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© 2014 AMTROL Inc. Part #: 9017-099 (01/14)
11. Pump out water remaining in very bottom of tank.
12. Wash down inside walls of tank as necessary.
13. Mop up remaining water.
14. Dry out inside of tank (reversed vacuum cleaner or air line
from a compressor).
15. Clean out any remaining dirt.
16. Examine interior for any rust blisters and remove them.
17. Roll up the new AMTROL
®
bladder and tape as necessary
intervals to keep it rolled (Figure 6).
18. Insert new bladder removing tape as it nears the tank.
19. Arrow on bladder flange must be pointing to top of tank
(Figure 5).
20. Using a long wooden stick (broom handle), clear a path for
the dip tube/hose.
FAILURE TO PROPERLY SEAL VALVE
CAP WILL RESULT IN LOSS OF PRE-
CHARGE CAUSING TANK TO FAIL.
21. Insert dip tube/hose in bladder and assemble upper flange
using alignment marks from Step 6.
DANGER! EXPLOSION HAZARD. IF YOU
ADJUST THE PRE-CHARGE PRESSURE
OR ADD PRESSURE TO A TANK IS CORRODED OR DAMAGED
OR WITH DIMINISHED INTEGRITY THE TANK CAN BURST OR
EXPLODE, POSSIBLY CAUSING SERIOUS OR FATAL
PERSONAL INJURY AND/OR PROPERTY DAMAGE.
•ONLYADJUSTTHEPRE-CHARGEASDESCRIBEDINTHIS
MANUAL WHEN THE TANK IS NEW OR WHEN THE INTEGRITY
OF THE TANK AND LACK OF INTERNAL OR EXTERNAL
CORROSION IS CONFIRMED.
•ONLY QUALIFIED PROFESSIONALS SHOULD CHECK,
ADJUST OR RE-CHARGE THE PRE-CHARGE OF TANKS.
22. With flanges aligned, tighten bolt evenly. Torque to
40-50 ft. lbs.
23. Install drain plug (Fig. 2) using a liberal amount of TITE-
SEAL COMPOUND 55 or equal. This connection must be
absolutely airtight.
24. Install air valve core. Charge tank to fill-pressure or mini-
mum operating pressure using dry air or nitrogen.
IMPORTANT: If increasing pre-charge pressure
above 55 psig the following steps must be followed:
a. Tank must be connected to the system with isolation
valve open.
b. System must be pressurized to 13-14 psig, slightly
above factory setting.
c. Isolation valve needs to be shut.
d. Pre-charge pressure of tank can now be increased to
match system fill pressure.
e. Open isolation valve and start up system.
Failure to follow these steps could result in damage
to the bladder and void all warranties.
25. Using soapy water, check the drain fitting threads, air valve
core and flange joint for leakage.
26. Connect tank to system. Open fill-valve and check operation.
FAILURE TO FOLLOW ALL WARNINGS MAY RESULT IN SERIOUS
INJURY OR FATAL PERSONAL INJURY AND/OR PROPERTY
DAMAGE AND WILL VOID THE WARRANTY.
Warranty
L Series Models: One (1) Year Limited Warranty
Visit www.amtrol.com for complete warranty details.
Required Tooling & Supplies:
1. Plumbers Tool Box
2. Source of Compressed Dry Air or Nitrogen
3. Portable pump with 20 ft. suction hose
4. Light with 20 ft. Cord
5. Power Extension Cord (as required)
6. Chain Block
7. Pressure Gauge and Air Valve Tool
(to remove valve core)
8. New AMTROL Bladder
9. Long wooden stick (broom handle)
at least 1 ft. longer than tank height
ARROW
DOME
TOP
BLADDER
Figure 5
Figure 6
Mark of the
Originator
1400 Division Road, West Warwick, RI USA 02893
T: 800.426.8765 F: 800.293.1519
www.amtrol.com