Test Procedures - ABS XFP 80C-CB1 PE22/4-C-50 Workshop Manual

16 Workshop Manual
ABS submersible sewage pump XFP 80C - 150E
11

Test Procedures

High voltage test
A high voltage test is recommended, if the pump has been repaired or reassembled, to detect any
breakdown of insulation.
Link all power leads together and apply a high voltage between earth and power leads as follows:
Motor
70/2, 22/4, 29/4, 40/4, 60/4, 35/4, 45/4,
75/4, 13/6, 20/6, 30/6, 35/6, 18/4W, 28/4W
110/2, 125/2, 90/4, 105/4
Earth check
An earth check is recommended if the pump has been repaired or reassembled. This involves checking the
continuity between earth lead and the motorhousing ( where earth lead is connected). This can be done with a
resistance meter.
Pressure test
This is performed to check sealing of the unit and is recommended if the pump has been repaired, and before
reassembly of hydraulic parts . All pressure testing must be carried out without oil in the pump. Firstly drain the
oil.
NOTE: In order to prevent dislodging of the seals it is absolutely essential that the stated
testing pressure limits are not exceeded.
Oil chamber connection:
Remove pressure test screw (74) and seal ring (75) from motor housing. Screw pressure test tool (Sec 12.9.5),
into test hole and apply pressure of ½ bar (7 psi). This process will check the sealing of the outer mechanical
seal, and also the sealing between the oil chamber and motor chamber.
Motor chamber connection:
Remove pressure test screw (76) and seal ring (77) from bearing housing. Screw pressure test tool (Sec 12.9.5)
into test hole and apply pressure of ½ bar (7 psi). This process will check the sealing of the motor chamber at
cable entry, and also the sealing between the oil chamber and motor chamber.
Procedures:
The pressure test can be performed using any of the following procedures.
1. Connection to electrical pressure test equipment.
2. Lower into water. Leave motor submerged for a few minutes to allow trapped air to excape and observe
any leaks which are indicated by a flow of bubbles.
Raise pump from water and disconnect pressure from motorhousing first and then oil chamber.
3. The sealing between oil chamber and motorhousing (mechanical seal & DI probe) can be checked by
applying pressure to the oil chamber as above and connecting a U-tube to the motor housing through the
test hole to detect pressure difference in motorhousing. The U-tube should contain a small quantity of water
in the bend, if it displaces then there is a leak from the oil chamber.
Run test
A dry run test should be run to check the amps, voltage, and power drawn against rated data (see ABSEL or
Technical Data Sheet for rated data).
Voltage Trip Level
(V) (mA)
1500 5
1500 10
Duration
(sec)
1
1