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operation. This task must only be carried out by
trained personnel. Specialized personnel must
always supervise the work on the system in these
cases.
9. Do not spill lubricants / oil, etc. Be aware of the
environment and the cost of cleaning up.
10. Ensure that all PPE’s and other safety equipment
are used when operating conditions demand it.
11. Be aware of fire alarms. Know the location and
operation of fire extinguishers.
12. Only use appropriate workshop equipment. Prevent
damage to parts using unsuitable equipment.
13. No modifications, additions or conversion work
that could affect the safety of the equipment must
be carried out. This applies also to the fitting and
adjustment of safety devices, covers, valves and
welding supporting parts.
14. Spare parts must conform the specified technical
requirements of the manufacturer.
15. Return the system to proper working conditions
once maintenance work is completed. Inform the
operator accordingly.
9.3 Responsibilities
Maintenance work and inspections must only be
performed by trained and qualified personnel. In most
cases, maintenance can be performed by the operator.
For the following maintenance work, however, the
manufacturer must be contacted:
• Hydraulic equipment pressure settings adjustment.
• Hydraulic pumps adjustment and repair.
• Control valves of all main functions adjustment and
repair.
• Electrical system adjustment and control system
repairs.
• Welding, cutting, grinding or any other structural
adjustment work.
• Main parts replacement.
• Additional maintenance work not written in this
manual.
CAUTION
It is the customer responsibility to maintain the
system regularly for durability and to keep it in good
working conditions.
9.4 General Maintenance Procedure
Before, during and after maintenance, the following
procedures are applicable:
1. Procedures prior to maintenance work.
• Let powerpacks cool down. When working on
the electrical system or welding on the work site,
shut down the powerpack and remove all electric
connectors.
• Mantain the work area and equipment clean. Use
the appropriate cleaning materials for the items to
be cleaned.
2. Procedures during maintenance.
• Perform inspection / maintenance work according
to the table and fill in the maintenance form.
• Use all required PPE’s.
• Use technical competence and tools suitable for
the job.
3. Procedures after maintenance.
• Return system to proper working condition.
• Check all components for leaks.
• Fit safety devices and carry out operational checks
on the system.
9.5 Hoses maintenance
In order to mantain hoses in a good condition, follow the
next steps:
1. Keep below the maximum permitted pressure.
Ensure that peak pressures do not exceed the
maximum allowed pressure.
2. Do not drop heavy objects or stand on pressurized
hoses.
3. Do not pull on connected hoses. If pulling forces
are exerted on a hose, hydraulic couplings could
weaken, which may result in bursting of the hose
out of the coupler.
4. Do not bend hoses too tigthly. Do not exceed the
bending radius permited by the manufacturer.
5. Change worn or damaged hoses inmediately. Do
not use dirty or corroded couplers.
6. Do not expose hoses to temperatures higher than
150˚F [65˚C].
7. Electric Scheme
Table
The electric scheme references of these pump models
are found on the following table.
SHS Model
Electric Scheme Reference
SHP414MW
SHSEC414MW
SHP414MJ
SHSEC414MJ
SHP421MW
SHSEC421MW
SHP421MJ
SHSEC421MJ
