8
DRISTEEM DRANE-KOOLER WATER TEMPERING DEVICE INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
MAINTENANCE
Maintenance and troubleshooting
STEP-BY-STEP MAINTENANCE INSTRUCTIONS
1 . Shut off cold water supply .
2 . Disconnect service unions at:
• Cold water supply inlet
• Hot water inlet
• Tempered water drain outlet
3 . Remove the Drane-kooler from piping and take to a service sink . Add
water and, with pipe caps or hands covering the hot water inlet and
tempered water outlet, shake the Drane-kooler to dislodge mineral
deposits . Dump mineral deposits and rinse .
4 . If severe mineral accumulation has occurred, remove the thermal sensor
from the Drane-kooler chamber and gently clean the sensor with an
abrasive pad . Do not twist the capillary tube during removal or cleaning .
5 . Reconnect service unions and open cold water supply valve to resume
operation .
Table 8-1:
Troubleshooting
Problem
Possible cause
Action
Water leaving the Drane-kooler is hotter than 140°F (60°C)
Mineral accumulation in mixing chamber
Remove the Drane-kooler and dislodge mineral
accumulation .
Mineral accumulation on thermal sensor
Remove thermal sensor from Drane-kooler and
gently remove mineral accumulation with an
abrasive pad . Do not twist capillary tubing
during removal or cleaning .
Valve malfunction
Valve is not working properly . Replace .
Note: This valve is factory-set and should not
need adjustment .
Steam is entering the
Drane-kooler
The Drane-kooler is designed to handle hot
water and hot condensate . If a large amount
of steam enters the Drane-kooler it is likely that
discharge water temperatures will be greater
than 140 °F (60 °C) . Check P-traps on humidifier
or other appliance to ensure that the P-traps
have the proper depth and are working properly
to prevent steam from entering the
Drane-kooler .
Makes a loud popping or crackling noise
Steam is entering the
Drane-kooler
If steam is entering the Drane-kooler, the
introduction of cold water through the valve
will cause the steam to collapse and make a
popping or crackling sound . Check P-traps on
humidifier or other appliance to ensure that the
P-traps have the proper depth and are working
properly .
