Install Instructions

2
ADJUSTMENT AND SERVICE
Leonard Type TM Thermostatic Water Mixing Valves are simple in
design and may be easily cleaned, adjusted and repaired. If the
installation is accessible, servicing may be completed without
disconnecting the valve.
NOTE: Thermostatic Water Mixing Valves are REGULATING
mechanisms, which must be regularly maintained to provide best
performance. Frequency of cleaning depends on quality of local water
conditions and usage. (See Maintenance Guide and Record MGR-
1000 and ANSI 358.1).
TO RESET ADJUSTABLE HIGH TEMPERATURE
LIMIT STOP:
WARNING
WARNING! This Thermostatic Mixing Valve has an adjustable
high temperature limit stop which must be checked. If temperature is
too high, the installer MUST RESET stop immediately. Always
check the temperature of the mixed water when the lever handle is
turned to full HOT. If the Emergency Drench equipment is a
combination type, the water temperature must be checked at each
outlet (FACE/EYEWASH /SHOWER) location independently,
Excessively hot water is DANGEROUS AND MAY CAUSE
SCALDING!
Consult medical advisor for correct temperature
setting.
The high temperature limit stop is factory set at approximately 90°F
(32.2°C) with an incoming hot water supply temperature of 150°F
(65°C). If the incoming hot water on the job is higher than 150°F, the
valve when turned to full hot will deliver water in excess of 90°F and
the high temperature limit stop MUST BE RESET BY THE
INSTALLER.
TROUBLESHOOTING INSTRUCTIONS
SEE PAGE 5 FOR COMPLETE PARTS BREAKDOWN, AND PARTS KITS
If installed on a circulated hot water system, make certain the valve is piped according to Leonard Required Methods of Piping (see page 3).
REMEMBER! THIS IS A CONTROL DEVICE WHICH MUST BE CLEANED AND MAINTAINED ON A REGULAR BASIS. (SEE MAINTENANCE
GUIDE AND RECORD, MGR-1000).
POINTER
SET SCREW
LTR
STOP
SCREW
SNAP
CAP
THERMOSTATIC
LEONARD
C
H
1. Loosen LTR set screw.
2. Remove SNAP CAP, SCREW & WASHER. Remove
POINTER.
3. Temporarily place POINTER on the spline rod, turn
HANDLE to the left, allow cold water to flow. Slowly
adjust handle to the right to required maximum
temperature. (Temperatures above 90ºF are not
recommended on Emergency equipment, consult
medical advisor for correct temperature settings).
4. Replace POINTER on the spline rod so that its RIGHT
edge is resting against the STOP SCREW located on
the RIGHT SIDE OF THE COVER.
5. The new maximum temperature has now been set. Test
this temperature by holding a thermometer under the
flow of water to be certain it is as desired.
PACKINGS &
GASKETS
Leak at pointer rod.
Leak between valve cover and base
TM-600, 650, 800, 850
REPAIR KIT 1/50M
TM-5100, 5125
REPAIR KIT 1/125M
PORT SLEEVE
ASSEMBLY
Valve delivers either all hot or all cold water, or
will not mix consistently.
REPAIR KIT TGM-1/50M or
REPAIR KIT R/50M
REPAIR KIT TGM-1/125M or
REPAIR KIT R/125M
THERMOSTAT
GROUP
After cleaning or replacing port sleeve
assembly, valve will not hold temperature.
REPAIR KIT TGM-2/50 or
REPAIR KIT R/50M
REPAIR KIT TGM-2/125 or
REPAIR KIT R/125M
CHECKSTOPS Hot water bypass into cold line.
Supplies cannot be shut off completely.
Leak at checkstop bonnet.
REPAIR KIT 2/50M REPAIR KIT 2/50M