II-129-025
Page 3
What to look for if:
The maximum temperature cannot be obtained...
a. Lime deposits may have accumulated in the hot water
pipes, restricting the hot water supply.
b. The hot water supply temperature may be too low.
c. The knob rotation setting may be too low. Remove
knobs and stainless box assembly, then readjust the
high temperature limit stop.
Flow of water is less than desired…
a. The upstream supply valves may not be fully open.
b. The inlet supply pressure(s) may be low.
c. Lime deposits may have accumulated in cartridge,
restricting water flow. Replace cartridge kit.
d. The fixture head may be clogged. Remove and clean.
e. The checkstops may be clogged. Clean checkstops.
The valve opens with hot water flow rather than cold
water flow...
a. The inlet water supplies are connected to the wrong
ports or cartridge is installed improperly. The tem-
pered water is too cold, although cartridge has
been replaced, 0R the hot water temperature is
below 115°F...
a. Raise the temperature of the hot water supply.
Flow of water is completely shut off...
a. The upstream supply valves may be completely closed.
b. The hot or cold water supply pressure may have failed.
The e427/e428 valve is designed to close down upon
cold water failure.
c. The checkstops may be closed. Access the check-
stops and open by turning the adjustment screw fully
counterclockwise.
TEMPERATURE SETTING FOR SERIES 440 HIGH CAPACITY VALVES
The standard e427/e428 HydroGuard is factory set to deliver
tempered water up to a maximum temperature of 110°F (43°C)
with equal supply pressures, hot water temperature 140°F
(60°C), cold water temperature 60°F (16°C). If desired, the max-
imum temperature setting can be raised or lowered as follows:
1. Maximum temperature setting adjustment must be set on
the job to in no case greater than 110°F (43°C). The high
temperature limit stop is located on the bonnet. Rotate han-
dle to the maximum desired outlet temperature. With an
open-end wrench, screw high temperature limit stop into
bonnet until it touches stem’s shoulder. Close valve and
open it to full hot to verify settings.
SERIES 440
FOTOPANEL
High Capacity
440-3000
For parts not covered above, refer to Technical Instruction Form MV440-2.
REPLACEMENT PARTS KIT
PART DESCRIPTION REPAIR KIT
MOTOR KITS 427-250 STANDARD
427-251 LOW
427-252 HIGH
BONNET ASSEMBLY KIT 427-019
CARTRIDGE ASSEMBLY KIT 427-017
TROUBLESHOOTING AND REPAIR FOR SERIES 440 HIGH CAPACITY VALVES
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