Table of Contents
Advertisement
Page 80 of 88 pages
Troubleshooting/Eliminating Errors
•
Set the stroke length to 100% with the knob (3), and with the metering
pump running turn the complete liquid end so long to the right until the
suction connection points downwards vertically.
•
Stop the pump.
•
Then tighten the 4 screws (17c) crosswise.
ATTENTION:
It is essential that the torques for the screws are observed!
Torques for screws
M4:
2.5 to 3 Nm!
M5:
4.5 to 5 Nm!
PLEASE NOTE:
The torque of the liquid end screws is to be checked after 24 hours
operation!
For PP pumps the torques are to be checked additionally every
quarter of a year.
•
With the pump running set the stroke length desired.
14.1.6 Exchanging the complete liquid end
PLEASE NOTE:
Complete liquid ends are delivered with the bleed valve open!
After priming and bleeding the fine bleeding screw (17a) and the
bleed valve (17) must be tightened!
Check that the suction and discharge valves fit firmly!
14.2
Errors which require customer service assistance
DANGER:
Electrical repairs may only be carried out by trained
electricians (safety regulations of the employers' insurance
associations: VBG 4 and ZH 1/11)!
DANGER:
Before opening the pump pull out the mains plug or cut off
the power supply!
Check that the pump is voltage-free!
Also isolate relay option if fitted!
During the repair work, it is essential that it is not possible for
the pump to be switched on again!
WARNING:
Metering pumps may only be repaired by trained and
authorised persons!
Version 2.0
Advertisement
Table of Contents
