Glycol Chillers : BC Series with MG Control Instrument
Page: 28
ADVANTAGE ENGINEERING, INC.
525 East Stop 18 Road Greenwood, Indiana 46142
317-887-0729 Fax: 317-881-1277
Service Department Fax: 317-885-8683
Email: [email protected]
4.
HIGH FLOW
If a high flow condition is present:
a.
High flow can cause premature component wear and poor operating
conditions.
b.
Adjust the flow so that an 8°F - 10°F rise in water temperature is
indicated while the system is fully loaded.
5.
If an excessive flow 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 flow rate to
match the system pressure loss (reduce flow rate) to prevent continual tripping of
the overload relay. This procedure is outlined here:
a.
Open electrical cabinet panel door. Note that the electrical power
is engaged at this point and caution must be observed while the
cabinet panel is open.
Power leads coming from Overload Relay
Normal Operating Position
Tripped Position
WARNING: The electrical power is engaged at this point. Caution must be observed while
the electrical supply is engaged and cabinet panels are removed and opened.
