Pulsafeeder Pulsar Shadow - Manual (Page 23)

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7.1.2 Hydraulic Oil Change:
The recommended hydraulic oil change interval is 2 years for normal service and 1 year for severe
service.
Hydraulic Oil change procedure is as follows:
1. Disconnect the power source to the drive motor.
2. Relieve all pressure from the piping system.
3. Remove the diagnostic window from the top of the eccentric box.
4. Drain the oil by removing the drain plug on the bottom of the eccentric box.
5. Remove and clean the HPV check valve screen (refer to Check Valve Screen – Removal and
Cleaning, Section 7.4.2).
6. Replace the drain plug.
7. Fill the eccentric box with PULSAlube 7H (purple) hydraulic oil (refer to Hydraulic Oil Fill,
Section 5.1.3). Proper fill of a fully drained pump requires 1 liter (approx. 1 quart) of
PULSAlube 7H oil.
8. Replace the diagnostic window.
7.2 Wet End Removal, Inspection, and Reinstallation
PULSAlarm Leak Detection System
See Appendix I, page 32 for information on maintenance of the PULSAlarm Leak Detection diaphragm
If the diaphragm has failed, process material may have contaminated
the pump hydraulic oil. Handle with appropriate care, clean and
replace oil if required.