OPG1™ Operation and Maintenance Manual
Page 27
©2000
DH Instruments, Inc
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4.
M
AINTENANCE
A
DJUSTMENTS
A
ND
C
ALIBRATION
4.1
OVERVIEW
OPG1 was designed for maintenance free operation. The hydropneumatic pump and PDVV are
permanently lubricated. No maintenance is required other than:
•
Maintain oil level in tank:
Replace lost oil to never allow the tank to empty which would cause
the pump to run without oil (see Section 4.2).
•
Replace oil and purge hydraulic system when oil becomes dirty:
Over time, contamination
from the system to which OPG1 is connected may cause the oil to become contaminated.
It should then be replaced and the OPG1 hydraulic system purged (see Section 4.3).
•
Prime hydropneumatic pump if it becomes cavitated:
If the hydropneumatic pump is run
without oil in the tank, it may fill with air and become cavitated. If this occurs, the pump will no
longer draw oil and generate pressure. To correct the situation, the pump must be primed (see
Section 4.4).
•
Clean/replace filter elements on PDVV and hydropneumatic pump drive air filters:
The filters may become contaminated and restrict the free flow of drive air pressure. They should
then be cleaned or replaced (see Section 4.5).
Maintenance and repair services for OPG1 are offered by authorized DHI Authorized Service
Providers (see Section 6.1, Table 4).