Moen 3371 User manual

3371
ExactTemp
Service Manual
# 153768 - 5/10
©2010 Moen Incorporated • 25300 Al Moen Drive • North Olmsted, OH 44070-8022 U.S.A.
In Canada Moen Inc. • 2816 Bristol Circle • Oakville, Ontario L6H5S7
# 153768

Installation of the cartridge:
1. Verify that the cartridge is properly set by aligning the drilled hole in
the cartridge stem to the indent on the cartridge body.
2. Assemble the temperature limit stop to the cartridge ensuring that
the key on the temperature limit stop is aligned to the slot in the cartrige.
3. By pushing on the front of the temperature limit stop, insert cartridge into
the valve body until the temperature limit stop key is fully seated into the valve.
page 4page 11
CARTRIDGE SERVICING EXPLODED VALVE DIAGRAM
CARTRIDGE DIAGRAM
1 2 3
5
4
1
2
4
5
6
7
8
9
3
1. Check Valve 6. Handle Adapter Nut
2. Stop Body 7. Spring
3. Stop Stem 8. Stem
4. Temperature Limit Stop 9. Screw
5. Cartridge Nut
For service kit numbers refer to moen.com
1. Bottom O-Ring 5. Pre-Set Temperature Alignment
2. Middle O-Ring Markings (105˚)
3. Top O-Ring
4. Screens

No flow or reduced flow Reduced flow or
no flow from device
Stop stems are closed Turn stop stems
counterclockwise
No flow or reduced flow Reduced flow or
no flow from device
Blocked screens on
cartridge
Remove cartridge and
rinse. See “Cartridge
Servicing” (pg 9).
Outlet water
temperature too high
Water is hotter than
105˚F at safety stop or
120˚F in full hot
Cartridge is out of
calibration
Remove cartridge and
rinse. See “Cartridge
Calibration” (pg 7).
Outlet water
temperature too high
Water is hotter than
105˚F at safety stop or
120˚F in full hot
Missing or damaged
bottom o-ring
Replace cartridge.
See “Cartridge
Servicing” (pg 9).
Leak from around the
cartridge
Continuous leak from
behind trim
Cartridge has missing
or damaged top
o-ring.
Replace cartridge.
See “Cartridge
Servicing” (pg 9).
Leak from around the
cartridge
Continuous leak from
behind trim
Missing or loose
cartridge nut
Replace or tighten
cartridge nut.
See “Cartridge
Servicing” (pg 9).
All hot or all cold water Temperature
adjustment does not
provide mixed
temperature
Inlets are reversed
Reinstall with hot water
line to hot side of the
valve and cold water
line to cold side of the
valve.
No temperature stop
detected
Handle rotates greater
than 200˚ and does
not engage a stop
Temperature limit stop
is not properly seated
in the valve
Reassemble
temperature limit stop.
See “Cartridge
Servicing” (pg 9).
page 10page 5
TROUBLE SHOOTING CARTRIDGE SERVICING
Removal of cartridge continued:
5. Using a 1-1/4” socket, remove the cartridge retaining nut by turning
counterclockwise.
6. Remove temperature limit stop.
7. Remove cartridge by using a wrench to pull out the cartridge.
1
Problem Description Cause Fix
2

page 6page 9
CARTRIDGE CALIBRATION
Rotate the temperature control counterclockwise from the coolest setting (80˚ F) at
the 7:00 position to the safety stop setting (105˚ F) at the 12:00 position.
Push in the end of the stem to activate the safety stop override, then rotate the
stem counterclockwise from (105˚ F) at the 12:00 position to the maximum
temperature (120˚ F) at the 9:00 position. (fig.1)
Use a thermometer to test the temperature of the water. If it is 120˚ F or less, turn
the water off and attach your trim. No calibration is necessary.
If the temperature is higher than 120˚ F, the valve must be calibrated to a lower
temperature. To lower the maximum temperature, proceed to step 2 on page 7.
CARTRIDGE SERVICING
Removal of cartridge:
1. If water supply shut off valves are not accessible or are not present, actuate the
stops by rotating the stop stem clockwise. Do not over tighten stop stem as this
could damage the check valve. (fig.1)
2. While holding the stem to prevent rotation, remove the screw turning
counterclockwise. (fig.2)
3. Remove spring. (fig.3)
4. Using a wrench, remove the handle adapter nut by turning counterclockwise.
(fig.4)
1
2
3
2
1
7
9
Push, Hold, and Turn
Turn
12
12
1Temperature Valve
fig.1
fig.1
fig.2
fig.3 fig.4

page 8page 7
3
2
1
2Temperature Valve
9
12
2
12
fig.2
3Disengage Splines
1
2
fig.3
2
12
C4
fig.4
CARTRIDGE CALIBRATION
cont.
CARTRIDGE CALIBRATION
cont.
Rotate the temperature stem from the hottest
position (9:00) clockwise to the safety stop
position position (12:00). This is 1/4 of a turn
and the stem will pop out when the proper
position is reached.
Continue rotating the stem clockwise from the
(12:00) position to the (2:00) position. (fig.2)
Rotate the stem from the (2:00) position
counterclockwise to the (12:00) position.(fig.4)
While holding the stem to prevent rotation,
remove the screw turning counterclockwise.
Pull the stem from the valve without rotating.
(fig.3)
5
2
1
fig.5
Replace the stem in the new position and
secure with screw. (fig.5)
Test the temperature of the water. If it is still over 120˚ F, repeat
steps 3 and 4 to lower the maximum temperature.

page 8page 7
3
2
1
2Temperature Valve
9
12
2
12
fig.2
3Disengage Splines
1
2
fig.3
2
12
C4
fig.4
CARTRIDGE CALIBRATION
cont.
CARTRIDGE CALIBRATION
cont.
Rotate the temperature stem from the hottest
position (9:00) clockwise to the safety stop
position position (12:00). This is 1/4 of a turn
and the stem will pop out when the proper
position is reached.
Continue rotating the stem clockwise from the
(12:00) position to the (2:00) position. (fig.2)
Rotate the stem from the (2:00) position
counterclockwise to the (12:00) position.(fig.4)
While holding the stem to prevent rotation,
remove the screw turning counterclockwise.
Pull the stem from the valve without rotating.
(fig.3)
5
2
1
fig.5
Replace the stem in the new position and
secure with screw. (fig.5)
Test the temperature of the water. If it is still over 120˚ F, repeat
steps 3 and 4 to lower the maximum temperature.