Conair Thermolater vacuTrac, Руководство пользователя

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C
ONAIR
T
HERMOLATOR
VTR
POSITIVE
/N
EGATIVE OPERATION
1.0 P
ROCESS
W
ATER
C
ONNECTIONS
P
ROCESS
C
ONNECTIONS
Connect the
FROM PROCESS
and
TO PROCESS
connections on the back of the Thermolator using 1-
1/4”
NPT piping. Viewed from the rear, the
FROM PROCESS
connection is located on the left hand side of the
unit, and is clearly marked “
FROM PROCESS
”. The
TO PROCESS
connection is located on the right hand
side of the unit, and is marked “
TO PROCESS
” in close proximity on the back panel.
O
VERFLOW
/V
ENT CONNECTION
Connect the
OVERFLOW
/
VENT
piping on the reservoir tank, located at the top rear of the unit, to an open
drain or vented, covered container. This connection must be piped with a clean break in order to prevent
back flow and pressure in the
PROCESS
piping. This is where a VTR vents air out of the
PROCESS
piping
since the unit is operating at times in a vacuum mode, and can be introducing small amounts of air into
the
PROCESS
piping.
Note: Always use a back-up wrench to support the piping when making connections to the unit.
1.1 C
OOLING
/M
AKE
-
UP WATER CONNECTIONS
C
OOLING
C
ONNECTIONS
Connect the
COOLING WATER IN
/
MAKE
-
UP
and
COOLING WATER OUT
piping to the Thermolator using ¾”
NPT pipe. Viewed from the rear, the
COOLING IN
/
MAKE
-
UP
hookup is in the lower left hand side through
the back panel and is marked “
COOLING WATER IN
”. The
COOLING WATER OUT
hookup is in the lower
right hand side through the back panel and is marked “
COOLING WATER OUT
”.
Note: The cooling water out connection is piped with a swing check that must not be turned on to its
side when the connection is made.
1.2
C
OOLING
/M
AKE
-
UP WATER PRESSURES
C
OOLING
/M
AKE
-
UP SUPPLY
&
RETURN WATER PRESSURES
Cooling /make-up
SUPPLY
and
RETURN
water pressure must have net pressures of between 25 PSI and 75
PSI. A net pressure less than 25 PSI may not provide sufficient cooling for the process. The net pressure
is the difference between the cooling
SUPPLY
and
RETURN
pressures.
1.3
S
EQUENCE OF OPERATION
S
EQUENCE OF OPERATION
VTR1 units control process water temperature. When the controller signals the unit to heat, the electric
immersion heater is energized raising the
PROCESS
water temperature. When the controller signals the
unit to cool, the
COOLING WATER OUT
(1/4”) solenoid valve is energized. This allows the hot
PROCESS
water out of the process piping. When sufficient water has been pumped out of the unit, the
MAKE
-
UP