© Edwards Limited 2011. All rights reserved. Page 45
Edwards and the Edwards logo are trademarks of Edwards Limited.
Maintenance
A705-40-880 Issue B
5.10 Check the coolant level and refill if necessary
5.10.1 Refill the pump with Edwards coolant
Note: To refill the pump with Edwards coolant, you will require new coolant, available as a spare: refer to
Section 7.3.
1. Refer to Figure 3. Wear thermal protective gloves and push down the coolant filler-cap (1) and turn it
anticlockwise by a 1/4 of a turn to release the pressure in the cooling-jacket: see detail A.
2. Remove any dirt or water-scale from the seal of the filler-cap (1) and from the filler-tube (4).
3. Look at the level of coolant (6) in the cooling-jacket. If the coolant level is more than approximately 25 mm
below the bottom of the filler-neck (5, see detail B), continue at Step 4, otherwise continue at Step 5.
4. Fill the pump with new Edwards coolant: use the procedure in Step 4 to 9 of Section 3.4.
5. Refit the coolant filler-cap (1); press it down and turn it clockwise to secure it to the pump.
5.10.2 Fill the pump with a different coolant
Note: You will require a Routine Maintenance Kit (see Section 7.3) to drain and refill the pump with a different
coolant.
If you will refill the pump with a different coolant, refer to Figure 3 and use the following procedure. The coolant
you use must comply with the requirements of Section 2.4.
1. Refer to Figure 3. Wear thermal protective gloves and push down the coolant filler-cap (1) and turn it
anticlockwise by a 1/4 of a turn to release the pressure in the cooling-jacket: see detail A.
2. Turn the coolant filler-cap (1) anticlockwise and remove it from the pump.
3. Remove any dirt or water-scale from the seal of the filler-cap (1) and from the filler-tube (4).
4. If required, place a suitable container under the coolant drain-plug (2), then remove the drain-plug and 1/2 BSP
rubber bonded seal from the pump and allow the coolant to drain from the cooling jacket.
5. Flush the cooling-jacket with clean water (through the filler tube) to remove any sludge or debris from the
cooling-jacket.
6. Fit the new bonded seal and refit the coolant drain-plug (2) to the pump.
7. Mix the coolant with water as recommended by the coolant manufacturer.
8. Fill the pump with new coolant through the filler tube (4): use the procedure in Step 4 to 9 of Section 3.4.
9. Refit the coolant filler-cap (1); press it down and turn it clockwise to secure it to the pump.
Allow the pump to cool down and release the pressure in the cooling jacket before you remove the
coolant filler-cap. If you do not, hot coolant may be ejected from the cooling jacket and may cause
injury.
Ensure that you correctly fill the EDP80 and EDP160 pumps with coolant, as described in the
following sections. If you do not, an air-lock may develop in the cooling-jacket and the pump may
overheat.
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