Instruction manual

3.6 Connect the cooling-water supply
CAUTION
If your pump is installed in an area where the ambient temperature falls close to or below
freezing point, ensure that the cooling-water cannot freeze inside the pump cooling-jacket
or TCV. If the cooling-water freezes, the pump or TCV can be damaged.
3.6.1 Supply quality requirements
Your cooling-water must meet the requirements of Section 2.3. If it does not, you may get a
build-up of deposits inside the pump cooling-jacket. If you have any doubt about the quality of
your supply, contact your local water authority who can tell you its RSI and advise on treatments
which you can carry out to make your supply suitable for use with the DP180.
If you use a treated closed-circuit cooling system, we recommend that you fill it (and refill it) with
de-ionised or reverse-osmosis treated water.
3.6.2 Connect the supply to the DP180
CAUTION
Make sure you connect the cooling-water supply and return hoses to the correct
connectors on the DP180. If the hoses are incorrectly fitted, the DP180 may overheat and
may be damaged.
The cooling-water connections on the DP180 are suitable for use with hoses with an outside
diameter of 12 mm (
1
/
2
inch). If you need to connect more than one DP180 to the cooling-water
supply, you must connect the pumps in parallel and not in series.
1. Connect the cooling-water supply hose to the cooling-water inlet (Figure 10, item 6).
2. Connect the return hose to the pump cooling-water outlet (Figure 10, item 2).
14 DP180 Dry Vacuum Pump