Repairing The Pumps - MAXIMATOR SLGP 3 Series Installation And Operating Manual

Maintenance
4.
5.
6.
7.
8.
9.
a. The simplest way to measure leakage is by means of water displacement in a measuring cup.
7.2.7

Repairing the pumps

The following section explains how to repair the pump:
Qualifications
Type of mainte-
nance
Interval
Prerequisites
Tools
PPE
1.
35
Description
Measure leak in the high pressure seal and piston seal of the drive piston via
port "Z".
Vent p
L
p does not drop by more than 10% (holding time 30 s).
B
Set p to approx. 50% of the value from the first step and slowly vent P
L
The pump starts up on its own.
– Vent p
L
–
Vent p
B
– Measure leakage from the check valves
– Vent p
L
–
Vent p
B
– Disassemble spool valve
–
Inspect spool valve
– Are the seals worn out?
–
Is there still enough lubricant?
The inspection has been successful if:
– all leak tests have been carried out successfully.
–
the spool valve is OK.
If the pump does not pass the inspection, it must be repaired or replaced.
Description
Repair and service the pump
Repair
as needed
Clean, even work area with ample lighting
–
Cleaning rags
– Cleaning product
–
Torch
– Lubricant as per drawing
– Safety goggles
–
Protective gloves
Disassemble the pump.
.
B
0000000383 - 001 - EN