If still not clicking, do not open the upper body. Call Hydro Systems
Customer Service.
Fluid rate is below or exceeds rated service flow of injector. (see
Specifications page 6).
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 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 (A pg.9) 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 (A) to the closed position.
Ensure mesh size is correct for proper filtration. Clean filter.
Re-seat #17 or replace.
Cause
Replace.
Replace. Ensure during maintenance replacement that #44 was
installed correctly flared-end up.
Install correctly.
Replace.
Replace.
Replace and/or clean as necessary.
Clean & replace as necessary.
Cause
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
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Solution
English: 13