Temptek CF Series - Page 29

CF Series Portable Chiller : Air & Water-Cooled : 5 - 40 Tons
Page: 29
TEMPTEK, INC.
525 East Stop 18 Road Greenwood, Indiana 46142
317-887-6352 Fax: 317-881-1277
Email: service@Temptek.com
gauge reading is in the normal operating range for the refrigerant type
used in the chiller.
For Automatic Low Flow Bypass Valves: A “T” handle or adjusting
stem is located on the top of the valve. Turning the “T” handle or
adjusting stem in the clockwise direction puts more pressure on
thevalve’sspringreducingbypassow.Turningthe“T”handleor
adjusting stem counter clockwise puts less pressure on the spring and
increasesbypassow.Adjustthe“T”handleoradjustingstemuntilthe
low pressure gauge reading is in the normal operating range for the
refrigerant type used in the chiller. If the low pressure gauge reading is
below normal, reduce the pressure on the spring to provide more bypass.
4. HIGH FLOW
 Ifahighowconditionispresent:
a. Highowcancauseprematurecomponentwearandpooroperating
conditions.
b. Adjusttheowsothatan8°F-10°Friseinwatertemperatureis
indicated while the system is fully loaded.
5. Ifanexcessiveowsituationisencounteredandthemotoroverloadcircuithas
tripped, the operator must manually reset the overload relay before operations
can continue. This is done by opening the electrical panel cover and identifying
the motor overload relay.
Some overload relays have a red button that pops out if the overloads are tripper.
Simply push the button in until the overloads are reset.
Other overload relays have a switch. This switch will be positioned with the
indicator pointing up when in normal operation. The indicator will be pointing to
the left when the overloads are tripped. To reset, simply turn the switch to where
the indicator points up.
Ifamotoroverloadsituationpersists,theoperatormustadjusttheowrateto
matchthesystempressureloss(reduceowrate)topreventcontinualtrippingof
the overload relay. This procedure is outlined here:
Automatic Low Flow
Bypass Valve