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CHAPTER 4 – FAULT DIAGNOSIS
INTRODUCTION
This chapter details the failure diagnosis procedures for the Plantmaster Electric to be carried out at user
level.
Before attempting to fault find on the equipment, it is essential to have a sound knowledge of the
equipment and its various components. Construction and operation details are contained in Chapters 2
and 3 of this User Instruction Manual.
To maintain product safety and reliability, repairs must be carried out by an authorised service engineer.
Refer to the following table for standard failure diagnosis.
TABLE 1 - FAULT DIAGNOSIS
Serial (1)
Symptom (2)
Possible cause (3)
Action (4)
1
Machine will not run
No electrical supply
Electrical supply incorrect
Mains power cable is
damaged
Check supply is available
Check plug is fitted correctly
Check supply switch is on
Check suitability of supply
Check cable. If damaged, contact
service engineer
2
Water fails to flow from
lance
Empty water tank
Water filter blocked
Lance nozzle blocked
Check supply
Clean or replace as required
Clean or replace as required
3
Pressure too low
Dirty water filters
Detergent valve open
Lance nozzle missing or
worn
Clean or replace as required
Close valve
Replace
4
Pressure is too high
Lance nozzle is restricted
Clean or replace as required
5
Water drips from under
the body of the machine
Leak from water tank
Faulty float valve
Contact service engineer
6
Machine not sucking
detergent
Detergent filter blocked
Clean or replace as required
7
Pump noisier than usual
Lack of lubrication
Pump loose on motor shaft
Mechanical fault
Repair or replace
Contact service engineer
Contact service engineer
