Application The HEATPAC Electric Heating Systems are specifically designed for the heating of mineral oils in booster systems and prior to centrifugal cleaning. The HEATPAC Systems are type-approved by ABS, BV, DnV, GL, LR, NK, RINA, RMRS. Concept The HEATPAC EHS System (Fig. 2) comprises: • Heater EHM. • HEATPAC control unit (EHS-61 only). • HEATPAC power unit (EHS-62 only). • Ancillary equipment including PT-100 temperature sensor, high temperature sensor and safety valve. Features The unique features of the HEATPAC System are: • Compact and lightweight design. • Incremental electronic temperature control. • Specially designed heating elements for high-efficiency heat transfer. • Fully automatic operation. Benefits The main benefits include: • Ease of installation. • Instant temperature control. Temperature accuracy to within ±1°C. • Gentle treatment. No deterioration of heated oil. • Start-and-forget operation. • Optimum heating of all types of mineral oils, particularly high-density, high-viscosity fuel oils, sensitive lubricating oils and turbine oils. Fig. 1. EHM Electric Heater with ancillaries. HEATPAC® EHS-61, -62 Electric Heating Systems

System working principle The fuel or lubricating oil is fed continuously to the HEATPAC heater. A signal from the Pt-100 temperature sensor at the oil outlet is transmitted to the HEATPAC control unit (EHS-61) or external controller, such as an EPC-41/400 or EPC 50 (EHS-62) which regulates the amount of electric power to the heating elements. Heat is transferred to the oil through the corrugated aluminium surface. (Fig. 3). Overall incremental operation is automatically controlled by the HEATPAC control unit or the external controller. The HEATPAC control unit and power unit features specially...

Main system components HEATPAC EHM Heater, standard design The heater comprises rectangular diecast aluminium heating elements mounted on a flange to form a compact heating block which is inserted in a pressure vessel made of mild steel. A baffle inside the vessel divides the flow into two passes. The oil inlet and outlet are located opposite each other on the same level, enabling installation in a series. The terminal box housing at the top of the heater is separated from the hot pressure vessel to maintain a low temperature in the box. The hot side of the pressure vessel is adequately insulated...

Contactor box For sizes bigger than 22/24 kW an additional contactor box is required in the system for feeding of base load. The contactor box is only used with the HEATPAC control unit. Technical data Power supply: 230, 400, 440, 480 VAC, 50/60 Hz Contactors: 48 VAC Control module internal voltage: 48 V, 20 V, 10 V Dimensions (mm): H/450, W/550, D/260 Weight (kg): 40 Protection class: IP 65 Max. ambient temperature: 55°C External inputs: 48 VAC potential-free contact Pt-100 three-wire measurement 4–20 mA External outputs: function alarm process alarm external contactor Installation The HEATPAC...