HAWS
®
P/N 0510000457 Rev.3 11/16
Model 8780
Page 13 of 20
MAINTENANCE, TESTING, REPAIR
Blending Valve System
The blending valve system should require minimal amount of
maintenance. During scheduled testing, the temperature output
should be checked for proper adjustment. For a complete test, the
steps below should be followed.
1. Activate the shower to initiate flow.
2. Observe temperature on outlet. Temperature should be 84ºF ± 2
°
F (29ºC ± 1ºC). Let flow for
30 seconds to see if temperature remains stable.
3. Adjust mixing valve to a warmer setting until the temperature increases to roughly 88
°
F. This
step ensures that the hot shut-off valve and by-pass valve are working properly.
4. Adjust valve back to 70
°
F (21ºC) by adjusting the mixing valve in the cooler direction.
5. Slowly return temperature in the warmer direction until a constant 84ºF ± 2
°
F (29ºC ± 1ºC) is
maintained. Turn shower off.
NOTE: For more information, refer to the Blending Valve System O&M manual.
“Y” Strainers
“Y” strainers should be blown out at the same time as scheduled testing of showers or monthly.
For technical support, contact Haws' authorized service provider, Zevado™
| (888) 508-8065 |