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The individual steps for repairing driven machines such as pumps are: removal and installation of pumps for inspection, repair or replacement; aligning the drive and commissioning and checking the pump, e.g. for leaks.
In conjunction with the HL 962.30 tank system, the HL 962.32 connecting pipes and one of the four HL 962.01 – HL 962.04 pumps, the HL 962 assembly stand forms a complete training system for complex piping and plant systems. The training system forms a closed water circuit.
The assembly stand HL 962 includes a three-phase asynchronous motor with frequency converter as the drive and pipes with valves to adjust the pressure. A pump from the accessory equipment is attached to the base plate of the assembly stand and connected to the drive and the pipes. The pumps that are available as accessories are typical centrifugal pumps used in process engineering.
The position of the asynchronous motor can be adjusted in three directions for alignment purposes. The alignment can either be checked in a conventional manner with a straight edge or with the reverse alignment method using two dial gauges. Non-contact, microprocessor-aided methods can also optionally be used (specific alignment systems are not included in the scope of delivery).
Manometers indicate the pressures upstream and downstream of the pump. The flow rate is measured with a rotameter. Speed and power output of the motor are indicated on digital displays.
The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.
Learning Objectives / Experiments
in conjunction with an accessory pump (standard chemicals pump HL 962.01, canned motor pump HL 962.02, side channel pump HL 962.03, standard chemicals pump with magnetic clutch HL 962.04) and a suitable water supply, e.g. HL 962.30 with HL 962.32 - mounting of the pump and alignment of the electric
- familiarisation with various methods of aligning the
motor and pump
- commissioning and leak testing
- recording a pump characteristic
- comparison of various pump types (only if multiple pumps are available)
 stand for mounting of various pumps
 asynchronous motor with variable speed via frequency converter
 electric motor with positioning frame and fit plates for alignment
 base plate prepared for mounting of various pumps
 alignment of motor and pump with straight-edge or by dial gauges
 switch box with speed adjuster and digital display of speed and power output
 frame with adjustable feet for levelling
 PVC piping
 water supply from tank system HL 962.30
 the system forms part of the GUNT assembly, maintenance and repair practice line
Three-phase AC asynchronous motor
- power output: 4kW, speed range: 0...1450min-1
Connecting flanges for water supply
- intake side: DN50
- delivery side: DN50
- intake side channel pump: DN32
Fit plates as motor chocks
- 4 different thicknesses: 0,1-0,2-0,5-1,0mm, 20 of each
- pressure (inlet): -1...1bar
- pressure (outlet): 0...16bar
- rotameter: 0...11m³/h
- speed: 0...3000min-1
- power meter: 0...4kW
- dial gauge: 0...3mm, resolution: 0,01mm
Dimensions and Weight
Weight: approx. 220kg Required for Operation 400V, 50/60Hz, 3 phases or 230V, 60Hz, 1 phase
Scope of Delivery
1 assembly stand
1 set of tools
1 set of measuring aids: 2 dial gauges with attachment, 1 straight-edge
80 fit plates, differing thicknesses
1 set of instructional material