Watson-Marlow 505Du - Manual (Page 23)

23
Care and maintenance
The only scheduled maintenance required for the 505Du/RL is inspection of the
motor brushes and their replacement before their length is less than 6mm (1/4").
The life of the brushes will depend on the duty of the pump, but is expected to be
at least 10,000 hours at maximum speed.
When the pump needs cleaning, remove the pumphead and use a mild solution
of detergent in water. Do not use strong solvents.
If the gearbox is rebuilt you must use the 15ml of the recommended lubricant,
which is Rocol MP, which is a SAE 30 mineral oil loaded with molybdenum
disulphide to form a soft fluid grease.
Spares
Transformer
Voltage selector switch
TF 0031
Tachometer disc assy
MN0787M
Display
MNA 0446A
ON/OFF Switch
SW 0147
SW 0086
Tachometer PCB
MNA0500A
Motor brush
BM 0014
9 pin socket
SL 0064
25 pin socket
SL 0058
Motor/gearbox
220 rpm MNA0388A
55 rpm MNA0396A
Panel
MN 0564B
Complete drive
220rpm 056.4841.000
55rpm 056.4821.000
Mains connector
US 0045
Mains fuse
FS 0003
(1.0A T)
ROM
MNA 0475A
Speed control PCB
(Excluding ROM)
PCB fuse
FS 0047
(2.0A T)
MNA 0507A
Audible alarm
MNA 0322A
Joint gasket
Vertical MN 0763S
Straight MN 0764S