Pre-Loading & Checking Set, Type-PCM Filters . Accumulators an ISO 9001 Company General Used for charging of welded Diaphragm Accumulators (type : AMW) with gas as well as pressure checking and adjustment. When charging, the nitrogen bottles must be capable of delivering pressure higher than the desired accumulator gas pressure. Construction Standard version comprises Valve body complete with ring nut connection to accumulator gas valve, pressure gauge, bleed and non return snap-in connection. High pressure hose complete with connections. Two pressure gauges (HP & LP) Set of spare gaskets. Carrying case. Adaptor to connect to nitrogen bottle. Important Note : Accumulator connection - M28x1.5 Technical Features Non-return valve connection Max. Working pressure : 400 Bar. for charging hose SW 14 Accumulator Connection : M28 x 1.5 Bleed Bottle Connection : Standard - 5/8” BSP (Internal) Pressure gauges : Ø63. Connection - 1/4” BSP(M) LP - 70 kg/cm2. HP - 280 kg/cm2 Weight : 1.8 kg (carrying case included) Ring nut Hexagon 6 OR 16x3 M28x1.5 Identification Code PCM 280/70 - - - Type Pressure Gauges Connection to Connection to Hose (Mtrs) (full scale bar) Accumulator Bottle PCM 280/70(Standard) -= 2 Mtrs. (Std) (Pre-Loading & Checking) -- = M28x 1.5 = 5/8"BSP(M) On request On request HP - 400-350-210-140 1.5-2.5-4 Mtrs. LP - 35-20-10-7 An ISO 9001 Company Techni Towers C-54/A, A.P.I.E., Balanagar Hyderabad -500 037. A.P.,India. Tel. Nos. : 23778803/23778804/23871445 Fax Nos. : 040-23871447. Internet : www.epe-india.com Note : Technical specifications are subject to change. E-mail : business@epe-india.com Catalogue Ref. : EPE/PCM/001 1 15 2 General It is important to keep gas pressure in the accumulator constant B A C and it should therefore be checked periodically by means of Pre- loading & Checking Unit (PCM). The same equipment is used for re-inflating the bladder after serving or replacement. Connection is made by a special minimess hose to the dry nitrogen D bottle with an adaptor. Pressure Checks This is a simple operation, the correct procedure is as follows: *Isolate the Accumulator from the system and reduce the liquid pressure to Zero. *Remove the protective and sealing caps from the gas valve. *Prior to mounting the PC unit ensure that Valve Knob “A” is unscrewed, Bleed Valve “B” is closed and Non-Return Valve “C” is screwed tight. *Attach PC unit to the gas-fill valve by means of Ring Nut “D”. *Screw Valve Knob “A” to a point where pressure is registered. If the pressure is OK remove the PC Kit as follows: *Unscrew the Valve Knob “A”. *Open the Bleed Valve “B” and unscrew the Ring Nut “D”. Pressure reduction *Fit PC Unit as described above. *Reduce the nitrogen pressure by opening Bleed Valve “B” slowly while the Valve Knob “A” is screwed in until the correct pressure is registered on the gauge. WARNING Increase or reset pre-charge pressure It is recommended that the gas line is If it is necessary to fill, or to increase the gas pressure, proceed as fitted with a safety relief valve when follows: charging accumulators with shell *Fit the PC unit as described above. ratings of less than Nitrogen Cylinder *Fit the bottle adaptor to the nitrogen cylinder. pressure. *Connect the minimess hose between the cylinder and the non- return valve “C”. Note : *Slowly open the valve on the cylinder until the gauge registers a Standard equipment PCM-280/70 is pressure slightly higher than the one desired, then shut. supplied with two pressure gauges : *Unscrew Knob “A” and reduce the pressure on PC Kit to Zero the high pressure gauge (280 bar) is by means of the Bleed Valve “B”. used for charging and for checking *Disconnect the hose from the non-return valve and replace cap. pre-charge pressures higher than 50 *Close the Bleed Valve “B” and wait approximately 5 mins. for bar. the temperature to stabilise. *Screw Valve Knob “A” until the pressure can be read. This The low pressure gauge (70 bar) is should be slightly higher than the desired pressure. used for pre-charge pressures lower *Adjust by means of the Bleed Valve “B” & remove the filling than 50 bar. unit. *Use soapy water test for leaks. ONLY NITROGEN MUST BE *Replace the valve cover and protection caps. USED FOR CHARGING. AIR OR OXYGEN COULD CAUSE AN The Accumulator is now precharged as per the requirement. EXPLOSION.