Troubleshooting - DOSMATIC MINIDOS 0.4 Mode D'emploi

New Install - Always Pressure Up Slowly (Follow start up on page 9)
Problem
No Clicking
Sound
Injector in Operation or After Scheduled Maintenance
Problem
No Clicking
Sound
Problem
Clicking
Sound
No Suction Of
Solution
Problem
Clicking
Sound.
Under
Injecting
Problem
Fluid
Re-fi lling
Solution Tank
English: 16

Troubleshooting

Cause
Are the red plugs at the inlet, outlet and suction tube fi tting openings removed?
Is the unit installed backward? The arrow on the unit must point in the
direction of the fl uid fl ow.
Fluid not fl owing through unit
Has the new injector been stored for an extended period. If so, submerge the
injector in room temperature water for 24 hours so that the working parts can
reabsorb fl uid 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 fl ow of injector. (See Specifi cations
page 6).
If below increase fl ow rate, if above, reduce fl ow rate.
Fluid fl owing through unit
Operating pressure exceeds maximum limit. Install a pressure reducer valve.
(See Specifi cations for maximum fl ow rate page 6).
On/Off Lever in off position. Place the On/Off lever switch to the ON position.
By-Pass Valve not closed. Check and set valve to the OFF position.
Cause
Main Piston Assembly #9 worn
Cover #1 or main body #40 worn
or scored
On/Off Lever in off position
By-Pass Valve not closed
Dirty or plugged inlet fi lter
#17 Worn or not seated properly
Cause
Suction tube #25 (#60 - 20%) or
suction tube fi tting #11 cracked,
loose, leaking or clogged suction
tube fi lter.
Dosage piston #44 worn or
installed incorrectly, inner cylinder
#37 (#68 - 1% & #7 - 20%) worn
O-ring retainer #82 (#15 - 10% &
20%) installed incorrectly
O-ring seat #14 or dosage piston
#44 damaged or worn
Check valve #13 (#60 - 20%)
leaking.
Cause
#44 Dosage Piston worn
#37 (#7 - 20%) Inner Cylinder worn
Unit operates at high-fl ow and not
at low fl ow
Main Piston Assembly #9 worn
Cover #1 or main body #40 worn
or scored
Cause
Check valve #13 leaking
Washer seal on #13 is swollen or
chemical attack
Hose Kit #60 (20%) leaking
Solution
Solution
Replace # 9 Main Piston Assembly. Clean fl uid fi lter.
Replace and install or clean fl uid fi lter.
Place the On/Off lever switch to the ON position.
Set Valve to the closed position.
Ensure mesh size is correct for proper fi ltration. Clean fi lter.
Re-seat #17 or replace.
Solution
Check for proper fi t, replace and/or clean as necessary.
Replace. Ensure during maintenance replacement that #44 dosage
piston was installed correctly fl ared-end up.
Install correctly.
Replace, on 0.4% models replace #51 Shaft Assembly.
Clean & replace as necessary.
Solution
Replace, on 0.4% models replace #51 Shaft Assembly.
Replace.
Replace #17 O-ring.
Replace # 9 Main Piston Assembly. Clean fl uid fi lter.
Replace and install or clean fl uid fi lter
Solution
Check seat area on suction tube fi tting #11. Check valve and seal must
fi t loose in the suction tube fi tting. Clean seal and inside fi tting for debris.
Replace with new check valve assembly.
Replace
.