Powers e420 Series Combination T/P Tempering Valves - Manual (Page 4)

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IS-P-e420 1045 EDP# 6511214 © 2010 Powers
A Watts Water Technologies Company
Troubleshooting
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Parts List - E420 Model 1
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Warranty
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The Seller warrants that the equipment manufactured by it and covered by this order or contract is free from defects in material and workmanship and, without
charge, equipment found to be defective in material or workmanship will be repaired, or at Seller’s option replaced F.O.B. original point of shipment, if written
notice of failure is received by Seller within one (1) year after date of shipment (unless specifically noted elsewhere), provided said equipment has been properly
installed, operated in accordance with the Seller’s instructions, and provided such defects are not due to abuse or decomposition by chemical or galvanic action.
ThiS expreSS warranTy iS in lieu OF and excludeS all OTher warranTieS, guaranTeeS, Or repreSenTaTiOnS, expreSS OF implied. There are
nO implied warranTieS OF merchanTaBiliTy Or OF FiTneSS FOr a parTicular purpOSe. The Seller assumes no responsibility for repairs made on the
Seller’s equipment unless done by the Seller’s authorized personnel, or by written authority from the Seller. The Seller makes no guarantee with respect to material
not manufactured by it.
What to look for if:
The maximum temperature cannot be obtained...
a. Lime deposits may have accumulated in the hot water pipes, restrict-
ing the hot water supply.
b. The hot water supply temperature may be too low.
c. The temperature limit stop setting may be too low. Remove valve
handle, and readjust the 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.
d. The showerhead may be clogged. Remove and clean.
e. The checkstops may be clogged. Clean check stops.
The valve opens with hot water flow rather than cold water flow...
a. The inlet water supplies are connected to the wrong ports. Remove
the valve and reinstall.
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
HydroGuard ® 420 valve is designed to reduce the flow of water upon
either supply failure.
c. The checkstops may be closed. Access the checkstops and open by
turning the adjustment screw fully counterclockwise.
ATTENTION INSTALLER: After installation, please leave this
Instruction Sheet for occupant’s information.
IMPORTANT: Inquire with governing authorities for local
installation requirements.
Index Part # Description
1 N/A Body Machined
2 200 046 1/2" Plug, Threaded
3 900 050 Kit, Check Stop
4 420 452 Kit, Cartridge
5 420 453 Wax Element Kit
6 420 457 Kit, Bonnet
7 420 046 Kit, Trim Plate, Color Coded
8 420 047 Kit, Trim Plate, Etched
9 420 049 Handle Kit, Dome
10 473 024 1/2" Plug, Sweat