Ratek TH8500 Programmable Immersion Heater Circulator - User Manual
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Page 13 of 28
Pump adjusted to minimum flow rate
Pump adjusted to maximum flow rate
Attaching a Hose For External Pump-Out
The Immersion Heater Circulator pump features two outlets that can be fitted with a suitable hose to allow water to
be pumped out of the bath, either for external re-circulation purposes or to assist in emptying large water baths. For
most applications, only one hose should be fitted, allowing the other outlet to circulate water in the bath to maintain
temperature uniformity within the tank. If both outlets are used, temperature uniformity in the bath will be reduced
and should be considered as part of your application.
Before attaching a hose, ensure the equipment is disconnected from the mains power supply and the element is cold.
The diameter of the pump outlet fitting is 9.5mm. Use a suitable hose with an internal diameter of approximately 9 to
9.5mm to maintain a snug fit on the outlet, with an outer diameter no larger than 15mm. Silicon hose is
recommended for most applications. Simply push the hose over either outlet until it touches the guard, a hose clamp
may be used if required however this is not normally necessary if using the correct size hose.
Hose attached for external pump-out
Connecting
Power
CAUTION
The equipment must only be used with a protective earth power socket. The earth contact provides protection to
the user and the equipment. If you do not have a protective earth power socket, or you are unsure as to whether
you have a protective earth power socket,
do not
connect the equipment. In such cases you should consult your
workplace administrator or electrical maintenance staff to determine if a protective earth power socket is available.
The mains power supply must be rated to match the power requirement as identified on the product identification
label on the rear panel. This is normally expressed in the format of Voltage Range and Frequency.
A surge protected
power outlet is strongly recommended as it provides some protection for the equipment in areas of poor
electrical quality as well as providing some protection against lightning strikes. The equipment should be
