GM004GB
PART IV - ROUTINE MAINTENANCE
IV-1. GENERAL
For the sake of simplicity, the procedures described do not mention the washers fitted with fasteners (such as
screws and nuts). Do not forget to reinstall washers after removing them.
Verify that parts are undamaged before reinstalling.
Clean the recess for O-rings when they are removed. Apply tallow in the recess before reinstalling the new O-
ring
BEFORE SERVICING
1. Position the pump capacity adjustment on "0%".
2. Disconnect the pump electrically. Check that
the equipment cannot be started up
accidentally. Place a notice at the location of
the switch.
3. Disconnect the pump hydraulically.
4. Drain the housing and leave it to drip for about
half an hour. Wear protective gloves to avoid
any risk of being burned by hot oil (not
necessary for chapter V and V-1)
RESTARTING
1. Refill the housing (see Chapter
LUBRICATION), with the pump being laid onto
the opposite side of liquid end. Remove any
overflow oil immediately with a degreasing
agent
2. Connect up the pump hydraulically.
3. Check that the capacity is set to « 0% ».
4. Check that there are no suspicious noises
when starting up.
5. Set the pump capacity to « 100 % » to obtain
quicker priming.
6. After priming, set the pump to the desired
capacity and lock the stroke adjustment
knob
IV-2. OPERATION - SCHEDULE FOR CHECKS AND MAINTENANCE OPERATIONS
The programme of checks and maintenance operations depends on the conditions in which the equipment is used. For
this reason, the following frequencies are given as an example only. Individual users should adapt these frequencies to
their own specific operating conditions.
Every 3 months Check by listening (no
knocking)
- if unsatisfactory -> Chapter IV-3
Every 6 months (or 1,500 hours) Cleaning of foot valve and
valve assemblies
Chapter IV-3
Frequency to be defined
according to process (approx.
1,000 hours)
Check on compliance of
flow rate
Chapter IV-3
Every year (or 3,000 hours)
THE FOOT VALVE
Balls and seats kits or sets of
cartridges depending on model),
Chapter IV-3
Every year (or 3,000 hours)
VALVE ASSEMBLIES
Balls and seats kits or sets of
cartridges (depending on
model),
Chapter V
Every 2 years (or 6000 hours) Remplacing the secondary
diaphragm
Chapter V-2
A model maintenance sheet is shown in Figure 3.4a to help you ensure follow-up of your servicing actions (checking or
maintenance).