B756-01-880 Issue K
Page 20
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Installation
In all other operating conditions, forced-air cooling only may be used. If using forced air to cool the pump, ensure
that there is an adequate supply of cooling air to the pump.
During operation, if the temperature of any surface of the pump is higher than 45 °C, the pump is too hot and cooling
must be increased.
3.6.2
Forced-air cooling
An air cooler accessory is available for the EXT Split Flow Pumps (refer to
). Fit the air cooler as described
in the instruction manual supplied with it. If using an alternative fan for air cooling, ensure that the flow rate is above
70 m
3
h
-1
(40 cfm).
3.6.3
Water cooling
A water-cooling block accessory is available for the EXT Split Flow Pumps (refer to
). Fit the water-cooling
block as described in the instruction manual supplied with it. The cooling-water supply must comply with the
specification given in
. Pipes in the water-cooling circuit may become blocked if the cooling water
contains too much calcium carbonate or if it contains particulates which are too large. Corrosion of the water-cooling
circuit may occur if there is too little calcium carbonate and oxygen in the water. Good quality drinking water is
usually suitable for water cooling. If in doubt, check the quality of the cooling-water supply and, if necessary, provide
treatment and filtration.
Connect the cooling-water supply to the water cooler on the pump as described below. Either of the two riffled
connectors on the water cooler can be used for the water supply or return connections.
1. Push reinforced hose (approximately 6 mm internal diameter) over the ends of the riffled hose connectors on
the water cooler on the pump.
2. Attach the hose with strong hose clips and make sure that they are tightened securely.
When the pump is switched off, turn off the cooling-water supply to prevent condensation of vapours inside the
pump. The EXC Controller (EXC120 and EXC300) can operate a solenoid valve for this purpose.
To avoid breaking the cooling-water circuit if the pump is removed for maintenance, unscrew the M4 cap-head fixing-
screws and remove the water cooler from the pump. Make sure that there is a layer of thermal contact grease on the
water cooler before refitting it to the pump.
Содержание EXT200/200H GCMS
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