Related Manuals for Danfoss MCHE
Summary of Contents for Danfoss MCHE
- Page 1 Service guide User manual Installation, Operation and MicroChannel Heat Exchangers Maintenance Manual MCHE Installation and Maintenance Guide APP pumps (APP 21-43) ro-solutions.com www.danfoss.com...
- Page 2 Maintenance of MicroChannel Heat Exchangers (MCHE)........9...
- Page 3 Service guide | Application, Installation and Maintenance Manual MCHE Introduction General 1.2 General This guide is for installation and maintenance of Danfoss Microchannel Heat Exchangers (MCHEs). We recommend that you read this manual Indicates something to be noted by the carefully before commencing any work.
- Page 4 16 °C (60 °F) at time of bending, • Coating shall be protected from abrasion, Never lift a MCHE by the inlet and outlet tubes as gouges, and impact before and during the it might result in dimensional deviation or worse bending process, yet, the initiation of a crack that can later result in •...
- Page 5 Service guide | Application, Installation and Maintenance Manual MCHE Recommended bending radii Structural parameters Min. recommended bending R Material Tube Tube (Wmm*Hmm*Port#) (Hmm*Gage mm) C116 16*1.3*16 3102 Tube C120 20.6*1.3*20 8.1*0.08 C125 25.4*1.3*26 7.87 3003MOD C225 25.4*2.0*20 9.45 Table 1 During the bending operation, do not let one end of the coil become cantilevered off...
- Page 6 Sevice guide | Application, Installation and Maintenance Manual MCHE 3.3 Coil mounting against thermal expansion Thermal expansion of aluminum is higher than most other metals. Frequent thermally induced stress could shorten the life of the micro channel heat exchanger (Fig.4)
- Page 7 MCHE. Gaps should also be eliminated on the top, bottom and sides of the MCHE so that all fan induced air is directed over the coil surface. This can be accomplished with sealing strips as shown in Fig.
- Page 8 Fig. 10b Rubber support Leak repair Not recommends to repair MCHE refrigerant leak in the field. Danfoss recommends replacement of the MCHE in the event that a leak develops It due to a defect, mechanical damage or premature corrosion. AX292455807588en-000201 | 8...
- Page 9 Service guide | Application, Installation and Maintenance Manual MCHE Coating Coating of a heat exchanger could increase corrosion resistance in certain applications and/ or environmental conditions such as coastal or industrial areas, as well as situations with WARNINGS stagnant water or extreme wet conditions.
- Page 10 Service guide | Application, Installation and Maintenance Manual MCHE Highest pressure of cleaning equipment shall not Step 5: Install the dust screen back exceed 15 bar, and tentatively move the cleaning Install the dust screen back if the unit has this equipment from far to near to prevent damage.
- Page 11 Service guide | Application, Installation and Maintenance Manual MCHE Coolant Application Definition 7.1.1 Water: treated water without any chemical compound added. 7.1.2 Glycol Solution: Refers to commercially available glycol coolants that include inhibitors, pH buffers, and compounds for biological integrity. It is not a pure glycol solution.
- Page 12 It is important to note that these coolant requirements are not a guarantee against corrosion but should be considered as a tool to avoid the most critical issues. Danfoss MicroChannel Heat Exchangers (Jia Xing) Co., Ltd. No. 8, Sangdelan Road, Wuyuan Street, Haiyan, Zhejiang Province 314300 P.R.
Need help?
Do you have a question about the MCHE and is the answer not in the manual?
Questions and answers