Nu-Way MDFL 3300, Руководство по установке и обслуживанию

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MDFL 3300 & MDFL 4000 Issue 2 08/08 Page 8
Notes:
1. Duplex pumps are recommended for continuity and serviceability.
2. Pre-heating Class D fuel is not normally required, but a minimum temperature of 5°C should be
maintained and all exposed pipework must be lagged.
3. If a shut-off valve is fitted in the supply line to the burner oil pump inlet then a pressure relief
valve MUST also be fitted to prevent damage should the shut-off valve be inadvertently left
closed during the burner start-up cycle. The relief valve must be set at 0.70 kg/cm
2
(10 psi)
above the normal supply pressure.
A TYPICAL PUMPED OIL RING MAIN