These operation and maintenance instructions apply to DESMI ESL pumps in compact and magnetic drive design. DESMI reserves the right to make any type of update, without prior notice. The latest version of the manual is acquirable by scanning the QR code in the front page of this manual.
If required, the operator can commission the manufacturer / supplier to train the personnel. Training on the pump (set) must always be supervised by technical specialist personnel. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf.
GENERAL DESCRIPTION 1.3. EU & UK declaration of conformity DESMI PUMPING TECHNOLOGY A/S, hereby declare that our pumps of ESL compact and magnetic driven type are manufactured in conformity with the following essential safety and health requirements in the COUNCIL DIRECTIVE 2006/42/EC on machines, Annex 1.
The precautions to be taken using the pumps in areas where the ATEX rules for “Ex II 2G Ex h IIb T4 Gb X” marked equipment apply. Only pumps mounted with EX-marked nameplate from DESMI are approved for / allowed to be used in EX areas.
1.5. Information relevant for disassembly or disposal at end-of-life No harmful materials are used in DESMI pumps – please refer to DESMI Green Passport (can be sent on request – contact a DESMI sales office) – i.e. common recycling companies can handle the disposal at end-of-life.
Magnetic field In conjunction with one of the signal words, this symbol indicates a hazard involving magnetic field and identifies information about protection against magnetic field. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com www.desmi.com...
In conjunction with the signal word CAUTION, this symbol indicates a hazard for the machine and its functions. 2.1.3. Labels on the product The diagrams below indicate the location of the machine's safety and information labels. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com...
As soon as the work is completed, re-install and/or re-activate any safety relevant and protective devices. Before returning the product to service, observe all instructions on commissioning. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com www.desmi.com...
Prevent impermissible modes of operation at all times. 2.8.1. Marking The marking on the pump refers to the pump part only. DESMI’s standard EX marking for pumps is: Ex II 2G Ex h IIb T4 Gb X.
Check whether monitoring equipment is required to ensure that the pump set functions properly. Contact DESMI for further information on monitoring equipment. 2.8.4. Operating limits – i.e. if there’s a risk of too high liquid temperatures, then a PT100 sensor Refer to the chapter 1.4...
1. On transfer of goods, check each packaging unit for damage. 2. In the event of in-transit damage, assess the exact damage, document it and notify DESMI or the supplying dealer (as applicable) and the insurer about the damage in writing immediately.
3.3. Storage If commissioning is to take place some time after delivery, we recommend that the following measures be taken for pump (set) storage. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com www.desmi.com...
Store the pump (set) in a dry, protected room where the atmospheric humidity is as constant as possible. Rotate the shaft by hand once a month. For storing a pump (set) that was operated, the shutdown measures must be adhered to. See also: DESMI Pump Storage and Preservation at: www.desmi.com/media/vqkjqh54/t1534uk.pdf 3.4. Return to supplier 1.
If the product contains substances that are harmful to the environment, these shall be removed or disposed of in accordance with local/regional regulations. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf.
2. If the ambient temperature exceeds the above value or the motor is located more than 1000 m above sea level, the motor cooling is less effective and could require an adapted motor power. Please contact DESMI.) Media density and viscosity Density: Max.
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This could cause overloading of the pump shaft and the motor. Contact your supplier for advice, if needed.) DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf.
At the same time, none of the forces or moments may exceed the indicated figure multiplied by 1.4. 4.2. Technical data 4.2.1. Maximum work pressure DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com...
The pump vibration at rated work condition is less than 2.8 mm/s which are measured on designated position. The vibration can change when work condition changes, e.g. rotation speed, duty point shift by external force, liquid type, etc. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com www.desmi.com...
All the ESL pumps are provided with a name plate on body to describe pump hydraulic and mechanical specification. (Individual motor name plate on motor body, of which description is given in motor operation manual.) DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf.
The pumps can be delivered in other material combinations according to agreement with the supplier. R may be the following: 18: Compact and magnetic drive Z may be the following: DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99...
If test is performed, ISO9906 Grade 2B is applied as DESMI standard, or other test standard on mutual agreement. IMP is impeller’s real diameter after trimming to obtain rated flow and total head. IMP is a necessary pump specification in spare parts ordering.
Wiring work requires professional knowledge. Only authorized skilled person can do the work. Always obey the valid rules and regulations. For final design and installation of pumps supplied by DESMI, use DS information DS/CEN/TR 13930 (recommendations for installing pipe systems) and 13932 (recommendations for installing pumps) as guidelines.
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Use shims between pump base plate and foundation to avoid tension in the pump foot when the installation is secured. Recommended design of pipes DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com...
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< 3 m/s at inlet side (note: v<1.5 m/s in manifolds splitting flow to several pumps in parallel) • v < 6 m/s at outlet side • Avoid impurities DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99...
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Allowable vibration levels on the pumps As standard, DESMI centrifugal pumps with electric motor generate less than 2.8 mm/s vibration velocity (measured in 3 directions at motor flange level on vertical pumps) during a factory test. The pump and electric motor industry generally agrees that vibration levels above 7 mm/s are damaging –...
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Hf = Pipeline loss at the inlet (m) Hv = Vapor pressure for actual liquid (m) Hs = Safety margin, at least 0.5 meter recommended Figure 5-1: Suction up height DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com www.desmi.com...
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Figure 5-2: Ventilation NOTE: If the admissible temperature is exceeded, additional measures must be taken. Maintenance intervals and maintenance measures may have to be adjusted accordingly. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com...
If re-greaseable then motor bearings to be greased acc. to motor manual before starting the pump! Any pump bearing(s) are fully greased from DESMI factory = do not re-grease any pump bearing(s) before scheduled running hours in re-grease table in Section 8 are obtained).
