Milton Roy GM Series User Manual

14
SECTION 4 MAINTENANCE
4.1 PREVENTATIVE MAINTENANCE
Drive
Initially, change the oil in the pump drive assembly after the rst 1000 hours of operation. Thereafter, change
drive oil on an annual basis or after every 5000 hours of operation.
Drive oil: MOBILGEAR 600 XP 220 or Great Wall L-CKD220 (Surround Temp > -5
℃
), Qty: 650ml
Viscosity @ 40
℃
= 209 cSt
Viscosity Index = 95
ISO Grade =220
Diaphragm Assembly
The Series G Model M diaphragm should be replaced annually or every 5000 hours of operation to avoid the
possibility of failure. Refer to the instructions in Section 4.6 Diaphragm and Oil Seal Bellows Replacement.
Oil Seal Bellows
The Series G Model M oil seal bellows should also be replaced annually. Oil seal bellows replacement
requires the removal of the diaphragm assembly, so it is recommended that the oil seal and diaphragm
assembly be replaced at the same time. Refer to the instructions in Section 4.6 Diaphragm and Oil Seal
Bellows Replacement.
Check Valves
As in the case of the diaphragm, Milton Roy Company recommends that check valve balls, seats, gaskets,
and O-rings be replaced on an annual basis or every 5000 hours of operation. If highly corrosive material
(acids, slurries, etc.) is being pumped, more frequent replacement may be required. Complete instructions for
replacement of worn check valves are given in Section 4.5 Corrective Maintenance.
4.2 RETURNING PUMPS TO THE FACTORY FOR REPAIR
Pumps can not be accepted for repair without a Return Material Authorization. Pumps should be clearly
labeled to indicate the liquid being pumped. Process liquid should be ushed from the pump liquid end and oil
should be drained from the pump housing before the pump is shipped.
Note:
A completed Material Safety Data Sheet (MSDS) must be packed in the shipping crate with any
pump shipped for repair. These safety precautions will aid the troubleshooting and repair procedure
and preclude serious injury to repair personnel from hazardous residue in pump liquid end. A Materials
Safety Data Sheet must accompany all re-turns.
All inquiries or parts orders should be addressed to your local representative or distributor.
4.3 ROUTINE MAINTENANCE
Milton Roy Series G pumps are carefully designed, manufactured, assembled, and quality tested to give
reliable service with minimal maintenance. However, a weekly maintenance check is recommended to conrm
proper operation of the pump.

Milton Roy GM Series Specifications

General

Brand	Milton Roy
Model	GM Series
Category	Water Pump
Language	English