Troubleshooting - DOSMATIC MICRODOS II 2% Manual De Operación

Instruções Para Manutenção De Rotina
↓
Step 2.
Step 1.
Unscrew #52 lower shaft
Unscrew #7 OUTER CYLINDER
from body. using Dosmatic 6-1 lower
wrench (supplied).
Step 4. Step 5.
Replace #44 DOSAGE PISTON, Replace #14 O-RING
Step 6. Step 7.
Re-install #52 LOWER SHAFT, #14
Replace #17 O-RING and re-
O-RING and #44 DOSAGE PISTON
install and tighten #88 O-RING
SUPPORT NUT
Portugês: 60
2%
↓
Step 3.
Remove #52 LOWER SHAFT, #14
O-RING and #44 DOSAGE PISTON
Step 6
Remove #88 O-RING SUPPORT NUT
using Dosmatic 6-1 lower wrench.
↓
Step 8.
Screw #7 OUTER CYLINDER onto
body.

Troubleshooting

New Install - Always Pressure Up Slowly (Follow start up on page 9)
Problem 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.
Fluid not flowing through unit
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
No Clicking
Service.
Sound
Fluid rate is below or exceeds rated service flow of injector. (see Specifications
for maximum flow rate page 6).
If below increase flow rate, if above, reduce flow rate.
Fluid flowing through unit
Operating pressure exceeds maximum limit. Install a pressure reducer valve.
(see Specifications for maximum flow 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 ON position.
Injector in Operation or After Scheduled Maintenance
Problem Cause
Main Piston Assembly #9 worn
Cover #1 or main body #40 worn
or scored
No Clicking
On/Off Lever in off position
Sound
By-Pass Valve not open
Dirty or plugged inlet filter
#17 Worn or not seated properly
Problem Cause
Cracked or loose Suction Hose
Dosage piston #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
#44 (0.3% model #51) damaged
Solution
#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 Cause
#44 (0.3% model #51) Dosage
Piston worn
Clicking
#7 Inner Cylinder worn
Sound.
Unit operates at high-flow and not
at low flow
Under
Main Piston Assembly #9 worn
Injecting
Cover #1 or main body #40 worn
or scored
Problem Cause
Check valve #13 leaking
Fluid
Re-filling
Washer seal on #13 is swollen or
Solution Tank
chemical attack
Solution
Solution
Replace # 9 Main Piston Assembly. Clean fluid filter.
Lightly sand inside diameter of bores to remove grooves. Install or clean
fluid filter.
Place the On/Off lever switch to the ON position.
Set Valve to the closed position.
Ensure mesh size is correct for proper filtration. Clean filter.
Re-seat #17 or replace.
Solution
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.
Solution
Replace.
Replace.
Replace #17 O-ring.
Replace # 9 Main Piston Assembly. Clean fluid filter.
Lightly sand inside diameter of bores to remove O-ring grooves. Install or
clean fluid filter
.
Solution
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.
English: 13