Conair Thermolator TW-P, Руководство пользователя

Страница: 45 / 136

Operation I
4-9
4
Opera
tion
Start-up
CAUTION:
Do not shut off To Process, From Process, Cooling Water In, or
Cooling Water out valves while this equipment is operating. Equipment failure
and/or serious injury could result.
CAUTION:
Always keep the cover in place while operating this equipment.
Internal surfaces may be extremely hot. Only qualified personnel should remove
this cover.
CAUTION:
Ground the unit properly in compliance with local and national
codes.
Step 1 – Connecting Main Power
Connect main power properly ensuring it matches the voltage shown on the nameplate
of the unit. Check the electrical phase sequence prior to start-up. The proper sequence is
“ABC”. If the phasing is incorrect, open the main power disconnect and switch two line
leads on the main power terminal blocks (or the unit mounted disconnect). All electrical
components are in-phase at the factory. Do not interchange any load leads that are from
the unit contactors or the motor terminals. After confirming proper power connection and
grounding exist, turn the main power on.
Step 2 – Fill Coolant Circuit
Check to make sure all piping connections are secure. All fluid lines and connectors
should be rated for 150 psi {10.3 bar}at the maximum operating temperature except for
7½ hp and 10 hp units with the 300°F {149°C} option that require lines and connectors
rated for at least 175 psi {12.1 bar}. We recommend the cooling source supply and return
lines are of metal composition (black steel, galvanized or copper).
Make sure that the cooling source is the appropriate temperature and pressure for your
application. In most cases, the cooling source is between 40°F and 85°F {4°C and 29°C}.
The cooling source fluid pressure must be above the set point of the pressure switch in
order for the unit to start. For most applications, the design cooling source supply pressure
is between 25 psi and 50 psi {1.7 and 3.4 bar} Units with the 300°F {148.89°C} operating
range option require an inlet cooling source pressure of 75 psi {5.2 bar}. If the total pres-
sure in the unit (cooling source inlet pressure plus the pump pressure) exceeds
150 psi {10.3} the pressure relief valve in the unit will open. If this becomes an issue,
install a pressure-regulating valve (Part #9616548 available from our Parts Department)
on the supply line to help regulate the pressure to ensure it does not exceed the pressure
rating of the pressure relief valve. For further assistance in installing a pressure-regulating
valve, please contact our Service Department (800-458-1960 or 1-814-437-6861 from
outside of the United States).
Contact Conair
Parts and Service
Phone: 800-458-1960
From outside of the
United States,
Call: 814 437 6861
(Continued)
(Continued)