Dover HydroSystems Superdos 15 5 운영 매뉴얼 - 페이지 12
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Troubleshooting
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
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 incorrectly
Clicking Sound
O-ring seat #14 or dosage piston/
No Suction
gasket (for WSP models) #44
of Solution
(0.3% 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
#44 (0.3% model #51) Dosage Piston/
gasket (for WSP models) worn
#7 Inner Cylinder worn
Clicking Sound.
Unit operates at high-flow and not
Under Injecting
at low flow
Main Piston Assembly #9 worn
Cover #1 or main body #40 worn or
scored
Fluid
Check valve #13 leaking
Re-filling
Washer seal on #13 is swollen
Solution Tank
or chemical attack.
12
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
re-absorb fluid and swell back to the proper size.
If still not clicking, do not open the upper body. Call Hydro 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.
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.
Replace.
Replace.
Replace #17 O-ring.
Replace #9 Main Piston Assembly. Clean fluid filter.
Replace and install or clean fluid filter.
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