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DESMI priming unit has two types: priming pump and priming air ejector. Figure 6-1: Priming pump B114N Figure 6-2: Priming air ejector Please see manual for more details.
For safety reasons the pump is only allowed to operate against closed discharge valve for a short time (max. 2 minutes and at a max. temperature of 80 ° C for standard pumps). Otherwise there is DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby –...
1. Switch off the motor and make sure the pump set runs down smoothly to a standstill. 2. Close the shut-off element in the discharge line. 3. Close the shut-off element in the suction line. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf.
Do not use the pump to handle unauthorized fluids. Do not operate the pump against a closed shut-off element for long periods Without getting written approval from DESMI, do not operate the pump in incorrect condition (for example, temperature, pressures or speeds exceeding those specified in the order documentation or on the name plate).
RISK OF PROPERTY DAMAGE! Re-starting while motor is still running could damage the pump (set). Do not re-start the pump set before the pump motor is fully stopped. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com...
Too high temperature of the pump surface may cause explosion, which will cause damage to the pump, death or serious injury. Do not run pump below minimum flow. In case of doubt, contact DESMI. 6.7.2. Density of fluid handled The pump input power changes in proportion to the density of the fluid handled.
For returning the pump to service, observe the sections on commissioning / start-up and the operating limits. In addition, do all servicing / maintenance operations before returning the pump (set) to service. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf.
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Immediately after the work is complete, re-install and/or re-activate all safety-relevant and protective devices. NOTE: If the pump has been out of service for more than one year, replace all elastomer seals. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf.
4. Pump takes air system 5. Suction lift is too high or Check data sheet Q/H curve and insufficient NPSHA NPSH or contact DESMI 6. The magnetic coupling is Check the operation condition decoupled Check if the pump is blocked Insert orifice plate or check valve 1.
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This can eliminate or verify many of the possible failures and is the easiest and best way to begin troubleshooting. 2. If nothing can be concluded after point no. 1. pictures and description of the piping system DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf.
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3. If we cannot conclude possible root cause from information received under point 1. or 2. it might be necessary to send a service engineer to investigation and further troubleshooting. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf.
Excessive temperature as a result of bearings running hot or defective bearing seals will cause damage to the pump, death or serious injury. Regularly check the lubricant level. Regularly check the rolling-element bearings for running noises. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com www.desmi.com...
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Monitor the stand-by pump. To make sure that the stand-by pumps are ready for operation, start them up once a week. • Monitor the bearing temperature. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com...
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70 to 120% of BEP flow if allowed by NPSHa <> NPSHr, see note below) Unusual temperature increasing DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99...
Incorrect inlet pressure due to clogged filter in the suction line could damage the pump. Monitor contamination of filter with suitable instruments (for example, using differential pressure gauge). Clean the filter at appropriate intervals. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com...
3. Always flush and clean the pump before transporting it to the workshop. 4. Provide a certificate of decontamination for the pump. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com www.desmi.com...
For any work on the motor, observe the instructions of the relevant motor manufacturer. For dismantling and reassembly observe the exploded views and the general assembly drawing. In case of damage you can always contact our service staff. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf.
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If the pump has been pumping hot, toxic, corrosive or burning fluid, take great care that it is drained before it is removed from the piping system. NOTE: All maintenance, service and installation work can be carried out by DESMI or authorized workshops. Contact our sales staff to discuss your requirement.
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Correct lifting eye orientation Not allowed lifting eye orientation for lift of vertical motor for lift of vertical motor DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com...
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2. If a PT100 is installed, remove the PT100 before disassembling the motor bracket. 3. Loose the nuts (23/18*) and then remove the motor bracket (27/41*). DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com www.desmi.com...
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(07/14*) and washer (06/15*) and to remove the impeller (05/5*). 6. Loose the screws (25/46*) to remove the canister (19/34*). DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com...
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(10), slide bearing (14/27*) and thrust bearing stationary (13/26*). Note: The guide plate (10) is only available for models ESL25/32/40/50-180N/S18. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com www.desmi.com...
- Thrust bearing: should be free of cracks or heavy wear scratches, replace in case of wear and noise. - Check the rubber parts for elasticity. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com...
Material numbers with an asterisk are applicable to models ESL65-180M, ESL80-180N/S18. 10.2.1. Fitting sealing rings 1. When fitted, the sealing ring (04/4*) is to bear against the shoulder of the pump casing. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com...
NOTE: Tap the lock washer into the slot on the lock nut if the pump rotor can rotate freely. 10.2.6. Fitting canister 1. Mount the O-Ring (38/10*), assemble the canister (19/34*) and tighten the screws (25/46*) DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com...
3. Push the motor coupling (28/42*) towards the motor shaft shoulder, mount the thrust plate (33/55*) and then tighten the sunk Allen screw (34/56*) and point screw (31/44*) DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com www.desmi.com...
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The assembly requires forced guides if there is a risk of contact between the outer rotor and the canister. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf. nr.: +45 96 32 81 11 Fax +45 98 17 54 99 E-mail: desmi@desmi.com...
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NOTE: Two or four guide rods can be used to guide the assembly to avoid the outer magnet being pulled against the canister. DESMI Pumping Technology A/S Tagholm 1 9400 Nørresundby – Denmark Tlf.
When ordering spare parts please always state pump type, serial No. (appears on the name plate of the pump), position No. on the assembly drawing and designation on the spare parts list. Spare parts or Spare Parts Kit (SPK) can be ordered via spareparts@desmi.com Recommended spare parts stock for 2 years' operation to DIN 24296.
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